16,877 results match your criteria Air quality atmosphere & health[Journal]


Seasonal variation characteristics of hydroxyl radical pollution and its potential formation mechanism during the daytime in Lanzhou.

J Environ Sci (China) 2020 Sep 16;95:58-64. Epub 2020 Apr 16.

Gansu Food Inspection and Research Institute, Lanzhou 730030, China.

Hydroxyl free radicals (OH radicals) play the main role in atmospheric chemistry and their involving reactions are the dominant rate determining step in the formation of secondary fine particulate matter and in the removal of air pollutants from the atmosphere. In this paper, we studied the seasonal variation characteristics of OH radicals during the daytime in Lanzhou and explored the potential formation mechanism of high concentration OH radicals. We found that the OH radicals in four seasons was 2. Read More

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http://dx.doi.org/10.1016/j.jes.2020.03.045DOI Listing
September 2020

Relationships between chemical elements of PM and O in Shanghai atmosphere based on the 1-year monitoring observation.

J Environ Sci (China) 2020 Sep 29;95:49-57. Epub 2020 Apr 29.

School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China. Electronic address:

Mass level of fine particles (PM) in main cities in China has decreased significantly in recent years due to implementation of Chinese Clean Air Action Plan since 2013, however, O pollution is getting worse than before, especially in megacities such as in Shanghai. In this work, O and PM were continuously monitored from May 27, 2018 to March 31, 2019. Our data showed that the annual average concentration of PM and O (O-8 hr, maximum 8-hour moving average of ozone days) was 39. Read More

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http://dx.doi.org/10.1016/j.jes.2020.03.043DOI Listing
September 2020

Studies on relationships between air pollutants and allergenicity of Humulus Scandens pollen collected from different areas of Shanghai.

J Environ Sci (China) 2020 Sep 30;95:43-48. Epub 2020 Apr 30.

School of Science and Engineering, Saitama University, Saitama 338-8570, Japan.

Pollen pollution and allergy are becoming prominent issues in China. However, few studies on pollinosis have been reported. As an allergen in the atmosphere, allergenic Humulus scandens pollen was collected from four districts of Shanghai, including Wusong (WS), Jiading (JD), Xujiahui (XJH) and Songjiang (SJ). Read More

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http://dx.doi.org/10.1016/j.jes.2020.03.037DOI Listing
September 2020

Reviews of emission of biogenic volatile organic compounds (BVOCs) in Asia.

J Environ Sci (China) 2020 Sep 13;95:266-277. Epub 2020 Jun 13.

Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.

Biogenic volatile organic compounds (BVOCs) in the atmosphere play important roles in the formation of ground-level ozone and secondary organic aerosol (SOA) in global scale and also in regional scale under some condition due to their large amount and relatively higher reactivity. In places with high plant cover in the tropics and in China where air pollution is serious, the effect of BVOCs on ozone and secondary organic aerosols is strong. The present research aims to provide a comprehensive review about the emission rate, emission inventory, research methods, the influencing factors of BVOCs emissions, as well as their impacts on atmospheric environment quality and human health in recent years in Asia based on the summary and analysis of literatures. Read More

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http://dx.doi.org/10.1016/j.jes.2020.04.043DOI Listing
September 2020

A review of atmospheric benzene homologues in China: Characterization, health risk assessment, source identification and countermeasures.

J Environ Sci (China) 2020 Sep 4;95:225-239. Epub 2020 May 4.

State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address:

Benzene homologues are important chemical precursors to the formation of ground-level ozone and secondary organic aerosol (SOA) in the atmosphere, in addition, some toxic species are harmful to human health. Strict countermeasures have been taken to fight air pollution since 2013, and total amount control of volatile organic compounds is being promoted in China at present. Therefore, it is important to understand the pollution situation and the control status of ambient benzene homologues in China. Read More

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http://dx.doi.org/10.1016/j.jes.2020.03.035DOI Listing
September 2020

Evaluating Organic Aerosol Sources and Evolution with a Combined Molecular Composition and Volatility Framework Using the Filter Inlet for Gases and Aerosols (FIGAERO).

Acc Chem Res 2020 Jul 10. Epub 2020 Jul 10.

Tofwerk, AG, Schorenstrasse 39, CH-3645 Thun, Switzerland.

ConspectusThe complex array of sources and transformations of organic carbonaceous material that comprises an important fraction of atmospheric fine particle mass, known as organic aerosol, has presented a long running challenge for accurate predictions of its abundance, distribution, and sensitivity to anthropogenic activities. Uncertainties about changes in atmospheric aerosol particle sources and abundance over time translate to uncertainties in their impact on Earth's climate and their response to changes in air quality policy. One limitation in our understanding of organic aerosol has been a lack of comprehensive measurements of its molecular composition and volatility, which can elucidate sources and processes affecting its abundance. Read More

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http://dx.doi.org/10.1021/acs.accounts.0c00259DOI Listing

The FLUXNET2015 dataset and the ONEFlux processing pipeline for eddy covariance data.

Authors:
Gilberto Pastorello Carlo Trotta Eleonora Canfora Housen Chu Danielle Christianson You-Wei Cheah Cristina Poindexter Jiquan Chen Abdelrahman Elbashandy Marty Humphrey Peter Isaac Diego Polidori Alessio Ribeca Catharine van Ingen Leiming Zhang Brian Amiro Christof Ammann M Altaf Arain Jonas Ardö Timothy Arkebauer Stefan K Arndt Nicola Arriga Marc Aubinet Mika Aurela Dennis Baldocchi Alan Barr Eric Beamesderfer Luca Belelli Marchesini Onil Bergeron Jason Beringer Christian Bernhofer Daniel Berveiller Dave Billesbach Thomas Andrew Black Peter D Blanken Gil Bohrer Julia Boike Paul V Bolstad Damien Bonal Jean-Marc Bonnefond David R Bowling Rosvel Bracho Jason Brodeur Christian Brümmer Nina Buchmann Benoit Burban Sean P Burns Pauline Buysse Peter Cale Mauro Cavagna Pierre Cellier Shiping Chen Isaac Chini Torben R Christensen James Cleverly Alessio Collalti Claudia Consalvo Bruce D Cook David Cook Carole Coursolle Edoardo Cremonese Peter S Curtis Ettore D'Andrea Humberto da Rocha Xiaoqin Dai Kenneth J Davis Bruno De Cinti Agnes de Grandcourt Anne De Ligne Raimundo C De Oliveira Nicolas Delpierre Ankur R Desai Carlos Marcelo Di Bella Paul di Tommasi Han Dolman Francisco Domingo Gang Dong Sabina Dore Pierpaolo Duce Eric Dufrêne Allison Dunn Jiří Dušek Derek Eamus Uwe Eichelmann Hatim Abdalla M ElKhidir Werner Eugster Cacilia M Ewenz Brent Ewers Daniela Famulari Silvano Fares Iris Feigenwinter Andrew Feitz Rasmus Fensholt Gianluca Filippa Marc Fischer John Frank Marta Galvagno Mana Gharun Damiano Gianelle Bert Gielen Beniamino Gioli Anatoly Gitelson Ignacio Goded Mathias Goeckede Allen H Goldstein Christopher M Gough Michael L Goulden Alexander Graf Anne Griebel Carsten Gruening Thomas Grünwald Albin Hammerle Shijie Han Xingguo Han Birger Ulf Hansen Chad Hanson Juha Hatakka Yongtao He Markus Hehn Bernard Heinesch Nina Hinko-Najera Lukas Hörtnagl Lindsay Hutley Andreas Ibrom Hiroki Ikawa Marcin Jackowicz-Korczynski Dalibor Janouš Wilma Jans Rachhpal Jassal Shicheng Jiang Tomomichi Kato Myroslava Khomik Janina Klatt Alexander Knohl Sara Knox Hideki Kobayashi Georgia Koerber Olaf Kolle Yoshiko Kosugi Ayumi Kotani Andrew Kowalski Bart Kruijt Julia Kurbatova Werner L Kutsch Hyojung Kwon Samuli Launiainen Tuomas Laurila Bev Law Ray Leuning Yingnian Li Michael Liddell Jean-Marc Limousin Marryanna Lion Adam J Liska Annalea Lohila Ana López-Ballesteros Efrén López-Blanco Benjamin Loubet Denis Loustau Antje Lucas-Moffat Johannes Lüers Siyan Ma Craig Macfarlane Vincenzo Magliulo Regine Maier Ivan Mammarella Giovanni Manca Barbara Marcolla Hank A Margolis Serena Marras William Massman Mikhail Mastepanov Roser Matamala Jaclyn Hatala Matthes Francesco Mazzenga Harry McCaughey Ian McHugh Andrew M S McMillan Lutz Merbold Wayne Meyer Tilden Meyers Scott D Miller Stefano Minerbi Uta Moderow Russell K Monson Leonardo Montagnani Caitlin E Moore Eddy Moors Virginie Moreaux Christine Moureaux J William Munger Taro Nakai Johan Neirynck Zoran Nesic Giacomo Nicolini Asko Noormets Matthew Northwood Marcelo Nosetto Yann Nouvellon Kimberly Novick Walter Oechel Jørgen Eivind Olesen Jean-Marc Ourcival Shirley A Papuga Frans-Jan Parmentier Eugenie Paul-Limoges Marian Pavelka Matthias Peichl Elise Pendall Richard P Phillips Kim Pilegaard Norbert Pirk Gabriela Posse Thomas Powell Heiko Prasse Suzanne M Prober Serge Rambal Üllar Rannik Naama Raz-Yaseef David Reed Victor Resco de Dios Natalia Restrepo-Coupe Borja R Reverter Marilyn Roland Simone Sabbatini Torsten Sachs Scott R Saleska Enrique P Sánchez-Cañete Zulia M Sanchez-Mejia Hans Peter Schmid Marius Schmidt Karl Schneider Frederik Schrader Ivan Schroder Russell L Scott Pavel Sedlák Penélope Serrano-Ortíz Changliang Shao Peili Shi Ivan Shironya Lukas Siebicke Ladislav Šigut Richard Silberstein Costantino Sirca Donatella Spano Rainer Steinbrecher Robert M Stevens Cove Sturtevant Andy Suyker Torbern Tagesson Satoru Takanashi Yanhong Tang Nigel Tapper Jonathan Thom Frank Tiedemann Michele Tomassucci Juha-Pekka Tuovinen Shawn Urbanski Riccardo Valentini Michiel van der Molen Eva van Gorsel Ko van Huissteden Andrej Varlagin Joseph Verfaillie Timo Vesala Caroline Vincke Domenico Vitale Natalia Vygodskaya Jeffrey P Walker Elizabeth Walter-Shea Huimin Wang Robin Weber Sebastian Westermann Christian Wille Steven Wofsy Georg Wohlfahrt Sebastian Wolf William Woodgate Yuelin Li Roberto Zampedri Junhui Zhang Guoyi Zhou Donatella Zona Deb Agarwal Sebastien Biraud Margaret Torn Dario Papale

Sci Data 2020 Jul 9;7(1):225. Epub 2020 Jul 9.

DIBAF, University of Tuscia, Viterbo, 01100, Italy.

The FLUXNET2015 dataset provides ecosystem-scale data on CO, water, and energy exchange between the biosphere and the atmosphere, and other meteorological and biological measurements, from 212 sites around the globe (over 1500 site-years, up to and including year 2014). These sites, independently managed and operated, voluntarily contributed their data to create global datasets. Data were quality controlled and processed using uniform methods, to improve consistency and intercomparability across sites. Read More

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http://dx.doi.org/10.1038/s41597-020-0534-3DOI Listing

Temporal variations in ambient air quality indicators in Shanghai municipality, China.

Sci Rep 2020 Jul 9;10(1):11350. Epub 2020 Jul 9.

Changjiang Water Resources Protection Institute, Wuhan, 430051, China.

Official data on daily PM, PM, SO, NO, CO, and maximum 8-h average O (O_8h) concentrations from January 2015 to December 2018 were evaluated and air pollution status and dynamics in Shanghai municipality were examined. Factors affecting air quality, including meteorological factors and socio-economic indicators, were analyzed. The main findings were that: (1) Overall air quality status in Shanghai municipality has improved and number of days meeting 'Chinese ambient air quality standards' (CAAQS) Grade II has increased. Read More

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http://dx.doi.org/10.1038/s41598-020-68201-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7347849PMC
July 2020
5.078 Impact Factor

Adsorption and catalytic oxidation of arsenite on Fe-Mn nodules in the presence of oxygen.

Chemosphere 2020 Jun 30;259:127503. Epub 2020 Jun 30.

Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Hubei Key Laboratory of Soil Environment and Pollution Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China. Electronic address:

Fe-Mn nodules affect the speciation, transformation and migration of arsenic (As) via redox and adsorption reactions. However, few studies have been concerned with their interaction in the presence of dissolved oxygen. In this work, the interaction mechanism of As(III) and Fe-Mn nodules was studied in different atmospheres. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127503DOI Listing

Enhanced stability in CHNHPbI hybrid perovskite from mechano-chemical synthesis: structural, microstructural and optoelectronic characterization.

Sci Rep 2020 Jul 8;10(1):11228. Epub 2020 Jul 8.

Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049, Madrid, Spain.

Among the hybrid organic-inorganic perovskites MAPbX (MA: methyl-ammonium CH-NH, X = halogen), the triiodide specimen (MAPbI) is still the material of choice for solar energy applications. Although it is able to absorb light above its 1.6 eV bandgap, its poor stability in humid air atmosphere has been a major drawback for its use in solar cells. Read More

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http://dx.doi.org/10.1038/s41598-020-68085-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7343856PMC

Incorporation of Remote PM Concentrations into the Downscaler Model for Spatially Fused Air Quality Surfaces.

Atmosphere (Basel) 2020 Jan;11(103)

Office of Air Quality Planning and Standards, Environmental Protection Agency, Research Triangle Park, NC 27711, USA.

The United States Environmental Protection Agency (EPA) has implemented a Bayesian spatial data fusion model called the Downscaler (DS) model to generate daily air quality surfaces for PM across the contiguous U.S. Previous implementations of DS relied on monitoring data from EPA's Air Quality System (AQS) network, which is largely concentrated in urban areas. Read More

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http://dx.doi.org/10.3390/atmos11010103DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7339729PMC
January 2020

Improving Road Traffic Forecasting Using Air Pollution and Atmospheric Data: Experiments Based on LSTM Recurrent Neural Networks.

Sensors (Basel) 2020 Jul 4;20(13). Epub 2020 Jul 4.

Telecom SudParis, Institut Polytechnique de Paris, CNRS UMR5157, 91000 Evry, France.

Traffic flow forecasting is one of the most important use cases related to smart cities. In addition to assisting traffic management authorities, traffic forecasting can help drivers to choose the best path to their destinations. Accurate traffic forecasting is a basic requirement for traffic management. Read More

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http://dx.doi.org/10.3390/s20133749DOI Listing

Plasma gasification performances of various raw and torrefied biomass materials using different gasifying agents.

Bioresour Technol 2020 Jun 27;314:123740. Epub 2020 Jun 27.

Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan; Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan.

Plasma gasification of raw and torrefied woody, non-woody, and algal biomass using three different gasifying agents (air, steam, and CO) is conducted through a thermodynamic analysis. The impacts of feedstock and reaction atmosphere on various performance indices such as syngas yield, pollutant emissions, plasma energy to syngas production ratio (PSR), and plasma gasification efficiency (PGE) are studied. Results show that CO plasma gasification gives the lowest PSR, thereby leading to the highest PGE among the three reaction atmospheres. Read More

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http://dx.doi.org/10.1016/j.biortech.2020.123740DOI Listing

Peat burning - An important source of pyridines in the earth atmosphere.

Environ Pollut 2020 Jun 29;266(Pt 1):115109. Epub 2020 Jun 29.

Laboratory of Environmental Analytical Chemistry, Core Facility Center "Arktika", Northern (Arctic) Federal University. Nab, Severnoy Dviny, 17, Arkhangelsk, 163002, Russia; Department of Organic Chemistry, Lomonosov Moscow State University, Moscow, 119991, Leninskie Gory 1/3, Russia. Electronic address:

Studies of the chemical composition of atmospheric aerosols, rain water and snow in various regions of the globe quite often show the presence of pyridine and a number of its low mass derivatives. Nevertheless, the sources of those compounds in the environment have not yet been established and definitely require elucidation, supported by reliable experimental results. In the present work the chemical composition of peat combustion products as one of the important sources of atmospheric aerosol emission is studied by two-dimensional gas chromatography - high-resolution mass spectrometry with a focus on the detection of pyridine derivatives. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.115109DOI Listing

Toxicity of particles emitted by fireworks.

Part Fibre Toxicol 2020 Jul 2;17(1):28. Epub 2020 Jul 2.

Department of Environmental Medicine, NYU School of Medicine, 341 East 25th St,, New York, NY, 10010, USA.

Background: Particle matter (PM) has been associated with increased morbidity and mortality rates across the world. This study was designed to test the hypotheses that pyrotechnic firework displays introduce significant amounts of toxic metals into the atmosphere and are hazardous to human health. Size-selective emissions from 10 different fireworks displays were collected during particle generation in a dynamic, stainless steel chamber and tested for toxicity in cells. Read More

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http://dx.doi.org/10.1186/s12989-020-00360-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7330945PMC

[Distribution Characteristics and Source Analysis of Atmospheric Mercury Speciation in Suzhou].

Huan Jing Ke Xue 2020 Jul;41(7):3102-3111

Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.

To explore the variation of mercury in the atmosphere in Suzhou, continuous monitoring of gaseous element mercury (GEM), gaseous oxidized mercury (GOM), and particulate bound mercury (PBM) was conducted from January 1 to December 31, 2018, in Suzhou. The weights trajectory analysis method (CWT) and concentration rose were used to analyze the atmospheric mercury sources and concentration variation. The results showed that during the monitoring period, the concentration ranges of GEM, GOM, and PBM in Suzhou were 0-53. Read More

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http://dx.doi.org/10.13227/j.hjkx.201910076DOI Listing

[Analysis of Transport Pathways and Potential Sources of Atmospheric Particulate Matter in Zigong, in South of Sichuan Province].

Huan Jing Ke Xue 2020 Jul;41(7):3021-3030

Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China.

Atmospheric particulate matter pollution in Zigong City in southern Sichuan is quite severe. The average concentrations of PM and PM from 2015 to 2018 were (95.42±9. Read More

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http://dx.doi.org/10.13227/j.hjkx.201911096DOI Listing

[Pollution Characteristics of Water-soluble Inorganic Ions in Chengdu in Summer and Winter].

Huan Jing Ke Xue 2020 Jul;41(7):3012-3020

Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.

The water-soluble inorganic ions (WSIIs) in PM and gaseous precursors of Chengdu were continuously observed by a gas and aerosol collector combined with ion chromatography (GAC-IC) in the summer and winter of 2017, and both their pollution characteristics and a typical pollution process in winter were analyzed. It was found that the concentration of PM in winter (100.2 μg·m) was significantly higher than that in summer (34. Read More

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http://dx.doi.org/10.13227/j.hjkx.202001061DOI Listing

[Characteristics and Sources of Microbial Aerosols in Urban and Mountainous Areas in Autumn and Winter in Xi'an, China].

Huan Jing Ke Xue 2020 May;41(5):2044-2049

School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China.

To explore the bioaerosol composition characteristics and sources in urban areas and mountains, three sample sites were selected in urban (urban, suburban) and southern mountainous areas in Xi'an, and air, soil, and leaf samples were simultaneously collected. The fungi and bacteria community structures at different sampling sites were analyzed through a high-throughput sequencing method, and their spatio-temporal variations were also examined. Moreover, a source track technique was used to identify the source of microorganisms in the air. Read More

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http://dx.doi.org/10.13227/j.hjkx.201911010DOI Listing

[Comparative Analysis of Pollution Characteristics of Carbonaceous Aerosol Components in the Atmosphere Between Urban and Suburban Areas].

Huan Jing Ke Xue 2020 May;41(5):2026-2035

College of Architecture and Environment, Sichuan University, Chengdu 610065, China.

To compare the pollution characteristics of carbonaceous aerosol components in the atmosphere between urban and suburban areas, Chengdu City and Renshou County were selected as study areas from which 88 samples of PM during haze and non-haze periods were collected and analyzed. Quantification of mass concentrations of PM, carbonaceous aerosol components[organic carbon (OC), elemental carbon (EC), and secondary organic carbon (SOC)], along with correlation analysis of OC and EC, and principal component analysis (PCA) of carbon components were carried out. The results show that pollutant concentrations during the haze period were higher than those during the non-haze period. Read More

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http://dx.doi.org/10.13227/j.hjkx.201909079DOI Listing

[Effect of Liquid Water Content of Particles and Acidity of Particulate Matter on the Formation of Secondary Inorganic Components in Xinjiang Petrochemical Industrial Area].

Huan Jing Ke Xue 2020 Jun;41(6):2536-2546

Dushanzi Environmental Scientific Research and Monitoring Station, Karamay 833699, China.

Secondary species are dominant components of PM in Dushanzi, Xinjiang. It is crucial to investigate the conversion process of secondary components in the atmosphere for regional air pollution control. The water-soluble components were analyzed for samples collected from Dushanzi District of Xinjiang from September 2015 to July 2016. Read More

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http://dx.doi.org/10.13227/j.hjkx.201910146DOI Listing

[Source Apportionment and Health Risk Assessment of Polycyclic Aromatic Hydrocarbons in PM in Changchun City, Autumn of 2017].

Huan Jing Ke Xue 2020 Feb;41(2):564-573

Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change(ILCEC), School of Applied Meteorology, Nanjing University of Information Science&Technology, Nanjing 210044, China.

In this study, 30 PM samples were collected from the atmosphere in Changchun City in the autumn of 2017. The concentration and composition characteristics of 17 polycyclic aromatic hydrocarbons (PAHs) in the samples were analyzed by gas chromatography mass spectrometry (GC-MS). The diagnostic ratio and principal component analysis method were used to determine the source of PAHs pollution. Read More

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http://dx.doi.org/10.13227/j.hjkx.201906043DOI Listing
February 2020

A theoretical investigation on the atmospheric degradation of the radical: reactions with NO, NO, and NO.

Environ Sci Process Impacts 2020 Jul 1. Epub 2020 Jul 1.

School of Chemistry and Chemical Engineering, Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, South Zhongguancun Street # 5, Haidian District, Beijing, 100081, P. R. China.

The radical is the key intermediate in the atmospheric oxidation of benzaldehyde, and its further chemistry contributes to local air pollution. The reaction mechanisms of the radical with NO, NO2, and NO3 were studied by quantum chemistry calculations at the CCSD(T)/CBS//M06-2X/def2-TZVP level of theory. The explicit potential energy curves were provided in order to reveal the atmospheric fate of the radical comprehensively. Read More

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http://dx.doi.org/10.1039/d0em00112kDOI Listing

Persistent ozone pollution episodes in North China exacerbated by regional transport.

Environ Pollut 2020 Jun 20;265(Pt A):115056. Epub 2020 Jun 20.

Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, Jiangsu, China.

Summertime ozone (O) concentrations over China continue to increase although the governmental Clear Air Actions have been carried out since 2013. The worst O pollution is confronted over North China Plain. Ozone polluted days (with observed regionally-averaged maximum daily 8-h average (MDA8) O concentrations exceeding 80 ppbv) in May-July in North China increased from 35 days in year 2014 to 56 days in year 2018, and persistent O pollution episodes that lasted for 5 days or longer (OPEs5) contributed 14. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.115056DOI Listing
June 2020
4.143 Impact Factor

COVID-19 lockdown effects on air quality by NO in the cities of Barcelona and Madrid (Spain).

Sci Total Environ 2020 Jun 20;741:140353. Epub 2020 Jun 20.

Technical University of Catalonia (UPC), Barcelona Supercomputing Center (BSC), Edificio Nexus II, c/Jordi Girona 29, E-08034 Barcelona, Spain. Electronic address:

During the months of March and April 2020 we witnessed the largest-scale experiment in history in terms of air quality in cities. Any prediction of this experiment's results may be obvious to science, as it was totally expected, the air quality has improved substantially. Simply stated, it comes as no surprise. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.140353DOI Listing

Climate change, air pollution, and allergic respiratory diseases: a call to action for health professionals.

Chin Med J (Engl) 2020 Jun 24. Epub 2020 Jun 24.

School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.

Rising emissions of greenhouse gases in the atmosphere have warmed the planet substantially and are also accompanied by poor air quality. The increased prevalence of allergic airway disease worldwide can be partially attributed to those global environmental changes. Climate change and air pollution pose adverse impacts on respiratory allergies, and that the mechanisms are complex and interactive. Read More

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http://dx.doi.org/10.1097/CM9.0000000000000861DOI Listing

Molecular characteristics of organic compositions in fresh and aged biomass burning aerosols.

Sci Total Environ 2020 Jun 16;741:140247. Epub 2020 Jun 16.

Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.

Biomass burning (BB) is the most important source of primary organic aerosols (OA) in the atmosphere that has significant impact on local/regional air quality and human health. However, few studies paid attention to the evolution of molecular characteristics of BB OA in the atmospheric aging processes. In this study, both fresh and aged PM aerosols from burning of rice, maize, and wheat straws were collected from a combined system of combustion chamber and oxidation flow reactor, and were analyzed for >100 organic species. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.140247DOI Listing
June 2020
4.099 Impact Factor

Appropriate scenarios for mercury emission control from coal-fired power plant in Thailand: emissions and ambient concentrations analysis.

Heliyon 2020 Jun 12;6(6):e04197. Epub 2020 Jun 12.

Department of Sanitary Engineering, Faculty of Public Health, Mahidol University, Bangkok, 10400, Thailand.

Optimum control of mercury released from the coal-fired power plant is evaluated by determining its efficiency and appropriateness in reducing emissions and ambient air concentrations. The 2400 MW power plant fueled by lignite located in Thailand is demonstrated in this study. Emissions of mercury from the coal-fired power plant are calculated under 3 major scenarios. Read More

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http://dx.doi.org/10.1016/j.heliyon.2020.e04197DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7300093PMC

Indirect impact of COVID-19 on environment: A brief study in Indian context.

Environ Res 2020 Jun 18;188:109807. Epub 2020 Jun 18.

Department of Environmental Science & Technology, Shroff S.R. Rotary Institute of Chemical Technology, Ankleshwar, Gujarat, 393135, India.

Worldwide spread of COVID-19 in a quite short time has brought a dramatic decrease in industrial activities, road traffic and tourism. Restricted human interaction with nature during this crisis time has appeared as a blessing for nature and environment. Reports from all over the world are indicating that after the outbreak of COVID-19, environmental conditions including air quality and water quality in rivers are improving and wildlife is blooming. Read More

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http://dx.doi.org/10.1016/j.envres.2020.109807DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7299871PMC

Satellite evidence for changes in the NO weekly cycle over large cities.

Sci Rep 2020 Jun 22;10(1):10066. Epub 2020 Jun 22.

Royal Netherlands Meteorological Institute, Satellite Observations, De Bilt, The Netherlands.

Anthropogenic activities, by far the largest source of NOx into the atmosphere, induce a weekly cycle of NO abundances in cities. Comprehensive analysis of the 2005-2017 OMI NO dataset reveals significant weekly cycles in 115 of the 274 cities considered. These results are corroborated by a full year of high-resolution TROPOMI NO observations. Read More

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http://dx.doi.org/10.1038/s41598-020-66891-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7308373PMC

Effect of potential HONO sources on peroxyacetyl nitrate (PAN) formation in eastern China in winter.

J Environ Sci (China) 2020 Aug 4;94:81-87. Epub 2020 May 4.

State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China; College of Earth Science, University of Chinese Academy of Sciences, Beijing 100049, China; Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Electronic address:

As an important secondary photochemical pollutant, peroxyacetyl nitrate (PAN) has been studied over decades, yet its simulations usually underestimate the corresponding observations, especially in polluted areas. Recent observations in north China found unusually high concentrations of PAN during wintertime heavy haze events, but the current model still cannot reproduce the observations, and researchers speculated that nitrous acid (HONO) played a key role in PAN formation. For the first time we systematically assessed the impact of potential HONO sources on PAN formation mechanisms in eastern China using the Weather Research and Forecasting/Chemistry (WRF-Chem) model in February of 2017. Read More

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http://dx.doi.org/10.1016/j.jes.2020.03.039DOI Listing

Recent advances in catalytic decomposition of ozone.

J Environ Sci (China) 2020 Aug 17;94:14-31. Epub 2020 Apr 17.

State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Ozone (O), as a harmful air pollutant, has been of wide concern. Safe, efficient, and economical O removal methods urgently need to be developed. Catalytic decomposition is the most promising method for O removal, especially at room temperature or even subzero temperatures. Read More

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http://dx.doi.org/10.1016/j.jes.2020.03.058DOI Listing

Ambient Air Pollution Increases the Risk of Cerebrovascular and Neuropsychiatric Disorders through Induction of Inflammation and Oxidative Stress.

Int J Mol Sci 2020 Jun 17;21(12). Epub 2020 Jun 17.

Center for Cardiology-Cardiology I, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany.

Exposure to ambient air pollution is a well-established determinant of health and disease. The Lancet Commission on pollution and health concludes that air pollution is the leading environmental cause of global disease and premature death. Indeed, there is a growing body of evidence that links air pollution not only to adverse cardiorespiratory effects but also to increased risk of cerebrovascular and neuropsychiatric disorders. Read More

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http://dx.doi.org/10.3390/ijms21124306DOI Listing

Assessing the PM impact of biomass combustion in megacity Dhaka, Bangladesh.

Environ Pollut 2020 Sep 13;264:114798. Epub 2020 May 13.

Department of Environmental Medicine, New York University School of Medicine, New York, NY, USA.

In Dhaka, Bangladesh, fine particulate matter (PM) air pollution shows strong seasonal trends, with significantly higher mean concentrations during winter than during the monsoon (winter = 178.1 μg/m vs. monsoon = 30. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.114798DOI Listing
September 2020

Inter-annual and seasonal variations in columnar aerosol characteristics and radiative effects over the Pokhara Valley in the Himalayan foothills - Composition, radiative forcing, and atmospheric heating.

Environ Pollut 2020 Sep 12;264:114799. Epub 2020 May 12.

Institute for Advanced Sustainability Studies, Potsdam, Germany. Electronic address:

This study reports comprehensive analysis of seasonal and inter-annual variations of aerosol properties (optical, physical and chemical) and radiative effects over Pokhara Valley in the foothills of central Himalayas in Nepal utilizing the high-quality multi-year columnar aerosol data observed recently from January 2010 to December 2017. This paper focusses on the seasonal and inter-annual variations of chemical (composition), and absorption properties of aerosols and their radiative effects. The single scattering albedo (SSA) either decreases as a function of wavelength or remains independent of wavelength. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.114799DOI Listing
September 2020

Evaluating in-use vehicle emissions using air quality monitoring stations and on-road remote sensing systems.

Sci Total Environ 2020 Jun 13;740:139868. Epub 2020 Jun 13.

Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia; School of Information, Systems and Modelling, University of Technology Sydney, NSW 2007, Australia.

This study investigated real world in-use vehicle emissions using two regulatory techniques simultaneously, namely on-road remote sensing (RS) systems and air quality (AQ) monitoring stations, aiming to provide a full pollution profile from tailpipe to roadside and atmosphere. Two large AQ and RS datasets collected during 2012-2018 were analyzed. The effects of various emission control programmes on the trends of tailpipe emissions and air quality were evaluated. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139868DOI Listing

Modelling air quality levels of regulated metals: limitations and challenges.

Environ Sci Pollut Res Int 2020 Jun 15. Epub 2020 Jun 15.

Department of Environment and Planning & CESAM, University of Aveiro, Aveiro, Portugal.

Toxic metals as arsenic (As), cadmium (Cd), nickel (Ni), and lead (Pb) exist in the atmosphere as particulate matter components. Their concentration levels in the European Union (EU) are regulated by European legislation, which sets target and limit values as annual means, and by the World Health Organization (WHO) that defines guidelines and reference values for those metal elements. Modelling tools are recommended to support air quality assessment regarding the toxic metals; however, few studies have been performed and those assessments rely on discrete measurements or field campaigns. Read More

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http://dx.doi.org/10.1007/s11356-020-09645-9DOI Listing

Elevated atmospheric humidity prolongs active growth period and increases leaf nitrogen resorption efficiency of silver birch.

Oecologia 2020 Jun 17;193(2):449-460. Epub 2020 Jun 17.

Institute of Ecology and Earth Sciences, University of Tartu, Lai 40, 51005, Tartu, Estonia.

Climate models predict increasing amounts of precipitation and relative atmospheric humidity for high latitudes in the Northern Hemisphere. Therefore, tree species must adjust to the new climatic conditions. We studied young silver birches (Betula pendula Roth) in a long-term (2012-2018) free air humidity manipulation experiment, with the aim of clarifying the acclimation mechanisms to elevated relative atmospheric humidity. Read More

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http://dx.doi.org/10.1007/s00442-020-04688-8DOI Listing

Evaluation of quality parameters and shelf life of fresh cheese packed under modified atmosphere.

J Food Sci Technol 2020 Jul 3;57(7):2722-2731. Epub 2020 Mar 3.

Laboratory for Technology of Milk and Milk Products, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia.

Fresh (acid coagulated) cheeses belong to a group of soft unripen cheeses which are very popular among consumers. However, owing to the specific composition and properties, these cheeses have a limited shelf life. The aim of this study was to investigate the effect of modified atmosphere packaging (MAP) onto fresh cheese and to compare it with the commonly used packaging under atmospheric air and vacuum. Read More

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http://dx.doi.org/10.1007/s13197-020-04308-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7270376PMC

Atmospheric organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in the Antarctic marginal seas: Distribution, sources and transportation.

Chemosphere 2020 Jun 9;258:127359. Epub 2020 Jun 9.

Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, PR China. Electronic address:

From November 2013 to March 2014, air samples were collected in the Antarctic marginal seas during the 30th Chinese Antarctic research expedition. Organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) were analyzed in these samples. The mean concentrations were observed for hexachlorobenzene (HCB) >ΣPCBs >Σhexachlorocyclohexanes(HCHs) >Σdichlorodiphenyltrichloroethane(DDTs)>Σchlordanes. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127359DOI Listing

Portable dehumidifiers as an original matrix for the study of inhalable nanoparticles in school.

Chemosphere 2020 Jun 6:127295. Epub 2020 Jun 6.

Chemical Engineering Department, Federal University of Santa Maria - UFSM, 1000, Roraima Avenue, 97105-900, Santa Maria, RS, Brazil.

Good air quality is documented as a significant factor of social justice. The human health hazards associated with air pollution are not distributed equally across cities; the most vulnerable people are more exposed to ambient air as they commute to work and wait for buses or trains at the stations. Aerosols play important roles in atmosphere quality and the climate; their oxidation at the nanoscale level may possibly increase the reactivity and toxicity of atmospheric particulates. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127295DOI Listing

Distribution, sources, risks, and vitro DNA oxidative damage of PM-bound atmospheric polycyclic aromatic hydrocarbons in Urumqi, NW China.

Sci Total Environ 2020 May 27;739:139518. Epub 2020 May 27.

College of Chemistry and Chemical Engineer, Xinjiang University, Urumqi 830046, China.

Research has focused on the impacts of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere due to their potential carcinogenicity. In this study, we investigated the seasonal variation, sources, incremental lifetime cancer risks (ILCR), and vitro DNA oxidative damage of PAHs in Urumqi in NW China. A total of 72 atmospheric samples from Urumqi were collected over a year (September 2017-September 2018) and were analyzed for 16 PAHs that are specifically prioritized by the U. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139518DOI Listing

Feasibility Study on Measuring the Particulate Matter Level in the Atmosphere by Means of Yagi-Uda-Like Antennas.

Sensors (Basel) 2020 Jun 5;20(11). Epub 2020 Jun 5.

CRETUS Institute, Department of Applied Physics, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain.

In this work, the application of a technique for monitoring changes of the dielectric constant of the atmosphere caused by the presence of pollution is discussed. The method is based on changes in the reflection coefficient of the device induced by these dielectric constant variations of the surrounding medium. To that end, several Yagi-Uda-like antenna designs with different size limitations were simulated by using a Method-of-Moments software and optimized by means of a simulated annealing strategy. Read More

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http://dx.doi.org/10.3390/s20113225DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7308824PMC

Spider-Web-Inspired PM Filters Based on Self-Sustained Electrostatic Nanostructured Networks.

Adv Mater 2020 Jun 8:e2002361. Epub 2020 Jun 8.

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China.

Particulate matter (PM) pollution has become a serious public health issue, especially with outbreaks of emerging infectious diseases. However, most present filters are bulky, opaque, and show low-efficiency PM /pathogen interception and inevitable trade-off between PM removal and air permeability. Here, a unique electrospraying-netting technique is used to create spider-web-inspired network generator (SWING) air filters. Read More

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http://dx.doi.org/10.1002/adma.202002361DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7300536PMC

Occurrence and sources of polycyclic aromatic hydrocarbons in atmosphere and soil from 2013 to 2019 in the Fildes Peninsula, Antarctica.

Mar Pollut Bull 2020 Jul 15;156:111173. Epub 2020 May 15.

National Marine Environmental Monitoring Center, Dalian 116023, China.

Long-term monitoring is essential for revealing pollution trends, but relevant studies in the Antarctic remain limited. In this study, a seven-year continuous monitoring of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere and soil was carried out at the Fildes Peninsula, Antarctica. Average concentrations of ΣPAHs were 7134. Read More

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http://dx.doi.org/10.1016/j.marpolbul.2020.111173DOI Listing

Drivers of seasonal and annual air pollution exposure in a complex urban environment with multiple source contributions.

Environ Monit Assess 2020 Jun 5;192(7):415. Epub 2020 Jun 5.

Department of Civil & Mineral Engineering, University of Toronto, Toronto, ON, Canada.

Outdoor air pollution is a global health concern, but detailed exposure information is still limited for many parts of the world. In this study, high-resolution exposure surfaces were generated for annual and seasonal fine particulate matter (PM), coarse particulate matter (PM), and carbon monoxide (CO) for the Greater Beirut Area (GBA), Lebanon, an urban zone with a complex topography and multiple source contributions. Land use regression models (LUR) were calibrated and validated with monthly data collected from 58 locations between March 2017 and March 2018. Read More

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http://dx.doi.org/10.1007/s10661-020-08345-8DOI Listing

Columnar aerosol properties and radiative effects over Dushanbe, Tajikistan in Central Asia.

Environ Pollut 2020 May 25;265(Pt B):114872. Epub 2020 May 25.

State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, 100101, China. Electronic address:

This paper presents the results of the study on columnar aerosol optical and physical properties and radiative effects directly observed over Dushanbe, the capital city of Tajikistan, a NASA AERONET site (equipped with a CIMEL sunphotometer) in Central Asia. The average aerosol optical depth (AOD) and Ångström exponent (AE) during the observation period from July 2010 to April 2018 were found to be 0.28 ± 0. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.114872DOI Listing
May 2020
4.143 Impact Factor

Isotopic Interpretation of Particulate Nitrate in the Metropolitan City of Karachi, Pakistan: Insight into the Oceanic Contribution to NO.

Environ Sci Technol 2020 Jul 18;54(13):7787-7797. Epub 2020 Jun 18.

State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.

Nitrogen oxide (NO) abatement has become the focus of air quality management strategies. In this study, we examined NO sources and the atmospheric conversion of NO in Karachi, Pakistan, a megacity in South Asia with serious particulate pollution problems. Oceanic contributions to NO were quantified for the first time based on a novel approach using nitrogen/oxygen isotopic analysis in nitrate (δN-NO; δO-NO) and a Bayesian model. Read More

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http://dx.doi.org/10.1021/acs.est.0c00490DOI Listing
July 2020
5.330 Impact Factor

In vitro genomic damage induced by urban fine particulate matter on human lymphocytes.

Sci Rep 2020 Jun 1;10(1):8853. Epub 2020 Jun 1.

University of Turin, Department of Public Health and Pediatrics, Torino, Italy.

Urban air pollution represents a global problem, since everyday many mutagenic and carcinogens compounds are emitted into the atmosphere, with consequent adverse health effects on humans and biota. Specifically, particulate matter air pollution was associated with increased risks in human mortality and morbidity. In this paper, we analyse the genomic effects on human lymphocytes of different concentrations of annual Turin PM2. Read More

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http://dx.doi.org/10.1038/s41598-020-65785-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7264132PMC

Construction of a virtual PM observation network in China based on high-density surface meteorological observations using the Extreme Gradient Boosting model.

Environ Int 2020 Aug 29;141:105801. Epub 2020 May 29.

State Key Laboratory of Severe Weather (LASW) and Key Laboratory of Atmospheric Chemistry (LAC), Chinese Academy of Meteorological Sciences, CMA, Beijing 100081, China.

With increasing public concerns on air pollution in China, there is a demand for long-term continuous PM datasets. However, it was not until the end of 2012 that China established a national PM observation network. Before that, satellite-retrieved aerosol optical depth (AOD) was frequently used as a primary predictor to estimate surface PM. Read More

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http://dx.doi.org/10.1016/j.envint.2020.105801DOI Listing
August 2020
5.559 Impact Factor