71,159 results match your criteria Atmospheric Science Letters[Journal]


High mercury levels in Antarctic toothfish Dissostichus mawsoni from the Southwest Pacific sector of the Southern Ocean.

Environ Res 2020 May 16;187:109680. Epub 2020 May 16.

University of Coimbra, MARE - Marine and Environmental Sciences Centre, Department of Life Sciences, 3000-456, Coimbra, Portugal; British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, CB3 0ET, Cambridge, UK.

Mercury is a bioaccumulating toxic pollutant which can reach humans through the consumption of contaminated food (e.g. marine fish). Read More

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http://dx.doi.org/10.1016/j.envres.2020.109680DOI Listing

Specific sources of health risks caused by size-resolved PM-bound metals in a typical coal-burning city of northern China during the winter haze event.

Sci Total Environ 2020 Apr 27;734:138651. Epub 2020 Apr 27.

Yale-NUIST Center on Atmospheric Environment, School of Applied Meteorology, International Joint Laboratory on Climate and Environment Change, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, 210044, China.

High particulate matter (PM) pollution frequently occurs in winter over northern China , resulting in threats to human health. To date, there are limited studies to link source apportionments and health risk assessments in the different size-resolved PM samples during high PM events. In this study, size-segregated PM samples were collected in Linfen, a typical coal-burning city, in northern China during a wintertime haze pollution. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.138651DOI Listing

PAHs in Chinese atmosphere Part II: Health risk assessment.

Ecotoxicol Environ Saf 2020 May 24;200:110774. Epub 2020 May 24.

International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China; IJRC-PTS, Dalian Maritime University, Dalian, 116026, China. Electronic address:

Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous pollutants in atmosphere, which attracted more attentions due to their influence on human health. In this study, a national scale cancer risk (CR) assessment with atmospheric PAHs were conducted based on one year monitoring program at 11 cities across China. The annual mean concentrations of benzo[a]pyrene (BaP) and BaP equivalency (BaP) were 4. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2020.110774DOI Listing

A chronological model for the Late Paleolithic at Shuidonggou Locality 2, North China.

PLoS One 2020 27;15(5):e0232682. Epub 2020 May 27.

Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China.

The site of Shuidonggou Locality 2 offers important evidence for the Late Paleolithic sequence of north China. The site not only contains one of the earliest instances of ornamental freshwater shell and ostrich eggshell beads in the region, but also stone artifacts with features arguably resembling the Initial Upper Paleolithic (IUP) blade technology found farther north. The appearance of these innovative archaeological forms have been attributed to the arrival of hominin populations, possibly modern humans, into the region during Marine Isotope Stage 3. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0232682PLOS

Three-dimensional printing in radiation oncology: A systematic review of the literature.

J Appl Clin Med Phys 2020 May 27. Epub 2020 May 27.

Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL, USA.

Purpose/objectives: Three-dimensional (3D) printing is recognized as an effective clinical and educational tool in procedurally intensive specialties. However, it has a nascent role in radiation oncology. The goal of this investigation is to clarify the extent to which 3D printing applications are currently being used in radiation oncology through a systematic review of the literature. Read More

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http://dx.doi.org/10.1002/acm2.12907DOI Listing

Measurements of the radioactivity of the cloud from the accident at Windscale Works (Sellafield, England) in October 1957: data submitted to the International Geophysical Year (IGY; July 1957-December 1958).

J Radiol Prot 2020 May 27;40(2):633-645. Epub 2020 May 27.

Formerly of the Health Physics Division, United Kingdom Atomic Energy Authority (UKAEA) Research Group, Atomic Energy Research Establishment, Harwell, Berkshire, United Kingdom.

A fire in a nuclear reactor at Windscale Works (Sellafield, England) in October 1957 led to an uncontrolled aerial release of radionuclides. At the time of the accident air was sampled at various locations in Europe to monitor atmospheric pollution, and the opportunity was taken to measure the sampling filters for activity concentrations of iodine-131, caesium-137 and polonium-210 at the Harwell research establishment (United Kingdom); when it was not possible to perform measurements at Harwell, original measurement data were supplied. This programme of activity measurements was performed in the context of work by the Advisory Committee on Nuclear Radiation of the International Geophysical Year (IGY; July 1957-December 1958). Read More

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http://dx.doi.org/10.1088/1361-6498/ab70ccDOI Listing

Evidence of Air Dispersion: HFPO-DA and PFOA in Ohio and West Virginia Surface Water and Soil near a Fluoropolymer Production Facility.

Environ Sci Technol 2020 May 27. Epub 2020 May 27.

Environmental Science Graduate Program, The Ohio State University, Columbus, Ohio 43210, United States.

Perfluorooctanoic acid (PFOA) was used as a fluoropolymer manufacturing aid at a fluoropolymer production facility in Parkersburg, WV from 1951 to 2013. The manufacturer introduced a replacement surfactant hexafluoropropylene oxide dimer acid (HFPO-DA) that has been in use at this site since 2013. Historical releases of PFOA and related epidemiological work in this area has been primarily focused on communities downstream. Read More

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http://dx.doi.org/10.1021/acs.est.9b07384DOI Listing

Wildfires lead to decreased carbon and increased nitrogen concentrations in upland arctic streams.

Sci Rep 2020 May 26;10(1):8722. Epub 2020 May 26.

Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH, USA.

The Central Siberian Plateau is undergoing rapid climate change that has resulted in increased frequency of forest fires and subsequent alteration of watershed carbon and nutrient dynamics. Across a watershed chronosequence (3 to >100 years since wildfire) we quantified the effects of fire on quantity and composition of dissolved organic matter (DOM), stream water nutrient concentrations, as well as in-stream nutrient uptake. Wildfires increased concentrations of nitrate for a decade, while decreasing concentrations of dissolved organic carbon and nitrogen (DOC and DON) and aliphatic DOM contribution for five decades. Read More

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http://dx.doi.org/10.1038/s41598-020-65520-0DOI Listing

New capabilities of Sentinel-2A/B satellites combined with in situ data for monitoring small harmful algal blooms in complex coastal waters.

Sci Rep 2020 May 26;10(1):8743. Epub 2020 May 26.

Instituto de Ciencias Marinas de Andalucía (ICMAN), Consejo Superior de Investigaciones Científicas (CSIC), Avenida República Saharaui, 11519, Puerto Real, Spain.

The increased frequency of harmful algal blooms (HABs) is a major environmental concern worldwide, resulting not only in increased treatment costs for drinking water but also in impacts on tourism, commercial fishing and aquaculture and risks to human and animal health. Traditional strategies with ship-based approaches based on field sampling and laboratory analysis have been adopted to assess HABs. However, these methods are labour intensive and costly and do not provide synoptic views of the bloom conditions. Read More

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http://dx.doi.org/10.1038/s41598-020-65600-1DOI Listing

Normal Cyclic Variation in CO Concentration in Indoor Chambers Decreases Leaf Gas Exchange and Plant Growth.

Authors:
James Bunce

Plants (Basel) 2020 May 23;9(5). Epub 2020 May 23.

Adaptive Cropping Systems Laboratory, USDA-ARS, Beltsville, MD 20705-2350, USA.

Attempts to identify crop genetic material with larger growth stimulation at projected elevated atmospheric CO concentrations are becoming more common. The probability of reductions in photosynthesis and yield caused by short-term variation in CO concentration within elevated CO treatments in the free-air CO enrichment plots raises the question of whether similar effects occur in glasshouse or indoor chamber experiments. These experiments were designed to test whether even the normal, modest, cyclic variation in CO concentration typical of indoor exposure systems have persistent impacts on photosynthesis and growth, and to explore mechanisms underlying the responses observed. Read More

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http://dx.doi.org/10.3390/plants9050663DOI Listing

Complementary SEM-AFM of Swelling Bi-Fe-O Film on HOPG Substrate.

Materials (Basel) 2020 May 23;13(10). Epub 2020 May 23.

Central European Institute of Technology BUT, Purkyňova 123, 612 00 Brno, Czech Republic.

The objective of this work is to study the delamination of bismuth ferrite prepared by atomic layer deposition on highly oriented pyrolytic graphite (HOPG) substrate. The samples' structures and compositions are provided by XPS, secondary ion mass spectrometry (SIMS) and Raman spectroscopy. The resulting films demonstrate buckling and delamination from the substrates. Read More

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http://dx.doi.org/10.3390/ma13102402DOI Listing

Brain Control Reproduction by the Endocrine System of Female Blue Gourami (Trichogaster trichopterus).

Authors:
Gad Degani

Biology (Basel) 2020 May 21;9(5). Epub 2020 May 21.

MIGAL-Galilee Research Institute, POB 831, Kiryat Shmona 1101602, Israel.

Blue gourami belongs to the Labyrinithici fish and the Anabantiform order. It is characterized by a specific organ located above its gills for the respiration of atmospheric oxygen. This specific adaptation to low oxygen levels affects reproduction that is controlled by the brain, which integrates different effects on reproduction mainly through two axes-the gonadotropic brain pituitary gonad axis (BPG) and the hypothalamic-pituitary-somatotropic axis (HPS axis), including the interactions between them. Read More

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http://dx.doi.org/10.3390/biology9050109DOI Listing

Evolution of SO and NOx Emissions from Several Large Combustion Plants in Europe during 2005-2015.

Int J Environ Res Public Health 2020 May 21;17(10). Epub 2020 May 21.

Faculty of Sciences and Environment, European Centre of Excellence for the Environment, "Dunarea de Jos" University of Galati, Domneasca Street, no. 111, 800201 Galati, Romania.

The aim of this paper is to investigate the evolution of SO and NOx emissions of ten very large combustion plants (LCPs >500 MW) located in the European Union (EU) during 2005-2015. The evolution of NOx and SO emissions were analyzed against the EU Directives in force during 2005-2015. The investigation was performed using space-borne observations and estimated emissions collected from the EEA (European Environment Agency) inventory of air pollutant emissions. Read More

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http://dx.doi.org/10.3390/ijerph17103630DOI Listing

Microbial Consortiums of Hydrogenotrophic Methanogenic Mixed Cultures in Lab-Scale Biogas Upgrading Systems under Different Conditions of Temperature, pH and CO.

Microorganisms 2020 May 21;8(5). Epub 2020 May 21.

The Yangtze River Water Environment Key Laboratory of the Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.

In this study, hydrogenotrophic methanogenic mixed cultures taken from 13 lab-scale biogas upgrading systems under different temperature (20-70 °C), pH (6.0-8.5), and CO (0-10%, /) variables were systematically investigated. Read More

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http://dx.doi.org/10.3390/microorganisms8050772DOI Listing

CeO-Supported Pt Catalysts Derived from MOFs by Two Pyrolysis Strategies to Improve the Oxygen Activation Ability.

Nanomaterials (Basel) 2020 May 21;10(5). Epub 2020 May 21.

School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.

Functional metal organic framework (MOF) derivatives have attracted tremendous attention as promising catalysts for various reactions. The thermal decomposition strategies have a vital effect on the structures and physicochemical properties of functional MOF derivatives. Nevertheless, what effect does the pyrolysis strategy have on MOF derivatives need further study. Read More

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http://dx.doi.org/10.3390/nano10050983DOI Listing

Narrowband Polaritonic Thermal Emitters Driven by Waste Heat.

ACS Omega 2020 May 5;5(19):10900-10908. Epub 2020 May 5.

Department of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States.

There are a broad range of applications for narrowband long-wave infrared (LWIR) sources, especially within the 8-12 μm atmospheric window. These include infrared beacons, free-space communications, spectroscopy, and potentially on-chip photonics. Unfortunately, commercial light-emitting diode (LED) sources are not available within the LWIR, leaving only gas-phase and quantum cascade lasers, which exhibit low wall-plug efficiencies and in many cases require large footprints, precluding their use for many applications. Read More

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http://dx.doi.org/10.1021/acsomega.0c00600DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241014PMC

Comparison of Transcriptomics Changes Induced by TCS and MTCS Exposure in Human Hepatoma HepG2 Cells.

ACS Omega 2020 May 6;5(19):10715-10724. Epub 2020 May 6.

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

Triclosan (TCS) has been a widely used antibacterial agent in medical and personal care products in the last few decades. Methyl TCS (MTCS) is the major biotransformation product of TCS through replacement of the hydroxyl group with methoxy. Previous studies revealed that MTCS showed reduced toxicity but enhanced environmental persistence, when compared with TCS. Read More

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http://dx.doi.org/10.1021/acsomega.0c00075DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240827PMC

ZNRD1 and Its Antisense Long Noncoding RNA ZNRD1-AS1 Are Oppositely Regulated by Cold Atmospheric Plasma in Breast Cancer Cells.

Oxid Med Cell Longev 2020 5;2020:9490567. Epub 2020 May 5.

Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea.

Cold atmospheric plasma (CAP) has been recognized as a potential alternative or supplementary cancer treatment tool, which is attributed by its selective antiproliferation effect on cancer cells over normal cells. Standardization of the CAP treatment in terms of biological outputs such as cell growth inhibition and gene expression change is essential for its clinical application. This study aims at identifying genes that show consistent expression profiles at a specific CAP condition, which could be used to monitor whether CAP is an appropriate treatment to biological targets. Read More

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http://dx.doi.org/10.1155/2020/9490567DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7225860PMC

Exposure to Air Pollution Exacerbates Inflammation in Rats with Preexisting COPD.

Mediators Inflamm 2020 8;2020:4260204. Epub 2020 May 8.

Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou 450046, China.

Particulate matter with an aerodynamic diameter equal or less than 2.5 micrometers (PM2.5) is associated with the development of chronic obstructive pulmonary disease (COPD). Read More

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http://dx.doi.org/10.1155/2020/4260204DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7231193PMC

Spatiotemporal vanadium distribution in soils with microbial community dynamics at vanadium smelting site.

Environ Pollut 2020 May 10;265(Pt A):114782. Epub 2020 May 10.

School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, Beijing, 100083, PR China.

Whereas the adverse effects of vanadium released from smelting activities on soil microbial ecology have been widely recognized, little is known about spatiotemporal vanadium distribution and microbial community dynamics in typical contaminated sites. This study describes vanadium contents associated with health risk and microbial responses in both topsoil and subsoil during four consecutive seasons around an ongoing-production smelter in Panzhihua, China. Higher levels of vanadium concentration exceeding soil background value in China (82 mg/kg) were found close to the smelter. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.114782DOI Listing

Effects of PM exposure in utero on heart injury, histone acetylation and GATA4 expression in offspring mice.

Chemosphere 2020 May 19;256:127133. Epub 2020 May 19.

State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong SAR, China. Electronic address:

Atmospheric fine particulate matter exposure (PM) can increase the incidence and mortality of heart disease, and raise the risk of fetal congenital heart defect, which have recently drawn much attention. In this study, C57BL/6 mice were exposed to PM (approximately equivalent to 174 μg/m) by intratracheal instillation during the gestation. After birth, 10 weeks old offspring mice were divided into four groups: male exposed group (ME), female exposed group (FE), male control group (MC), female control group (FC). Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127133DOI Listing

Hygroscopicity of amino acids and their effect on the water uptake of ammonium sulfate in the mixed aerosol particles.

Sci Total Environ 2020 May 11;734:139318. Epub 2020 May 11.

Multiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz 55128, Germany.

Amino acids are important water-soluble nitrogen-containing compounds in atmospheric aerosols. They can be involved in cloud formation due to their hygroscopicity and have significant influences on the hygroscopicity of inorganic compounds, which have not yet been well characterized. In this work, the hygroscopic properties of three amino acids, including aspartic acid, glutamine, and serine, as well as their mixtures with ammonium sulfate (AS) were investigated using a hygroscopicity tandem differential mobility analyzer (HTDMA) system. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139318DOI Listing

Fragmentation of Saturated Hydrocarbons Upon Atmospheric Pressure Chemical Ionization is Caused by Proton Transfer Reactions.

Anal Chem 2020 May 26. Epub 2020 May 26.

Chemical characterization of complex mixtures of large saturated hydrocarbons is critically important for numerous fields, including petroleomics and renewable transportation fuels, but difficult to achieve. Atmospheric pressure chemical ionization (APCI) mass spectrometry has shown some promise in analysis of saturated hydrocarbons. However, APCI causes extensive fragmentation to saturated hydrocarbons, which impedes its effectiveness. Read More

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http://dx.doi.org/10.1021/acs.analchem.0c00681DOI Listing

Multilevel model for airborne transmission of foot-and-mouth disease applied to Swedish livestock.

PLoS One 2020 26;15(5):e0232489. Epub 2020 May 26.

Swedish Defence Research Agency, Umeå, Sweden.

The foot-and-mouth disease is an ever-present hazard to the livestock industry due to the huge economic consequences following an outbreak that necessitates culling of possibly infected animals in vast numbers. The disease is highly contagious and previous epizootics have shown that it spreads by many routes. One such route is airborne transmission, which has been investigated in this study by means of a detailed multilevel model that includes all scales of an outbreak. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0232489PLOS

Holey Lamellar High Entropy Oxide as Ultra-Highly Active Heterogeneous Catalyst for Solvent-free Aerobic Oxidation of Benzyl Alcohol.

Angew Chem Int Ed Engl 2020 May 26. Epub 2020 May 26.

Jilin University, Department of Chemistry, 2699 Qianjin Street, 130012, Changchun, CHINA.

The development of noble metal free heterogeneous catalysts is promising for selective oxidation of aromatic alcohols; however, the relatively low conversion of non-noble metal catalysts under solvent-free atmospheric condition greatly restricts their industrial application. Herein, we design ed synthesize a novel holey lamellar high entropy oxide (HEO) Co 0.2 Ni 0. Read More

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http://dx.doi.org/10.1002/anie.202004892DOI Listing

Ambient radioactivity and atmospheric electric field: A joint study in an urban environment.

Authors:
Susana Barbosa

J Environ Radioact 2020 Aug 30;219:106283. Epub 2020 Apr 30.

INESC TEC - INESC Technology and Science, Porto, Portugal. Electronic address:

Ambient radioactivity and atmospheric electricity are inextricably linked phenomena. In order to assess the role of ambient radioactivity in the local variability of the atmospheric electric field at an urban site, simultaneous measurements of radon concentration, gamma radiation, and atmospheric electric field are carried out in the city of Porto, Portugal. Both radon and gamma radiation display an average daily cycle peaking before sunrise, but with considerable variability from day to day, particularly in amplitude. Read More

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http://dx.doi.org/10.1016/j.jenvrad.2020.106283DOI Listing

Measurement and modelling of gaseous elemental iodine (I) dry deposition velocity on grass in the environment.

J Environ Radioact 2020 Aug 12;219:106253. Epub 2020 May 12.

Institut de Radioprotection et de Sûrété Nucléaire (IRSN), France. Electronic address:

Assessing the impact of radioactive iodine on humans subsequent to a nuclear accident requires a better understanding of its behaviour in the environment. An original approach aimed at developing a model constrained by data collected during experimental campaigns has been developed. These experimental campaigns, named MIOSEC 2 and MIOSEC 3 respectively, were conducted in the middle of grassland. Read More

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http://dx.doi.org/10.1016/j.jenvrad.2020.106253DOI Listing

Critical transition to woody plant dominance through microclimate feedbacks in North American coastal ecosystems.

Ecology 2020 May 25:e03107. Epub 2020 May 25.

Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA, 94720, USA.

Climate warming is facilitating the expansion of many cold-sensitive woody species in woodland-grassland ecotones worldwide. Recent research has demonstrated that this range expansion can be further enhanced by positive vegetation-microclimate feedbacks whereby woody canopies induce local nocturnal warming, which reduces freeze-induced damage and favors the establishment of woody plants. However, this local positive feedback can be counteracted by biotic drivers such as browsing and the associated consumption of shrub biomass. Read More

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http://dx.doi.org/10.1002/ecy.3107DOI Listing

Effects of MoO and CeO doping on the decomposition and reactivity of NHHSO on VO/TiO catalysts.

Environ Sci Pollut Res Int 2020 May 25. Epub 2020 May 25.

Shanxi Provincial Key Laboratory Higee-Oriented Chemical Engineering, North University of China, Taiyuan, 030051, Shanxi, China.

The deposition of NHHSO on catalysts is one of the key issues for selective catalytic reduction of NO. In this study, NHHSO was preloaded on catalysts, and the effects of MoO and CeO doping on the decomposition and reactivity of NHHSO on VO/TiO catalysts are studied. The results show that the introduction of MoO and CeO significantly promoted NO conversion on the VO/TiO catalysts. Read More

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http://dx.doi.org/10.1007/s11356-020-09343-6DOI Listing

Microfluidic device fabrication mediated by surface chemical bonding.

Analyst 2020 May 26. Epub 2020 May 26.

Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Korea.

This review discusses various bonding strategies for fabricating microfluidic devices, with a special emphasis on the modification of the surface assisted by the use of chemicals to assemble microfluidic devices under mild conditions such as room temperature and atmospheric pressure. The paper includes an overview of the wide ranges of bonding methods used in the fabrication of microfluidic systems, such as anodic bonding, fusion bonding, thermal bonding, solvent bonding, and surface chemical bonding. Among these, surface chemical bonding plays a crucial role between the polydimethylsiloxane (PDMS) and thermoplastics in order to assemble a microfluidic device in a simple and facile manner. Read More

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http://dx.doi.org/10.1039/d0an00614aDOI Listing

Biomagnetic monitoring combined with support vector machine: a new opportunity for predicting particle-bound-heavy metals.

Sci Rep 2020 May 25;10(1):8605. Epub 2020 May 25.

Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Nanjing University of Information Science & Technology, Nanjing, 210044, China.

Biomagnetic monitoring includes fast and simple methods to estimate airborne heavy metals. Leaves of Osmanthus fragrans Lour and Ligustrum lucidum Ait were collected simultaneously with PM from a mega-city of China during one year. Magnetic properties of leaves and metal concentrations in PM were analyzed. Read More

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http://dx.doi.org/10.1038/s41598-020-65677-8DOI Listing

Ecotoxicity of chlorpyrifos to aquatic organisms: A review.

Ecotoxicol Environ Saf 2020 May 22;200:110731. Epub 2020 May 22.

Ocean College of Hebei Agricultural University, Qinhuangdao, Hebei Province, PR China. Electronic address:

Pesticides play an important role in promoting agricultural development, while their unreasonable use has led to environmental problems. Chlorpyrifos (CPF), a typical organophosphate pesticide, is used globally as an insecticide in agriculture. The extensive application of CPF has resulted in water contamination, and CPF has been detected in rivers, lakes, seawater, and even in rain. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2020.110731DOI Listing

Unraveling Conformer Specific Sources of Hydroxyl Radical Production from an Isoprene-derived Criegee Intermediate by Deuteration.

J Phys Chem A 2020 May 25. Epub 2020 May 25.

Ozonolysis of isoprene, the most abundant volatile organic compounds emitted into the Earth's troposphere after methane, yields three distinct Criegee intermediates. Among these, methyl vinyl ketone oxide (MVK-oxide) is predicted to be the major source of atmospheric hydroxyl radicals (OH) from isoprene ozonolysis. Previously, Barber et al. Read More

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http://dx.doi.org/10.1021/acs.jpca.0c02867DOI Listing

Modelling and Analysing Rheological Behaviour of Sour Lemon Juice Concentrate Using Image Processing Methods.

J Texture Stud 2020 May 24. Epub 2020 May 24.

Department of Food Engineering, Osmaniye Korkut Ata University, Osmaniye, Turkey.

In this study, temperature-concentration related rheological behaviour of sour lemon juice concentrate (SLJC) were investigated. Lemons were squeezed, and lemon juices were obtained. SLJC samples were produced by two methods: atmospheric and vacuum conditions. Read More

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http://dx.doi.org/10.1111/jtxs.12537DOI Listing

[Discussion on the consistency of detection methods of main indexes of workplace air, ambient air and indoor air].

Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020 Apr;38(4):300-304

Institute of Occupational Disease Control and Prevention, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China.

Major air pollutants include particulate matter, ozone, sulfur dioxide and nitrogen dioxide, etc. Recent posts have confirmed that air pollution has a variety of adverse health effects on people's health.For professional people, because of occupational hazards of these major atmospheric pollutants also exist in the workplace, is likely to suffer from the double hazards of occupational hazards and air pollutants in the workplace, if similar pollutants are present in the home, the daily exposure concentration of the occupational population may be significantly higher than that of the general population. Read More

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http://dx.doi.org/10.3760/cma.j.cn121094-20190304-00082DOI Listing

Urban air quality, climate, and pollution: from measurement to modeling applications.

Environ Sci Pollut Res Int 2020 May 23. Epub 2020 May 23.

Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, Universidade de São Paulo, São Paulo, Brazil.

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http://dx.doi.org/10.1007/s11356-020-09336-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7245185PMC

Application of WRF-Chem to simulate air quality over Northern Vietnam.

Environ Sci Pollut Res Int 2020 May 23. Epub 2020 May 23.

University of Engineering and Technology, Vietnam National University Hanoi, 144 Xuan Thuy Road, Cau Giay, Hanoi, Vietnam.

The WRF-Chem (Weather Research and Forecasting with Chemistry) model is implemented and validated against ground-based observations for meteorological and atmospheric variables for the first time in Northern Vietnam. The WRF-Chem model was based on HTAPv2 emission inventory with MOZCART chemical-aerosol mechanism to simulate atmospheric variables for winter (January) and summer (July) of 2014. The model satisfactorily reproduces meteorological fields, such as temperature 2 m above the ground and relative humidity 2 m above the ground at 45 NCHMF meteorological stations in January, but lower agreement was found in those simulations of July. Read More

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http://dx.doi.org/10.1007/s11356-020-08913-yDOI Listing

In Vitro Methods to Simulate Pollution and Photo-Pollution Exposure in Human Skin Epidermis.

Methods Mol Biol 2020 May 24. Epub 2020 May 24.

L'Oréal Research and Innovation, Aulnay-sous-Bois, France.

Tissue homeostasis of an individual is a finely orchestrated phenomenon that ensures integrity and steady state in health. Emerging evidence indicates that the environment, especially ambient air pollution, has a lasting impact on this equilibrium (Beelen et al., Lancet 383:785-795, 2014). Read More

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http://dx.doi.org/10.1007/7651_2020_279DOI Listing

Mutant breeding of Starmerella bombicola by atmospheric and room-temperature plasma (ARTP) for improved production of specific or total sophorolipids.

Bioprocess Biosyst Eng 2020 May 24. Epub 2020 May 24.

School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China.

To enhance specific or total sophorolipids (SLs) production by Starmerella bombicola for specific application, mutant library consisting of 106 mutants from 7 batches was constructed via atmospheric and room-temperature plasma (ARTP). When compared to the wild strain, 11, 36 and 12 mutants performed increases over 30% in lactonic, acidic or total SLs production. Genetic stability investigation showed that 8, 7, and 4 mutants could maintain the improved SLs production capacity. Read More

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http://dx.doi.org/10.1007/s00449-020-02377-7DOI Listing

Precipitation of hydrogen peroxide during winter storms and summer typhoons.

Sci Total Environ 2020 May 12;733:139377. Epub 2020 May 12.

Division of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea. Electronic address:

Hydrogen peroxide (HO) affects the activity of microbes, including archaea, and thereby influences the biogeochemical cycles of critical elements in marine and terrestrial environments. In this study, we measured the levels of HO associated with three classes of extreme wet precipitation events: winter storms, tropical storms, and typhoons. In conjunction with precipitation data, the measured HO concentration in a seawater reservoir receiving precipitation was used to estimate rainwater HO concentration and flux. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139377DOI Listing

Amplified ozone pollution in cities during the COVID-19 lockdown.

Sci Total Environ 2020 May 20;735:139542. Epub 2020 May 20.

Fundación CEAM, Parque Tecnológico, C/ Charles R. Darwin, 14, Paterna, Spain.

The effect of lockdown due to coronavirus disease (COVID-19) pandemic on air pollution in four Southern European cities (Nice, Rome, Valencia and Turin) and Wuhan (China) was quantified, with a focus on ozone (O). Compared to the same period in 2017-2019, the daily O mean concentrations increased at urban stations by 24% in Nice, 14% in Rome, 27% in Turin, 2.4% in Valencia and 36% in Wuhan during the lockdown in 2020. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139542DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7237366PMC

Severe air pollution links to higher mortality in COVID-19 patients: the "double-hit" hypothesis.

J Infect 2020 May 21. Epub 2020 May 21.

IRCCS San Raffaele Scientific Institute, Via Olgettina 60, Milan, Italy. Electronic address:

Objectives: In areas of SARS-CoV-2 outbreak worldwide mean air pollutants concentrations vastly exceed the maximum limits. Chronic exposure to air pollutants have been associated with lung ACE-2 over-expression which is known to be the main receptor for SARS-coV2. The aim of this study was to analyse the relationship between air pollutants concentration (PM 2. Read More

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http://dx.doi.org/10.1016/j.jinf.2020.05.031DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240268PMC

Spatiotemporal variations of nitrate sources and dynamics in a typical agricultural riverine system under monsoon climate.

J Environ Sci (China) 2020 Jul 9;93:98-108. Epub 2020 Apr 9.

Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address:

Nitrogen pollution is a serious environmental issue in the Danjiangkou Reservoir region (DRR), the water source of the South-to-North Water Diversion Project of China. In this research, seasonal surveys and a bi-weekly time series survey were conducted in the Qihe River Basin, one of the most densely populated agricultural basins in the DRR. Hydrochemical compositions (NO and Cl), dual isotopes (δD-HO, δO-HO, δN-NO, and δO-NO), and a Markov Chain Monte Carlo isotope mixing model were jointly applied to unravel the sources, migrations, and transformations of the nitrate (NO) in the basin. Read More

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http://dx.doi.org/10.1016/j.jes.2020.03.007DOI Listing

Ozone pollution characteristics and sensitivity analysis using an observation-based model in Nanjing, Yangtze River Delta Region of China.

J Environ Sci (China) 2020 Jul 12;93:13-22. Epub 2020 Mar 12.

Nanjing Environmental Monitoring Center, Jiangsu Province, Nanjing 210013, China.

Ground-level ozone (O) has become a critical pollutant impeding air quality improvement in Yangtze River Delta region of China. In this study, we present O pollution characteristics based on one-year online measurements during 2016 at an urban site in Nanjing, Jiangsu Province. Then, the sensitivity of O to its precursors during 2 O pollution episodes in August was analyzed using a box model based on observation (OBM). Read More

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http://dx.doi.org/10.1016/j.jes.2020.02.027DOI Listing

Superior CO uptake on nitrogen doped carbonaceous adsorbents from commercial phenolic resin.

J Environ Sci (China) 2020 Jul 16;93:109-116. Epub 2020 Apr 16.

Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, PR China. Electronic address:

In this study, N-doped porous carbons were produced with commercial phenolic resin as the raw material, urea as the nitrogen source and KOH as the activation agent. Different from conventional carbonization-nitriding-activation three-step method, a facile two-step process was explored to produce N-incorporated porous carbons. The as-obtained adsorbents hold superior CO uptake, i. Read More

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http://dx.doi.org/10.1016/j.jes.2020.04.006DOI Listing

Environmental impact and health risk assessment of volatile organic compound emissions during different seasons in Beijing.

J Environ Sci (China) 2020 Jul 9;93:1-12. Epub 2019 Dec 9.

China National Environmental Monitoring Center (CNEMC), Beijing 100012, China. Electronic address:

Volatile organic compounds (VOCs) are major contributors to air pollution. Based on the emission characteristics of 99 VOCs that daily measured at 10 am in winter from 15 December 2015 to 17 January 2016 and in summer from 21 July to 25 August 2016 in Beijing, the environmental impact and health risk of VOC were assessed. In the winter polluted days, the secondary organic aerosol formation potential (SOAP) of VOC (199. Read More

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http://dx.doi.org/10.1016/j.jes.2019.11.006DOI Listing

Spatial and temporal variations in mire surface water chemistry as a function of geology, atmospheric circulation and zonal features in the south-eastern part of Western Siberia.

Sci Total Environ 2020 May 11;733:139343. Epub 2020 May 11.

Siberian Research Institute of Agriculture and Peat-branch of Siberian Federal Scientific Centre of Agro-BioTechnologies of the Russian Academy of Sciences, Tomsk, 3 Gagarin st., 634050, Russian Federation.

This study analysed the chemistry of water samples collected from mires in the south-eastern part of Western Siberia. The aim was to determine spatial and temporal patterns in the hydrochemistry of mires in relation to the environmental conditions and geological history of the region. The results show that concentrations of Fe, Са, Mg, Na, and HCO ions are higher than those obtained in other regions of Russia and Europe, which is consistent with the geological conditions of Western Siberia. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139343DOI Listing

Emissions vs. turbulence and atmospheric stability: A study of their relative importance in determining air pollutant concentrations.

Sci Total Environ 2020 May 13;733:139300. Epub 2020 May 13.

Department of Civil and Environmental Engineering, Technion, Israel Institute of Technology, Haifa 32000, Israel.

Air pollution in the urban environment is a major concern. The ambient concentrations depend on the levels of transboundary imported pollution, the intensity of local sources and the prevailing atmospheric conditions. This work studies the relative impact of two atmospheric variables-atmospheric stability and regional scale turbulence-in determining the air pollution concentrations. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139300DOI Listing

Synthesis of studies on significant atmospheric electrical effects of major nuclear accidents in Chernobyl and Fukushima.

Sci Total Environ 2020 May 8;733:139271. Epub 2020 May 8.

Research Centre for Astronomy and Earth Sciences, GGI, Hungarian Academy of Sciences, Sopron, Hungary.

Radioactive materials released during the two most serious nuclear accidents in history, at Chernobyl and Fukushima, caused exceptionally significant contamination and perturbations of the environment. Among them, this paper focuses on the effects related to the atmospheric electricity (AE). Measurements of the most significant disturbances in the values of various AE parameters recorded near ground level are reviewed and the corresponding results are jointly evaluated. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139271DOI Listing