11,487 results match your criteria pollution evaluated

Insight into Organic Pollutant Adsorption Characteristics on a g-CN Surface by Attenuated Total Reflection Spectroscopy and Molecular Dynamics Simulation.

Langmuir 2021 Jun 15. Epub 2021 Jun 15.

State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing 210023, P. R. China.

Herein the adsorption characteristics of zwitterionic dye pollutant Rhodamine B (RhB) on a g-CN surface were investigated by both an attenuated total reflection spectroscopy (ATRS) experiment and a molecular dynamics simulation (MDS). For experimental investigation, g-CN was coated on a silica optical fiber (SOF) surface to fabricate an adsorption film. According to the ATRS response, adsorption thermodynamics and thermodynamics results were in situ obtained and evaluated. Read More

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Assessment of the hydrochemistry, water quality, and human health risk of groundwater in the northwest of Nansi Lake Catchment, north China.

Environ Geochem Health 2021 Jun 15. Epub 2021 Jun 15.

801 Institute of Hydrogeology and Engineering Geology, Shandong Provincial Bureau of Geology & Mineral Resources, Jinan, 250014, China.

In this study, the formation mechanism and water quality of groundwater in the northwest of Nansi Lake Catchment (NNLC) were analyzed through mathematical statistics, hydrochemical analysis and entropy weighted water quality index (EWQI), and the human health risk of nitrate was also evaluated. To this end, 89 wells in the NNLC were sampled, and the groundwater samples were divided into three groups (I, II, and III) according to cluster analysis results and spatial distribution. The main results are as follows: Topographically, Groups I, II, and III correspond to the alluvial plains, apron plain, and low hills and its front margin, respectively. Read More

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The association between fine particulate matter (PM) and chronic kidney disease using electronic health record data in urban Minnesota.

J Expo Sci Environ Epidemiol 2021 Jun 14. Epub 2021 Jun 14.

Division of Environmental Health Science, School of Public Health, University of Minnesota, Minneapolis, MN, USA.

Background: Recent evidence has shown that fine particulate matter (PM) may be an important environmental risk factor for chronic kidney disease (CKD), but few studies have examined this association for individual patients using fine spatial data.

Objective: To investigate the association between PM and CKD (estimated glomerular filtration rate [eGFR]<45 ml/min/1.73 m) in the Twin-Cities area in Minnesota using a large electronic health care database (2012-2019). Read More

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Examining spatiotemporal variability of urban particulate matter and application of high-time resolution data from a network of low-cost air pollution sensors.

Atmos Environ (1994) 2019 Sep;213:579-584

General Dynamics Information Technology; Edison, NJ 08837.

Traditional air monitoring approaches using regulatory monitors have historically been used to assess regional-scale trends in air pollutants across large geographical areas. Recent advances in air pollution sensor technologies could provide additional information about nearby sources, support the siting of regulatory monitoring stations, and improve our knowledge of finer-scale spatiotemporal variation of ambient air pollutants and their associated health effects. Sensors are now being developed that are much smaller and lower cost than traditional ambient air monitoring systems and are capable of being deployed as a network to provide greater coverage of a given area. Read More

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September 2019

Optimizing granular anammox retention via hydrocycloning during two-stage deammonification of high-solid sludge anaerobic digester supernatant.

Sci Total Environ 2021 May 27;791:148048. Epub 2021 May 27.

State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China. Electronic address:

High-solid sludge anaerobic digestion leads to increased organic matters in digester supernatant, which promotes heterotrophic competition and reduces anaerobic ammonium oxidation (anammox) retention. This research demonstrated effective anammox retention by hydrocycloning during a two-stage deammonification. Anammox retention was evaluated by dividing large (>0. Read More

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In-situ investigation of dye pollutant adsorption performance on graphitic carbon nitride surface: ATR spectroscopy experiment and MD simulation insight.

J Hazard Mater 2021 Jun 3;418:126297. Epub 2021 Jun 3.

School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China.

The adsorption performances on graphitic carbon nitride (g-CN) surface were investigated for organic dye pollutants by both experimental and calculation methods. For experimental investigation, adsorption thermodynamics and kinetics results were in-situ obtained and evaluated. With [Formula: see text] by Langmuir modeling g-CN showed superior adsorption spontaneity of MB >MO. Read More

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Phthalic acid esters degradation by a novel marine bacterial strain Mycolicibacterium phocaicum RL-HY01: Characterization, metabolic pathway and bioaugmentation.

Sci Total Environ 2021 Jun 5;791:148303. Epub 2021 Jun 5.

Shenzhen Research Institute of Guangdong Ocean University, Shenzhen 518108, China; College of Coastal Agricultural Sciences, School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China. Electronic address:

Phthalic acid esters (PAEs) are one of the most widely used plasticizers and the well-studied environmental pollutants with endocrine disrupting properties. Investigation about PAEs in terrestrial ecosystem has been extensively conducted while the fate of PAEs in marine environment remains underexplored. In this study, a novel di-(2-ethylhexyl) phthalate (DEHP) degrading marine bacterial strain, Mycolicibacterium phocaicum RL-HY01, was isolated and characterized from intertidal sediments. Read More

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Effect of ZnO nanoparticles on Zn, Cu, and Pb dissolution in a green bioretention system for urban stormwater remediation.

Chemosphere 2021 May 29;282:131045. Epub 2021 May 29.

Naturalea, Terra Alta, 51, 08211, Castellar del Vallès, Barcelona, Spain.

Stormwater runoff from urban and suburban areas can carry hazardous pollutants directly into aquatic ecosystems. These pollutants, such as metals, nutrients, aromatic hydrocarbons, pesticides, and pharmaceuticals, are very toxic to aquatic organisms. Recently, significant amounts of zinc oxide engineered nanoparticles (ZnO-NPs) have been detected in urban stormwater and its bioretention systems. Read More

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A permeable electrochemical reactive barrier for underground water remediation using TiO/graphite composites as heterogeneous electrocatalysts without releasing of chemical substances.

J Hazard Mater 2021 Jun 4;418:126318. Epub 2021 Jun 4.

Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China. Electronic address:

Permeable reactive barriers (PRBs) are well-studied and widely-applied technologies in underground water remediation. However, the releasing of chemical substances cannot be avoided during the PRBs operation. In this study, a novel permeable electrochemical reactive barrier (PERB) was fabricated for underground water remediation using a TiO/graphite composite (TiO/C) as the heterogeneous electrocatalyst. Read More

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Construction of a novel microbial consortium valued for the effective degradation and detoxification of creosote-treated sawdust along with enhanced methane production.

J Hazard Mater 2021 May 27;418:126091. Epub 2021 May 27.

Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China. Electronic address:

Lignocellulosic biomass represents an unlimited and ubiquitous energy source, which can effectively address current global challenges, including climate change, greenhouse gas emissions, and increased energy demand. However, lignocellulose recalcitrance hinders microbial degradation, especially in case of contaminated materials such as creosote (CRO)-treated wood, which necessitates appropriate processing in order to eliminate pollution. This study might be the first to explore a novel bacterial consortium SST-4, for decomposing birchwood sawdust, capable of concurrently degrading lignocellulose and CRO compounds. Read More

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Chemical compositions evolution of groundwater and its pollution characterization due to agricultural activities in Yinchuan Plain, northwest China.

Environ Res 2021 Jun 8;200:111449. Epub 2021 Jun 8.

School of Hydropower & Information Engineering, Huazhong University of Science and Technology, Wuhan, PR China.

Yinchuan Plain is a typically intensive cultivated region in the northwest of China. The irrigation return infiltration from Yellow River is the main source of groundwater recharge. Deep soil layers, sandy vadose zones, and dense irrigation canals make the groundwater susceptible to the return flow which contains pollutants originating mainly from agriculture applications, particularly from the extensive use of nitrogen fertilizer and manure. Read More

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Characterising non-linear associations between airborne pollen counts and respiratory symptoms from the AirRater smartphone app in Tasmania, Australia: A case time series approach.

Environ Res 2021 Jun 8;200:111484. Epub 2021 Jun 8.

Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, 7000, Australia; Public Health Services, Department of Health, Hobart, TAS, 7000, Australia. Electronic address:

Pollen is a well-established trigger of asthma and allergic rhinitis, yet concentration-response relationships, lagged effects, and interactions with other environmental factors remain poorly understood. Smartphone technology offers an opportunity to address these challenges using large, multi-year datasets that capture individual symptoms and exposures in real time. We aimed to characterise associations between six pollen types and respiratory symptoms logged by users of the AirRater smartphone app in Tasmania, Australia. Read More

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Comparative and mechanistic toxicity assessment of structure-dependent toxicity of carbon-based nanomaterials.

J Hazard Mater 2021 Jun 2;418:126282. Epub 2021 Jun 2.

School of Civil and Environmental Engineering, Cornell University, 220 Hollister Dr., Ithaca, NY 14853, United States. Electronic address:

The wide application of carbon-based nanomaterials (CNMs) has resulted in the ubiquity of CNMs in the natural environment and they potentially impose adverse consequences on ecosystems and human health. In this study, we comprehensively evaluated and compared potential toxicological effects and mechanisms of seven CNMs in three representative types (carbon blacks, graphene nanoplatelets, and fullerenes), to elucidate the correlation between their physicochemical/structural properties and toxicity. We employed a recently-developed quantitative toxicogenomics-based toxicity testing system with GFP-fused yeast reporter library targeting main cellular stress response pathways, as well as conventional phenotype-based bioassays. Read More

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DNA integrity and ecophysiological responses of Spanish populations of Ulmus glabra to increasing ozone levels.

Ecotoxicology 2021 Jun 10. Epub 2021 Jun 10.

DEB, University of Tuscia, Viterbo, Italy.

Ulmus glabra is a deciduous tree with a wide distribution in the Eurosiberian region. The southernmost populations, in the Mediterranean area, are fragmented in mountain areas which act as a refugium. These small relict populations can act as sentinel of global change, including climate change and impacts of human activities such as air pollution. Read More

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Experimental and comparative study of Chinese commercial improved coal-fired cooking and space-heating stoves.

Environ Sci Pollut Res Int 2021 Jun 9. Epub 2021 Jun 9.

College of Engineering, Nanjing Agricultural University, Nanjing, 210031, Jiangsu, China.

The extensive use of traditional cooking stoves to meet daily cooking and heating requirements has highlighted the serious problem of indoor and outdoor air pollution. This study evaluates three improved cooking and heating stoves (ICHSs) and compared them with a traditional stove as a baseline reference. The stoves' performance regarding emission and thermal efficiency was evaluated with burning raw coal. Read More

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A biochar supported magnetic metal organic framework for the removal of trivalent antimony.

Chemosphere 2021 Jun 1;282:131068. Epub 2021 Jun 1.

College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China.

Metal organic framework (MOF) nanoparticles are recognized for their effective removal of metal ions from aqueous systems. However, the application of nanoparticles in a powder form as synthesized is not practical and recovery is not easy. We prepared a recyclable magnetic MOF nanoparticle phase and used a widely available waste biomass to generate biochar to support magnetic nanoparticles applied in the treatment of aqueous antimony pollution. Read More

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Molybdenum disulfide (MoS): A novel activator of peracetic acid for the degradation of sulfonamide antibiotics.

Water Res 2021 May 26;201:117291. Epub 2021 May 26.

State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.

Sulfonamide antibiotics (SAs) are typical antibiotics and have attracted increasing concerns about their wide occurrence in environment as well as potential risk for human health. In this study, we applied a novel advanced oxidation process in SAs degradation by combining molybdenum sulfide and peracetic acid (MoS/PAA). Reactive oxygen species (ROS) including HO, CHC(O)O, CHC(O)OO, and O were generated from PAA by MoS activation and contributed to SAs degradation. Read More

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Global Health Impacts of Dust Storms: A Systematic Review.

Environ Health Insights 2021 24;15:11786302211018390. Epub 2021 May 24.

UCL Bartlett Development Planning Unit, London School of Hygiene & Tropical Medicine, London, UK.

Background: Dust storms and their impacts on health are becoming a major public health issue. The current study examines the health impacts of dust storms around the world to provide an overview of this issue.

Method: In this systematic review, 140 relevant and authoritative English articles on the impacts of dust storms on health (up to September 2019) were identified and extracted from 28 968 articles using valid keywords from various databases (PubMed, WOS, EMBASE, and Scopus) and multiple screening steps. Read More

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The Association Between Short-term Exposure to Ambient Air Pollution and Patient-Level Home Blood Pressure Among Patients With Chronic Cardiovascular Diseases in a Web-Based Synchronous Telehealth Care Program: Retrospective Study.

JMIR Public Health Surveill 2021 Jun 8;7(6):e26605. Epub 2021 Jun 8.

Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.

Background: The association between short-term exposure to ambient air pollution and blood pressure has been inconsistent, as reported in the literature.

Objective: This study aimed to investigate the relationship between short-term ambient air pollution exposure and patient-level home blood pressure (HBP).

Methods: Patients with chronic cardiovascular diseases from a telehealth care program at a university-affiliated hospital were enrolled as the study population. Read More

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Advantages and limitations of various treatment chamber designs for reversible and irreversible electroporation in life sciences.

Bioelectrochemistry 2021 May 11;141:107841. Epub 2021 May 11.

Institute of Food Technology, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria.

The fundamental mechanisms of pulsed electric fields on biological cells are not yet fully elucidated, though it is apparent that membrane electroporation plays a crucial role. Little is known about treatment-chamber-specific effects, and systematic studies are scarce. Thus, the present study evaluates the (dis-)advantages of various treatment chamber designs for liquid applications at differing scales. Read More

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Construction of MoO nanopaticles /g-CN nanosheets 0D/2D heterojuntion photocatalysts for enhanced photocatalytic degradation of antibiotic pollutant.

Chemosphere 2021 May 29;282:131049. Epub 2021 May 29.

College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha, Hunan, 410082, China.

A new type of 0D-2D Z-scheme heterojunction photocatalyst (MoO/g-CN) was successfully prepared via simple hydrothermal calcination method. The catalytic activities of MoO/g-CN was evaluated by the degradation effect of tetracycline. The results indicated that the 0D-2D MoO/g-CN Z-scheme heterojunction was significantly better than that of original g-CN. Read More

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Dynamic Coordination between a Triphenylamine-Functionalized Salicylaldehyde Schiff Base and a Copper(II) Ion.

Inorg Chem 2021 Jun 7. Epub 2021 Jun 7.

Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Material and Energy, Guangdong University of Technology, Guangzhou 510006, P. R. China.

The coordination between a ligand and a metal is a spontaneous and uncontrollable process. In this Article, we successfully observe the formation of metal coordination in a triphenylamine-functionalized salicylaldehyde Schiff base with a copper(II) ion. The ligand first reacts with Cu in a stepwise process to afford the dynamic complex ([ligand]:[Cu] = 1:1), which further reacts with an extra copper(II) ion to afford with the following stepwise (or cumulative) stability constants: = 4. Read More

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A Community-Based Approach to Developing a Mobile Device for Measuring Ambient Air Exposure, Location, and Respiratory Health.

Environ Justice 2015 Aug;8(4):126-134

In west Eugene (Oregon), community research indicates residents are disproportionately exposed to industrial air pollution and exhibit increased asthma incidence. In Carroll County (Ohio), recent increases in unconventional natural gas drilling sparked air quality concerns. These community concerns led to the development of a prototype mobile device to measure personal chemical exposure, location, and respiratory function. Read More

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Fine Particulate Matter Related to Multiple Sclerosis Relapse in Young Patients.

Front Neurol 2021 21;12:651084. Epub 2021 May 21.

Assistance Publique des Hôpitaux de Paris, APHP, Hôpital Saint Antoine, Neurology Department, Paris, France.

Particulate matter (PM) of aerodynamic diameter smaller than 10 μm (PM) has been associated with multiple sclerosis (MS) relapse. However, the impact of smaller PM with a greater ability to penetrate human organism has never been assessed. We evaluated the impact of PM smaller than 2. Read More

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Indexes for the assessment of bacterial pollution in bathing waters from point sources: The northern Adriatic Sea CADEAU service.

J Environ Manage 2021 Jun 4;293:112878. Epub 2021 Jun 4.

Institute for Environmental Protection and Research (ISPRA), via Vitaliano Brancati 48, 00144, Rome, Italy.

This paper presents a novel set of water quality indexes to identify the area potentially affected by point sources of bacterial pollution in coastal bathing waters. The indexes, developed in the framework of the CADEAU service, are evaluated on the results of a modelling system based on the integration of a high-resolution ocean model, remote sensing observations and in situ monitoring data for the northern Adriatic Sea. In particular, the system is a downscaling of the Mediterranean Copernicus Marine Environment Monitoring Service and exploits data produced within the Bathing Waters Directive, the Water Framework Directive and the Urban Waste Water Treatment Directive to create added value products. Read More

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Assessment of pesticide residues in waters and soils of a vineyard region and its temporal evolution.

Environ Pollut 2021 May 28;284:117463. Epub 2021 May 28.

Institute of Natural Resources and Agrobiology of Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008, Salamanca, Spain; Department of Analytical Chemistry, Nutrition and Food Science. University of Salamanca, Plaza de la Merced s/n, 37008, Salamanca, Spain.

Sustainable agriculture practices and integrated pest management for avoiding environmental pollution are necessary to maintain a high yield in vineyard areas. Pesticide residues in groundwater in a vineyard area of La Rioja (Spain) have been evaluated in previous years, and they could now have varied after farmers have adopted the different measures recommended. Accordingly, this research's objectives were (i) to evaluate the occurrence and seasonal distribution (spring, summer, and autumn samplings) of pesticides (36) plus their degradation products (DP) (11) in water and soil samples (23 + 15) in La Rioja (Northern Spain), and (ii) to compare the current water quality (2019) with that determined previously (2011). Read More

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Multiresidues of environmental contaminants in bats from Turkey.

Chemosphere 2021 May 28;282:131022. Epub 2021 May 28.

Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Ankara University, Turkey. Electronic address:

Bat populations have been steadily declining, most likely because of anthropogenic factors. Identification and classification of these risks have crucial importance in ensuring the survival of this species. Bats often coexist with humans in urban, industrial, and agricultural areas and are potentially exposed to a range of environmental pollutants. Read More

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High time-resolved characterization of airborne microbial community during a typical haze pollution process.

J Hazard Mater 2021 08 24;415:125722. Epub 2021 Mar 24.

School of Water and Environment, Chang'an University, Xi'an 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region (Chang'an University), Ministry of Education, Xi'an 710054, China. Electronic address:

Variations of bioaerosol characteristics during the process of haze pollution have rarely been explored. In this study, high time-resolved variations of the community structures of bacteria, fungi, and ammonia-oxidizing microorganisms (AOMs) were assessed during a typical haze pollution process. The impacts of meteorological factors, water-soluble inorganic ions (WSII), and organic dicarboxylic acids (DCA) on the airborne microbial community were systematically evaluated. Read More

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Quantitative analysis of source and fate of N-nitrosamines and their precursors in an urban water system in East China.

J Hazard Mater 2021 08 22;415:125700. Epub 2021 Mar 22.

State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China, 100084; Research Institute for Environmental Innovation (Suzhou), Tsinghua, Suzhou, China, 215163. Electronic address:

The source and fate of N-nitrosamines and their precursors in terms of formation potential (FP) was investigated quantitatively in the city level for the first time. Different sources of nitrosamines and their precursors were investigated in one city in the Yangtze River delta, China. The source water located downstream of the city contained 8. Read More

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