334,966 results match your criteria pollutants


Glutathione S-transferases and their implications in the lung diseases asthma and chronic obstructive pulmonary disease: Early life susceptibility?

Redox Biol 2021 May 2;43:101995. Epub 2021 May 2.

Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, the Netherlands. Electronic address:

Our lungs are exposed daily to airborne pollutants, particulate matter, pathogens as well as lung allergens and irritants. Exposure to these substances can lead to inflammatory responses and may induce endogenous oxidant production, which can cause chronic inflammation, tissue damage and remodeling. Notably, the development of asthma and Chronic Obstructive Pulmonary Disease (COPD) is linked to the aforementioned irritants. Read More

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Effects of ferrous iron supplementation on reductive dechlorination of tetrachloroethene and on methanogenic microbial community.

FEMS Microbiol Ecol 2021 May 12. Epub 2021 May 12.

Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, Ibaraki 305-8567, Japan.

Chloroethenes are common soil and groundwater pollutants. Their dechlorination is impacted by environmental factors, such as the presence of metal ions. We here investigated the effect of ferrous iron on bacterial reductive dechlorination of chloroethenes and on methanogen community. Read More

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Air quality in cabin environment of different passenger cars: effect of car usage, fuel type and ventilation/infiltration conditions.

Environ Sci Pollut Res Int 2021 May 12. Epub 2021 May 12.

Department of Mechanical Engineering, Environmental Technology Laboratory, University of Western Macedonia, Sialvera & Bakola Street, 50100, Kozani, Greece.

Despite that commuters spend only 5.5% of their time in cabin vehicles, their exposure to harmful air pollutants, originated from the vehicle itself, and traffic emission is considered significant. In this study, two passenger cars with different type of fuels were investigated in terms of air quality and thermal comfort of their cabin. Read More

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Biodegradation of chlorpyrifos by a Weissella confusa strain and evaluation of some probiotic traits.

Arch Microbiol 2021 May 12. Epub 2021 May 12.

Laboratory of Molecular Toxicology, Faculty of Nature and Life Sciences, University Mohamed Seddik Benyahia of Jijel, Jijel, Algeria.

Pesticides play an important role in agriculture; however, their excessive use causes several problems such as pollution of ecosystems and risks to human health. The presence of microorganisms able to degrade these pollutants can reduce their negative effect. The objective of this study was to test the capacity of Weissella confusa Lb. Read More

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Pharmaceutical contaminants in shallow groundwater and their implication to poor sanitation facilities in low-income countries.

Environ Toxicol Chem 2021 May 12. Epub 2021 May 12.

Faculty of Engineering, University of Ruhuna, Hapugala, Galle, Sri Lanka.

Rudimentary onsite sanitation systems (OSSs) are extensively used in low-income countries despite the risk of groundwater contamination. The present study investigated the potential impact of community soak pits on sandy shallow aquifers in a rural area in Sri Lanka. Thirty-two groundwater samples were collected and measured for traditional indicators, i. Read More

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Impact of treated sewage on meiobenthic nematodes: a case study from the Tunisian Refining Industries Company.

Braz J Biol 2021 10;82:e246116. Epub 2021 May 10.

Laboratory of Biomonitoring of the Environment LR01 ES14, University of Carthage, Faculty of Sciences of Bizerte, Zarzouna 7021, Tunisia.

The main objective of the current study was to assess the impact of the water taken from the 'Tunisian Refining Industries Company' on meiobenthic nematodes, before and after a series of treatments in decantation basins followed by its discharge in Bizerte bay, Tunisia. The comparison of environmental parameters of the two types of water was clearly indicative of an improvement in the quality of treated waters after a significant reduction in their loads in hydrocarbons. Overall, the water retained a good quality after being treated by 'Tunisian Refining Industries Company' before discharge in the sea. Read More

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Indoor pet allergen exposures modify the effects of chemical air pollutants on respiratory symptoms.

Int J Tuberc Lung Dis 2021 May;25(5):350-357

Épidémiologie des maladies Allergiques et Respiratoires, Institut Pierre Louis d´Épidémiologie et de Santé Publique, Sorbonne University and Institut national de la santé et de la recherche médicale, Saint Antoine Medical School, Paris, France.

Indoor volatile organic compound (VOC) levels, which are generally correlated with each other, may have an additive or synergistic effect on health. VOC synergy with allergens is a suspected mechanism affecting respiration. To determine the effect of exposure to interactions between VOCs and allergens on respiratory symptoms in individuals aged ≥15 years. Read More

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Health-care Waste Management and Risk Factors Among Health Professionals in Public Health Facilities of South Omo Zone, South West Ethiopia, 2018.

J Healthc Leadersh 2021 3;13:119-128. Epub 2021 May 3.

Department of Public Health, Arba Minch University, Arba Minch, SNNPR, Ethiopia.

Introduction: Health-care waste is a great concern because, in addition to containing conventional toxic pollutants like mercury, chlorinated plastics, and solvents; it also includes a number of toxic materials not found in typical waste. There were no scientific data in Ethiopia that reveal practice toward management of health-care waste. Therefore, the aim of this study was to assess the management of health professionals toward health-care waste in South Omo zone public health facilities, South West Ethiopia, 2018. Read More

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The influence of active carbon contaminants on the ozonation mechanism interpretation.

Sci Rep 2021 May 11;11(1):9934. Epub 2021 May 11.

Department of Analytical and Environmental Chemistry, Faculty of Chemistry, Adam Mickiewicz University Poznan, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland.

In water treatment technology, activated carbons are used primarily as sorbents to remove organic impurities, mainly natural organic matter, but also as catalysts in the ozonation process. Commercially available activated carbons are usually contaminated with mineral substances, classified into two main groups: alkali metals (Ca, Na, K, Li, Mg) and multivalent metals (Al, Fe, Ti, Si). The presence of impurities on the carbon surface significantly affects the pH values determined for raw and ozonated carbon as well as their acidity and alkalinity. Read More

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Occurrence of retinoic acids and their metabolites in sewage and their removal efficiencies by chemically enhanced primary treatment and secondary biological treatment.

Chemosphere 2021 May 3;280:130745. Epub 2021 May 3.

State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China; The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China. Electronic address:

Sewage treatment plants (STPs) are important in densely populated megacities like Hong Kong to control the release of harmful pollutants from households and industries into the receiving water bodies and maintain water quality for supporting various beneficial uses. This study investigated the occurrence of the teratogenic retinoic acids (RAs) and their oxidative metabolites in sewage and sludge of six selected STPs that treat about 87% of all sewage in Hong Kong annually, and compared the removal efficiencies of these compounds from sewage between two major sewage treatment processes, i.e. Read More

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Development of a new method for isolation of urban air particulates deposited in the human lung tissue.

Chemosphere 2021 Apr 27;280:130585. Epub 2021 Apr 27.

Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran; Department of Research Methodology and Data Analysis, Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran. Electronic address:

Particulate matters (PMs) are important pollutants in urban air pollution because of their variable composition. The pulmonary clearance of PMs is critical to prevent long-term immunological responses. This study established a new method for the isolation of probably deposited urban air particulates from the human lung tissue, to investigate the features of uncleared particulates. Read More

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Effects of driving behavior on real-world emissions of particulate matter, gaseous pollutants and particle-bound PAHs for diesel trucks.

Environ Pollut 2021 May 3;286:117292. Epub 2021 May 3.

Department of Environmental Engineering and Management, Chaoyang University of Technology, Taiwan. Electronic address:

This study employed a portable emissions measurement system to investigate the effects of vehicle attributes, driving behavior, and road grade on real-world emissions of particulate matter (PM), regulated gaseous pollutants, and particle-bound polycyclic aromatic hydrocarbons (PAHs) for old-model diesel trucks (model year 1995-2006, 6.7-35.0 metric ton) with little to no tailpipe emission control. Read More

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Trade-offs between short-term mortality attributable to NO and O changes during the COVID-19 lockdown across major Spanish cities.

Environ Pollut 2021 May 4;286:117220. Epub 2021 May 4.

Climate and Health Program, Barcelona Institute for Global Health, Barcelona, Spain.

The emergence of the COVID-19 pandemic forced most countries to put in place lockdown measures to slow down the transmission of the virus. These lockdowns have led to temporal improvements in air quality. Here, we evaluate the changes in NO and O levels along with the associated impact upon premature mortality during the COVID-19 lockdown and deconfinement periods along the first epidemic wave across the provincial capital cities of Spain. Read More

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Analysis of the spatial effect of outward foreign direct investment on air pollution: evidence from China.

Authors:
Anhua Zhou Jun Li

Environ Sci Pollut Res Int 2021 May 11. Epub 2021 May 11.

Business School, Hunan Normal University, Changsha, 410081, China.

Outward foreign direct investment (OFDI) plays a pivotal role in the strategy to build a high-level and open economy. This research used spatial panel models and data from 30 provinces in China from 2004 to 2017 to empirically analyse the relationship between OFDI and air pollution. The results revealed that, first, China's air pollution showed two spatial clustering areas: the eastern coastal area (e. Read More

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Tunable Multiplexed Whole-Cell Biosensors as Environmental Diagnostics for ppb-Level Detection of Aromatic Pollutants.

ACS Sens 2021 May 11. Epub 2021 May 11.

Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai 400076, India.

Aromatics such as phenols, benzene, and toluene are carcinogenic xenobiotics which are known to pollute water resources. By employing synthetic biology approaches combined with a structure-guided design, we created a tunable array of whole-cell biosensors (WCBs). The MopR genetic system that has the natural ability to sense and degrade phenol was adapted to detect phenol down to ∼1 ppb, making this sensor capable of directly detecting phenol in permissible limits in drinking water. Read More

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Interdisciplinary Approaches to COVID-19.

Adv Exp Med Biol 2021 ;1318:923-936

Universal Scientific Education and Research Network (USERN), The World, Tehran, Iran.

The coronavirus disease 2019 (COVID-19) pandemic has been a significant concern worldwide. The pandemic has demonstrated that public health issues are not merely a health concern but also affect society as a whole. In this chapter, we address the importance of bringing together the world's scientists to find appropriate solutions for controlling and managing the COVID-19 pandemic. Read More

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Application of interval-valued Pythagorean fuzzy VIKOR approach for petroleum sludge treatment technology evaluation and selection.

Environ Sci Pollut Res Int 2021 May 10. Epub 2021 May 10.

School of Management Engineering, Shandong Jianzhu University, Jinan, 250000, China.

Petroleum sludge is produced during oilfield development and production and can negatively impact the production area and surrounding environment. With increasing attention to the environmental protection of oilfields, finding an energy-efficient, environmentally sound, cost-effective and socially acceptable sludge treatment method is crucial to the sustainable development of oil companies. However, there are several problems in the selection process: ① there is no effective index system for the evaluation of treatment technologies; ② there is data uncertainty and loss of information; ③ experts in the field often make one-sided decisions; and ④ the common decision models fail to balance the general effect and local dominance of a treatment technology. Read More

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Morphological characteristics and ecological risk assessment of nitrogen and phosphorus in the sediments of Futunxi watershed in Fujian province.

Environ Monit Assess 2021 May 10;193(6):335. Epub 2021 May 10.

School of Geography Science, Nanjing Normal University, Nanjing, 210023, Jiangsu, China.

The total amount and morphology of nitrogen and phosphorus in sediments have important environmental significance. The study of the ecological risk assessment of nitrogen and phosphorus in sediments is important to understand the environmental quality of water body in the basin. In this study, taking the Futunxi Basin of Fujian Province as an example, the single factor index and bioavailability coefficient method were used to evaluate the ecological risk of nitrogen and phosphorus in the sediments, and reveal the spatial change and environmental significance of the nitrogen and phosphorus forms. Read More

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Risk of groundwater contamination widely underestimated because of fast flow into aquifers.

Proc Natl Acad Sci U S A 2021 May;118(20)

Department of Civil Engineering, University of Bristol, BS8 1TR, Bristol, United Kingdom.

Groundwater pollution threatens human and ecosystem health in many regions around the globe. Fast flow to the groundwater through focused recharge is known to transmit short-lived pollutants into carbonate aquifers, endangering the quality of groundwaters where one quarter of the world's population lives. However, the large-scale impact of such focused recharge on groundwater quality remains poorly understood. Read More

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Polycyclic aromatic compounds (PAHs, oxygenated PAHs, nitrated PAHs, and azaarenes) in air from four climate zones of China: Occurrence, gas/particle partitioning, and health risks.

Sci Total Environ 2021 May 1;786:147234. Epub 2021 May 1.

Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Reinhard-Baumeister-Platz 1, 76131 Karlsruhe, Germany.

Polycyclic aromatic compounds (PACs) such as polycyclic aromatic hydrocarbons (PAHs) and their derivatives [oxygenated PAHs (OPAHs), nitrated PAHs (NPAHs), and azaarenes (AZAs)] are toxic and ubiquitous air pollutants. In this study, the concentrations of these PACs were determined in air obtained in spring and autumn of 2012 from urban and rural areas of the Tibetan Plateau, temperate, subtropical, and tropical climate zones in China. Average concentrations (gaseous + particulate) of ∑29PAHs, ∑15OPAHs, ∑11NPAHs, and ∑4AZAs were 928 ± 658, 54 ± 45, 5. Read More

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Effects of air pollution on mortality of patients with chronic kidney disease: A large observational cohort study.

Sci Total Environ 2021 Apr 30;786:147471. Epub 2021 Apr 30.

Institute of Health and Environment, Seoul National University, South Korea; Department of Public Health Science, School of Public Health, Seoul National University, South Korea. Electronic address:

Due to industrialization, the burden of diseases associated with air pollution is increasing. Although the risk associated with air pollution in the general population has been actively investigated, few studies have been conducted on the effects of exposure to air pollution in patients with chronic kidney disease (CKD) in East Asia. A total of 29,602 patients with CKD in Seoul participated in a retrospective cohort at three medical centers. Read More

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Detection of anticancer drugs in wastewater effluents: Grab versus passive sampling.

Sci Total Environ 2021 Apr 30;786:147477. Epub 2021 Apr 30.

iBET - Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal; Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal. Electronic address:

The occurrence of six anticancer drugs was evaluated in wastewater effluents. Several grab samples from wastewater effluent were collected throughout a year. Capecitabine, cyclophosphamide and ifosfamide were detected at concentrations ranging from 8 to 46 ng·L. Read More

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Quantifying the high resolution seasonal emission of air pollutants from crop residue burning in India.

Environ Pollut 2021 Apr 24;286:117165. Epub 2021 Apr 24.

Department of Earth and Atmospheric Sciences, National Institute of Technology Rourkela, India.

Biomass burning, a recurring global phenomenon is also considered an environmental menace, making headlines every year in India with onset of autumn months. Agriculture is demographically the broadest economic sector and plays a significant role in the overall socio-economic fabric of India. Hence, disposal of crop residue is done mainly by burning leading to deterioration of air quality. Read More

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Associations of accumulated selected persistent organic pollutants in adipose tissue with insulin sensitivity and risk of incident type-2 diabetes.

Environ Int 2021 May 7;155:106607. Epub 2021 May 7.

Universidad de Granada. Departamento de Medicina Preventiva y Salud Pública, Granada, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain; Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain. Electronic address:

Continuous exposure to low doses of persistent organic pollutant (POPs), such as those occurring in the general population, might contribute to the burden of type 2 diabetes mellitus (T2DM). However, evidences from longitudinal studies are scarce. We aimed to explore the associations of accumulated POP exposure with the development of T2DM by means of 1) longitudinal associations with the 16-year incidence of the disease, and 2) complementary cross-sectional analyses with markers of glucose homeostasis at recruitment. Read More

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Effect of microplastics on aquatic biota: A hormetic perspective.

Environ Pollut 2021 Apr 30;285:117206. Epub 2021 Apr 30.

CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences (CAS), Qingdao, 266071, PR China. Electronic address:

As emerging pollutants, microplastics (MPs) have been found globally in various freshwater and marine matrices. This study recompiled 270 endpoints of 3765 individuals from 43 publications, reporting the onset of enhanced biological performance and reduced oxidative stress biomarkers induced by MPs in aquatic organisms at environmentally relevant concentrations (≤1 mg/L, median = 0.1 mg/L). Read More

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Combination of the endophytic manganese-oxidizing bacterium Pantoea eucrina SS01 and biogenic Mn oxides: An efficient and sustainable complex in degradation and detoxification of malachite green.

Chemosphere 2021 May 4;280:130785. Epub 2021 May 4.

College of Life Science, Shandong Normal University, Jinan, 250014, PR China. Electronic address:

Recently, Mn oxides (MnOxs) have been attracting considerable interest in the oxidation of organic pollutants. However, the reduction of MnOx in these reactions leads to the deactivation of the catalyst, which must be frequently regenerated. We evaluated the application of a manganese-oxidizing bacterium (MOB) and MnOx in removing toxic dyes. Read More

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Quantum parameter analysis of the adsorption mechanism by freshly formed ferric hydroxide for synthetic dye and antibiotic wastewaters.

Chemosphere 2021 Apr 16;280:130577. Epub 2021 Apr 16.

School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, PR China. Electronic address:

In this study, the adsorption effect by freshly formed ferric hydroxide (FFFH) for the removal of 47 synthetic dye and antibiotic wastewaters under different pH conditions (i.e., pH = 4, 7, and 10) was investigated. Read More

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Shift in skin microbiota and immune functions of zebrafish after combined exposure to perfluorobutanesulfonate and probiotic Lactobacillus rhamnosus.

Ecotoxicol Environ Saf 2021 May 7;218:112310. Epub 2021 May 7.

State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. Electronic address:

Dysbiosis of fish skin microbiome and immunity by environmental pollutants are rarely studied in toxicological research in spite of their importance for fish health. In the present study, adult zebrafish were exposed to 0 and 10 μg/L of perfluorobutanesulfonate (PFBS) for 40 days, with or without the supplementation of probiotic Lactobacillus rhamnosus, with objectives to explore the interaction between PFBS pollutant and probiotic bacteria on skin mucosal microbiota and immune response. Amplicon sequencing analysis found that PFBS alone significantly disturbed the microbial community composition and abundance on the skin, favoring the growth of stress-tolerant bacteria (e. Read More

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Mechanisms of the synergistic lung tumorigenic effect of arsenic and benzo(a)pyrene combined- exposure.

Authors:
Zhishan Wang

Semin Cancer Biol 2021 May 7. Epub 2021 May 7.

Division of Cancer Biology, Department of Medicine, MetroHealth Medical Center, Case Western Reserve University School of Medicine, Cleveland, OH, 44109, USA. Electronic address:

Humans are often exposed to mixtures of environmental pollutants especially environmental chemical carcinogens, representing a significant environmental health issue. However, our understanding on the carcinogenic effects and mechanisms of environmental carcinogen mixture exposures is limited and mostly relies on the findings from studying individual chemical carcinogens. Both arsenic and benzo(a)pyrene (BaP) are among the most common environmental carcinogens causing lung cancer and other types of cancer in humans. Read More

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How mobility restrictions policy and atmospheric conditions impacted air quality in the State of São Paulo during the COVID-19 outbreak.

Environ Res 2021 May 7:111255. Epub 2021 May 7.

Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, Av. Pres. Antônio Carlos, 6627, 31270-901, Belo Horizonte, Brazil; Post Graduation Program on Environmental Engineering - Federal University of Espírito Santo, Av. Fernando Ferrari, 514, 29075-910, Vitória, Brazil. Electronic address:

Mobility restrictions are among actions to prevent the spread of the COVID-19 pandemic and have been pointed as reasons for improving air quality, especially in large cities. However, it is crucial to assess the impact of atmospheric conditions on air quality and air pollutant dispersion in the face of the potential variability of all sources. In this study, the impact of mobility restrictions on the air quality was analyzed for the most populous Brazilian State, São Paulo, severely impacted by COVID-19. Read More

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