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https://www.readbyqxmd.com/read/28927016/china-s-air-quality-and-respiratory-disease-mortality-based-on-the-spatial-panel-model
#1
Qilong Cao, Ying Liang, Xueting Niu
Background: Air pollution has become an important factor restricting China's economic development and has subsequently brought a series of social problems, including the impact of air pollution on the health of residents, which is a topical issue in China. Methods: Taking into account this spatial imbalance, the paper is based on the spatial panel data model PM2.5. Respiratory disease mortality in 31 Chinese provinces from 2004 to 2008 is taken as the main variable to study the spatial effect and impact of air quality and respiratory disease mortality on a large scale...
September 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28926910/removal-of-selected-nitrogenous-heterocyclic-compounds-in-biologically-pretreated-coal-gasification-wastewater-bpcgw-using-the-catalytic-ozonation-process-combined-with-the-two-stage-membrane-bioreactor-mbr
#2
Hao Zhu, Yuxing Han, Wencheng Ma, Hongjun Han, Weiwei Ma
Three identical anoxic-aerobic membrane bioreactors (MBRs) were operated in parallel for 300 consecutive days for raw (R1), ozonated (R2) and catalytic ozonated (R3) biologically pretreated coal gasification wastewater (BPCGW) treatment. The results demonstrated that catalytic ozonation process (COP) applied asa pretreatment remarkably improved the performance of the unsatisfactory single MBR. The overall removal efficiencies of COD, NH3-N and TN in R3 were 92.7%, 95.6% and 80.6%, respectively. In addition, typical nitrogenous heterocyclic compounds (NHCs) of quinoline, pyridine and indole were completely removed in the integrated process...
September 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28926816/phycoremediation-of-landfill-leachate-with-the-chlorophyte-chlamydomonas-sp-sw15arl-and-evaluation-of-toxicity-pre-and-post-treatment
#3
Andrea Paskuliakova, Ted McGowan, Steve Tonry, Nicolas Touzet
Landfill leachate treatment is an ongoing challenge in the wastewater management of existing sanitary landfill sites due to the complex nature of leachates and their heavy pollutant load. There is a continuous interest in treatment biotechnologies with expected added benefits for resource recovery; microalgal bioremediation is seen as promising in this regard. Toxicity reduction of landfill leachate subsequent to phycoremediation was investigated in this study. The treatment eventuated from the growth of the ammonia tolerant microalgal strain Chlamydomonas sp...
September 15, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28926812/isotope-and-microbiome-data-provide-complementary-information-to-identify-natural-nitrate-attenuation-processes-in-groundwater
#4
Elena Hernández-Del Amo, Anna Menció, Frederic Gich, Josep Mas-Pla, Lluís Bañeras
Natural attenuation processes alleviate the impact of fertilization practices on groundwater resources. Therefore, identifying the occurrence of denitrification has become a requirement for water quality management. Several approaches are useful for this purpose, such as isotopic and microbiological methods, each of them providing distinct but complementary information about denitrification reactions, attenuation rates and their occurrence in the aquifer. In this paper, we investigate the contribution of both approaches to describe denitrification in a consolidated rock aquifer (limestone and marls), with a porosity related to fracture networks located in the northeastern sector of the Osona basin (NE Spain)...
September 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28926789/profiling-quinones-in-ambient-air-samples-collected-from-the-athabasca-region-canada
#5
Andrzej Wnorowski, Jean-Pierre Charland
This paper presents new findings on polycyclic aromatic hydrocarbon oxidation products-quinones that were collected in ambient air samples in the proximity of oil sands exploration. Quinones were characterized for their diurnal concentration variability, phase partitioning, and molecular size distribution. Gas-phase (GP) and particle-phase (PM) ambient air samples were collected separately in the summer; a lower quinone content was observed in the PM samples from continuous 24-h sampling than from combined 12-h sampling (day and night)...
September 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28926750/land-cover-and-air-pollution-are-associated-with-asthma-hospitalisations-a-cross-sectional-study
#6
Ian Alcock, Mathew White, Mark Cherrie, Benedict Wheeler, Jonathon Taylor, Rachel McInnes, Eveline Otte Im Kampe, Sotiris Vardoulakis, Christophe Sarran, Ireneous Soyiri, Lora Fleming
BACKGROUND: There is increasing policy interest in the potential for vegetation in urban areas to mitigate harmful effects of air pollution on respiratory health. We aimed to quantify relationships between tree and green space density and asthma-related hospitalisations, and explore how these varied with exposure to background air pollution concentrations. METHODS: Population standardised asthma hospitalisation rates (1997-2012) for 26,455 urban residential areas of England were merged with area-level data on vegetation and background air pollutant concentrations...
September 16, 2017: Environment International
https://www.readbyqxmd.com/read/28926373/exposure-to-mobile-source-air-pollution-in-early-life-and-childhood-asthma-incidence-the-kaiser-air-pollution-and-pediatric-asthma-study
#7
Audrey Flak Pennington, Matthew J Strickland, Mitchel Klein, Xinxin Zhai, Josephine T Bates, Carolyn Drews-Botsch, Craig Hansen, Armistead G Russell, Paige E Tolbert, Lyndsey A Darrow
BACKGROUND: Early-life exposure to traffic-related air pollution exacerbates childhood asthma, but it is unclear what role it plays in asthma development. METHODS: The association between exposure to primary mobile source pollutants during pregnancy and during infancy and asthma incidence by ages 2 through 6 was examined in the Kaiser Air Pollution and Pediatric Asthma Study, a racially diverse birth cohort of 24,608 children born between 2000 and 2010 and insured by Kaiser Permanente Georgia...
September 18, 2017: Epidemiology
https://www.readbyqxmd.com/read/28926342/recent-trends-in-the-industrial-use-and-emission-of-known-and-suspected-carcinogens-in-ontario-canada
#8
Catherine E Slavik, Sheila Kalenge, Paul A Demers
BACKGROUND: In 2010, Ontario, Canada's most populous province, implemented its Toxics Reduction Act, Ontario Regulation 455/09 (TRA), which requires four major manufacturing and mineral processing industry groups that already report releases of pollutants federally to the National Pollutant Release Inventory to additionally track, account and report their use and creation. The TRA was modeled after the Massachusetts Toxics Use Reduction Act of 1989, which has been very successful and reported significant reduction in toxic use and carcinogen release...
September 19, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28926123/isotopic-and-chemical-characteristics-of-mercury-in-organs-and-tissues-of-fish-in-a-mercury-polluted-lake-evidence-for-fractionation-of-mercury-isotopes-by-physiological-processes
#9
Togwell A Jackson
Organs and tissues of whitefish and trout from mercury (Hg)-polluted Lake Ontario were analysed for Hg isotopes, methylmercury (CH3 Hg(+) ), and inorganic Hg to investigate possible mass-dependent fractionation (MDF) and mass-independent fractionation (MIF) of Hg isotopes by physiological processes of the fish. Isotope signatures of different body parts were defined by δ-values of (198) Hg/(202) Hg, (199) Hg/(202) Hg, (200) Hg/(202) Hg, and (201) Hg/(202) Hg ratios and by Δ-values representing effects of MIF on (199) Hg/(202) Hg and (201) Hg/(202) Hg ratios...
September 19, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28925870/pollution-and-sun-exposure-a-deleterious-synergy-mechanisms-and-opportunities-for-skin-protection
#10
Laurent Marrot
Pollutants are highly diverse chemical entities, including gases such as ozone or nitrogen and sulphur oxides and particulate matter of different sizes and with different chemical constituents. PM2.5 is composed of particles that are sometimes about ten nanometres or so in size (ultrafine particles) which can be deposited in lung alveoli, translocated into capillaries and then distributed to all organs through blood circulation. PM2.5 is often associated with toxic chemicals such as heavy metals or polycyclic aromatic hydrocarbons (PAHs) and some photo-reactive PAHs can induce strong oxidative stress under UVA exposure...
September 18, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28925740/household-air-pollution-is-associated-with-altered-cardiac-function-among-women-in-kenya
#11
Anubha Agarwal, Kipruto Kirwa, Melissa N Eliot, Fawaz Alenezi, Diana Menya, Sumeet S Mitter, Eric J Velazquez, Rajesh Vedanthan, Gregory A Wellenius, Gerald S Bloomfield
No abstract text is available yet for this article.
September 19, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28925728/impact-of-consumption-of-repeatedly-heated-cooking-oils-on-the-incidence-of-various-cancers-a-critical-review
#12
Kumar Ganesan, Kumeshini Sukalingam, Baojun Xu
Repeated heating of vegetable oils at high temperatures during cooking is a very common cooking practice. Repeatedly heated cooking oils (RCO) can generate varieties of compounds, including polycyclic aromatic hydrocarbons (PAH), some of which have been reported as carcinogenic. RCO is one of the commonly consumed cooking and frying medium. These RCO consumption and inhalation of cooking fumes can pose a serious health hazard. Taking into account exploratory study, the present review aims to provide the consumption of RCO and its fumes cause the high incidence of genotoxic, mutagenic, tumorogenic and various cancers...
September 19, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28925595/determination-of-crassphage-in-water-samples-and-applicability-for-tracking-human-faecal-pollution
#13
Cristina García-Aljaro, Elisenda Ballesté, Maite Muniesa, Juan Jofre
In recent decades, considerable effort has been devoted to finding microbial source-tracking (MST) markers that are suitable to assess the health risks of faecally polluted waters, with no universal marker reported so far. In this study, the abundance and prevalence of a crAssphage-derived DNA marker in wastewaters of human and animal origins were studied by a new qPCR assay with the ultimate aim of assessing its potential as an MST marker. crAssphage showed up to 10(6) GC/ml in the sewage samples of human origin, in both the total DNA and the viral DNA fraction...
September 19, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28924866/keratinolytic-protease-a-green-biocatalyst-for-leather-industry
#14
REVIEW
Zhen Fang, Yang-Chun Yong, Juan Zhang, Guocheng Du, Jian Chen
Depilation/unhairing is the crucial but heavy pollution process in leather industry. Traditional inorganic sulfide treatment was the most widely used depilation technique in the past decades, which was usually detrimental to leather quality and resulted in serious environmental pollution. Using biocatalysts to substitute inorganic sulfide showed great advantages in environment protection and unhairing efficiency. Keratinolytic protease is one of the excellent biocatalysts to hydrolyze disulfide bond-rich proteins of hair and has little damage to leather...
September 18, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28924862/personal-inhalation-exposure-to-polycyclic-aromatic-hydrocarbons-and-their-nitro-derivatives-in-rural-residents-in-northern-thailand
#15
Walaiporn Orakij, Thaneeya Chetiyanukornkul, Thanyarat Chuesaard, Yuichi Kaganoi, Waka Uozaki, Chiharu Homma, Yaowatat Boongla, Ning Tang, Kazuichi Hayakawa, Akira Toriba
A personal inhalation exposure and cancer risk assessment of rural residents in Lampang, Thailand, was conducted for the first time. This highlighted important factors that may be associated with the highest areal incidence of lung cancer. Personal exposure of rural residents to polycyclic aromatic hydrocarbons (PAHs) and their nitro-derivatives (NPAHs) through inhalation of fine particulate matter (PM2.5) was investigated in addition to stationary air sampling in an urban area. The personal exposure of the subjects to PM2...
September 18, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28924742/characterization-of-pm2-5-in-delhi-role-and-impact-of-secondary-aerosol-burning-of-biomass-and-municipal-solid-waste-and-crustal-matter
#16
Pavan K Nagar, Dhirendra Singh, Mukesh Sharma, Anil Kumar, Viney P Aneja, Mohan P George, Nigam Agarwal, Sheo P Shukla
Delhi is one among the highly air polluted cities in the world. Absence of causal relationship between emitting sources of PM2.5 and their impact has resulted in inadequate actions. This research combines a set of innovative and state-of-the-art analytical techniques to establish relative predominance of PM2.5 sources. Air quality sampling at six sites in summer and winter for 40 days (at each site) showed alarmingly high PM2.5 concentrations (340 ± 135 μg/m(3)). The collected PM2.5 was subjected to chemical speciation including ions, metals, organic and elemental carbons which followed application of chemical mass balance technique for source apportionment...
September 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28924728/a-review-on-the-mechanism-risk-evaluation-and-prevention-of-coal-spontaneous-combustion-in-china
#17
Biao Kong, Zenghua Li, Yongliang Yang, Zhen Liu, Daocheng Yan
In recent years, the ecology, security, and sustainable development of modern mines have become the theme of coal mine development worldwide. However, spontaneous combustion of coal under conditions of oxygen supply and automatic exothermic heating during coal mining lead to coalfield fires. Coal spontaneous combustion (CSC) causes huge economic losses and casualties, with the toxic and harmful gases produced during coal combustion not only polluting the working environment, but also causing great damage to the ecological environment...
September 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28924505/greater-reproductive-investment-but-shorter-lifespan-in-agrosystem-than-in-natural-habitat-toads
#18
Francisco Javier Zamora-Camacho, Mar Comas
Global amphibian decline is due to several factors: habitat loss, anthropization, pollution, emerging diseases, and global warming. Amphibians, with complex life cycles, are particularly susceptible to habitat alterations, and their survival may be impaired in anthropized habitats. Increased mortality is a well-known consequence of anthropization. Life-history theory predicts higher reproductive investment when mortality is increased. In this work, we compared age, body size, and different indicators of reproductive investment, as well as prey availability, in natterjack toads (Epidalea calamita) from agrosystems and adjacent natural pine groves in Southwestern Spain...
2017: PeerJ
https://www.readbyqxmd.com/read/28924500/comparison-of-polybrominated-diphenyl-ethers-pbdes-and-polychlorinated-biphenyls-pcbs-in-the-serum-of-hypothyroxinemic-and-euthyroid-dogs
#19
Grace Lau, Kyla Walter, Philip Kass, Birgit Puschner
OBJECTIVE: To determine the profile of 14 polybrominated diphenyl ethers (PBDEs) and 23 polychlorinated biphenyls (PCBs) in serum of domestic canines and whether this was predictive of thyroid hormone status. SAMPLES: Serum samples were collected from 51 client-owned dogs visiting the University of California Davis William R. Pritchard Veterinary Medical Teaching Hospital during 2012 to 2016 for routine appointments. Fifteen dogs were diagnosed with hypothyroxinemia while 36 were euthyroid...
2017: PeerJ
https://www.readbyqxmd.com/read/28924015/no-mediates-nitrite-sensing-and-adaptation-and-triggers-a-remodeling-of-lipids
#20
Lina J Dolch, Josselin Lupette, Guillaume Tourcier, Mariette Bedhomme, Séverine Collin, Leonardo Magneschi, Melissa Conte, Khawla Seddiki, Christelle Richard, Erwan Corre, Laurent Fourage, Frédéric Laeuffer, Robert Richards, Michael Reith, Fabrice Rébeillé, Juliette Jouhet, Patrick McGinn, Eric Marechal
Nitric oxide (NO) is an intermediate of the nitrogen cycle, an industrial pollutant and a marker of climate change. NO also acts as a gaseous transmitter in a variety of biological processes. The impact of environmental NO needs to be addressed. In diatoms, a dominant phylum in phytoplankton, NO was reported to mediate programmed cell death (PCD) in response to diatom derived polyunsaturated aldehydes. Here, using the Phaeodactylum Pt1 strain, 2E,4E-decadienal supplied in the micromolar concentration range led to a non-specific cell toxicity...
September 18, 2017: Plant Physiology
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