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https://www.readbyqxmd.com/read/28924862/personal-inhalation-exposure-to-polycyclic-aromatic-hydrocarbons-and-their-nitro-derivatives-in-rural-residents-in-northern-thailand
#1
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/28923752/anthropogenic-and-geogenic-mass-input-of-trace-elements-to-moss-and-natural-surface-soil-in-norway
#2
Erik R Christensen, Eiliv Steinnes, Ola Anfin Eggen
Data sets for concentrations of up to 22 elements including Pb, Cd, Ag, As, and Hg and several rare earth elements (REEs) in moss and surface soil from all over mainland Norway are analyzed by positive matrix factorization (PMF) and principal component analysis (PCA) with centered log-ratio transformation. Moss and soil samples collected in 2010 and 2005, respectively, show both a distinct long-range atmospheric transport PMF factor including a dominant Pb loading along with smaller loadings of Mo, Cd, Sb, and As, and a geogenic factor dominated by Ce, La, and Y...
September 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28920759/spatial-distribution-of-polycyclic-aromatic-hydrocarbon-and-polychlorinated-biphenyl-sources-in-the-nakdong-river-estuary-south-korea
#3
Jun H Lee, Han J Woo, Kap S Jeong, Jeong W Kang, Jae U Choi, Eun J Jeong, Kap S Park, Dong H Lee
Our research team investigated the elemental composition and the presence of various toxic organic compounds, such as polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs), in estuary surface sediments to trace the spatial distribution of the sources of pollution deposited in Nakdong River, Busan, South Korea. The spatial patterns of elemental composition and toxic organic compounds were determined from the measurements of total organic carbon (TOC), total nitrogen, total sulfur, PAHs, and PCBs...
September 18, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28920689/a-320-year-ice-core-record-of-atmospheric-hg-pollution-in-the-altai-central-asia
#4
Stella Eyrikh, Anja Eichler, Leonhard Tobler, Natalia Malygina, Tatyana Papina, Margit Schwikowski
Anthropogenic emissions of the toxic heavy metal mercury (Hg) have substantially increased atmospheric Hg levels during the 20th century compared to pre-industrial times. However, on a regional scale, atmospheric Hg concentration or deposition trends vary to such an extent during the industrial period that the consequences of recent Asian emissions on atmospheric Hg levels are still unclear. Here we present a 320-year Hg deposition history for Central Asia, based on a continuous high-resolution ice-core Hg record from the Belukha glacier in the Siberian Altai, covering the time period 1680-2001...
September 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28918553/characteristic-of-microplastics-in-the-atmospheric-fallout-from-dongguan-city-china-preliminary-research-and-first-evidence
#5
Liqi Cai, Jundong Wang, Jinping Peng, Zhi Tan, Zhiwei Zhan, Xiangling Tan, Qiuqiang Chen
Microplastic pollution has exhibited a global distribution, including seas, lakes, rivers, and terrestrial environment in recent years. However, little attention was paid on the atmospheric environment, though the fact that plastic debris can escape as wind-blown debris was previously reported. Thus, characteristics of microplastics in the atmospheric fallout from Dongguan city were preliminarily studied. Microplastics of three different polymers, i.e., PE, PP, and PS, were identified. Diverse shapes of microplastics including fiber, foam, fragment, and film were found, and fiber was the dominant shape of the microplastics...
September 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28917172/reconstruction-of-atmospheric-trace-metals-pollution-in-southwest-china-using-sediments-from-a-large-and-deep-alpine-lake-historical-trends-sources-and-sediment-focusing
#6
Qi Lin, Enfeng Liu, Enlou Zhang, Bibhash Nath, Ji Shen, Hezhong Yuan, Rong Wang
Atmospheric pollution, one of the leading environmental problems in South and East Asia, and its impact on the terrestrial environmental quality remain poorly understood particularly in alpine areas where both historical and present-day mining and smelting operations might leave an imprint. Here, we reconstructed atmospheric trace metals pollution during the past century using core sediments from a large and deep alpine lake in Southwest China. The implication of in lake and/or in watershed sediment focusing in pollution quantification is discussed by analyzing 15 sediment cores...
September 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28913550/oxidative-damage-and-genetic-toxicity-induced-by-dbp-in-earthworms-eisenia-fetida
#7
Guanying Wang, Jun Wang, Lusheng Zhu, Jinhua Wang, Hengzhou Li, Yizhang Zhang, Wenjun Liu, Jianpeng Gao
Di-n-butyl phthalate (DBP) is one of the most ubiquitous plasticizers used worldwide. However, it has negatives effects on the soil, water, atmosphere, and other environmental media and can cause serious pollution. According to the artificial soil test and previous studies, this study was conducted to evaluate the toxicity of earthworms induced by DBP at different concentrations (0, 0.1, 1.0, 10, and 50 mg kg(-1)) on the 7th, 14th, 21st, and 28th days of exposure. The variations in the antioxidant activities of enzymes, such as catalase (CAT), peroxidase (POD), superoxide dismutase (SOD), and glutathione-S-transferase (GST), in the amounts of malondialdehyde (MDA) and reactive oxygen species (ROS) and in the amount of DNA damage were measured to evaluate the toxic impact of DBP in earthworms...
September 14, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28912354/well-below-2-%C3%A2-c-mitigation-strategies-for-avoiding-dangerous-to-catastrophic-climate-changes
#8
Yangyang Xu, Veerabhadran Ramanathan
The historic Paris Agreement calls for limiting global temperature rise to "well below 2 °C." Because of uncertainties in emission scenarios, climate, and carbon cycle feedback, we interpret the Paris Agreement in terms of three climate risk categories and bring in considerations of low-probability (5%) high-impact (LPHI) warming in addition to the central (∼50% probability) value. The current risk category of dangerous warming is extended to more categories, which are defined by us here as follows: >1...
September 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28911793/passive-air-sampling-of-polybrominated-diphenyl-ethers-in-new-delhi-kolkata-mumbai-and-chennai-levels-homologous-profiling-and-source-apportionment
#9
Paromita Chakraborty, Gan Zhang, Hairong Cheng, Prithiviraj Balasubramanian, Jun Li, Kevin C Jones
Several studies in the recent past reported new sources for industrial persistent organic pollutants (POPs) from metropolitan cities of India. To fill the data gap for atmospheric polybrominated diphenyl ethers (PBDEs), polyurethane foam disk passive air sampling (PUF-PAS) was conducted along urban-suburban-rural transects in four quadrilateral cities viz., New Delhi, Kolkata, Mumbai and Chennai from northern, eastern, western and southern India respectively. Average concentration of Σ8PBDEs in pg/m(3) for New Delhi, Kolkata, Mumbai and Chennai were 198, 135, 264 and 144 respectively...
September 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28910962/pharmaceuticals-and-other-anthropogenic-chemicals-in-atmospheric-particulates-and-precipitation
#10
Mark L Ferrey, M Coreen Hamilton, Will J Backe, Kurt E Anderson
Air and precipitation samples were analyzed by liquid chromatography tandem mass spectrometry (LC-MS/MS) and gas chromatography mass spectrometry (GC-MS) for pharmaceuticals, personal care products, and other commercial chemicals within the St. Paul/Minneapolis metropolitan area of Minnesota, U.S. Of the 126 chemicals analyzed, 17 were detected at least once. Bisphenol A, N,N-diethyl-meta-toluamide (DEET), and cocaine were the most frequently detected; their maximum concentrations in snow were 3.80, 9.49, and 0...
September 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28910626/long-term-modelling-of-fly-ash-and-radionuclide-emissions-as-well-as-deposition-fluxes-due-to-the-operation-of-large-oil-shale-fired-power-plants
#11
Taavi Vaasma, Marko Kaasik, Jüri Loosaar, Madis Kiisk, Alan H Tkaczyk
Two of the world's largest oil shale-fired power plants (PPs) in Estonia have been operational over 40 years, emitting various pollutants, such as fly ash, SOx, NOx, heavy metals, volatile organic compounds as well as radionuclides to the environment. The emissions from these PPs have varied significantly during this period, with the maximum during the 1970s and 1980s. The oil shale burned in the PPs contains naturally occurring radionuclides from the (238)U and (232)Th decay series as well as (40)K. These radionuclides become enriched in fly ash fractions (up to 10 times), especially in the fine fly ash escaping the purification system...
September 11, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28900265/urban-heat-island-impacted-by-fine-particles-in-nanjing-china
#12
Hao Wu, Tijian Wang, Nicole Riemer, Pulong Chen, Mengmeng Li, Shu Li
Atmospheric aerosol particles (especially particles with aerodynamic diameters equal to or less than 2.5 μm, called PM2.5) can affect the surface energy balance and atmospheric heating rates and thus may impact the intensity of urban heat islands. In this paper, the effect of fine particles on the urban heat island intensity in Nanjing was investigated via the analysis of observational data and numerical modelling. The observations showed that higher PM2.5 concentrations over the urban area corresponded to lower urban heat island (UHI) intensities, especially during the day...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28898957/persistent-organic-pollutants-in-krill-from-the-bellingshausen-south-scotia-and-weddell-seas
#13
Cristóbal J Galbán-Malagón, Gema Hernán, Esteban Abad, Jordi Dachs
Persistent organic pollutants (POPs) reach Antarctica through atmospheric transport, oceanic currents, and to minor extent, by migratory animals. The Southern Ocean is a net sink for many POPs, with a key contribution of the settling fluxes of POPs bound to organic matter (biological pump). However, little is known about POP transfer through the food web in the Southern Ocean and Antarctic waters, where krill is an important ecological node. In this study, we assessed the occurrence of polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs), polybrominated diphenyl ethers (PBDEs), and polychlorinated biphenyls (PCBs) in Antarctic krill (Euphausia superba) from the Bellingshausen, South Scotia and Weddell Seas around the Antarctic Peninsula...
September 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28898948/long-term-characteristics-of-satellite-based-pm2-5-over-east-china
#14
Qianshan He, Fuhai Geng, Chengcai Li, Shiqi Yang, Yanyu Wang, Haizhen Mu, Guangqiang Zhou, Xiaobo Liu, Wei Gao, Tiantao Cheng, Zheng Wu
With the explosive economic development of China over the past few decades, air pollution has become a serious environmental problem and has attracted increasing global concern. Using satellite-based PM2.5 data from 2000 to 2015, we found that the temporal-spatial variation of PM2.5 in East China is characterized by high concentrations in the northern part and low concentrations in the southern part of East China, and by being seasonally high in autumn and winter but low in spring and summer. We also found that the regional average PM2...
September 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28898582/spatio-temporal-distribution-and-alpine-behavior-of-short-chain-chlorinated-paraffins-in-air-at-shergyla-mountain-and-lhasa-on-the-tibetan-plateau-of-china
#15
Jing Wu, Wei Gao, Yong Liang, Jianjie Fu, Yan Gao, Yawei Wang, Guibin Jiang
Pristine high-altitude mountains are ideal areas for studying the potential mechanism behind the long-range transport and environmental behavior of persistent organic pollutants (POPs) in remote areas. Short chain chlorinated paraffins (SCCPs) are the most complex halogenated contaminants in the environment, and have attracted extensive worldwide interest in recent years. In this study, the spatio-temporal concentrations and distributions of SCCPs in air collected from Shergyla Mountain (located in the southeast of the Tibetan Plateau) and Lhasa were investigated during 2012-2015...
September 12, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28895888/health-effects-of-ambient-air-pollution-in-developing-countries
#16
REVIEW
Pier Mannuccio Mannucci, Massimo Franchini
The deleterious effects of ambient air pollution on human health have been consistently documented by many epidemiologic studies worldwide, and it has been calculated that globally at least seven million deaths are annually attributable to the effects of air pollution. The major air pollutants emitted into the atmosphere by a number of natural processes and human activities include nitrogen oxides, volatile organic compounds, and particulate matter. In addition to the poor ambient air quality, there is increasing evidence that indoor air pollution also poses a serious threat to human health, especially in low-income countries that still use biomass fuels as an energy resource...
September 12, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28892860/fine-particles-at-a-background-site-in-central-france-chemical-compositions-seasonal-variations-and-pollution-events
#17
Lin He, Hui Chen, Jérôme Rangognio, Abderrazak Yahyaoui, Patrice Colin, Jinhe Wang, Véronique Daële, Abdelwahid Mellouki
To expand our knowledge of regional fine particles in Central France (Centre-Val de Loire region), a field observation study of PM2.5 was carried out at Verneuil site (46.81467N, 2.61012E, 180m.a.s.l.) from 2011 to 2014. The mass concentrations of water-soluble inorganic ions (WSIIs), organic carbon (OC), elemental carbon (EC) and biomass burning tracer (Levoglucosan) in PM2.5 were measured. Annual average PM2.5 mass concentrations were 11.8, 9.5, 12.6 and 10.2μg·m(-3) in 2011, 2012, 2013 and 2014, respectively, three of four higher than the WHO guideline of 10μg·m(-3)...
September 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28892110/hexabromocyclododecane-and-tetrabromobisphenol-a-in-tree-bark-from-different-functional-areas-of-shanghai-china-levels-and-spatial-distributions
#18
Tao Han, Ming-Hong Wu, Chao Zang, Rui Sun, Liang Tang, Ning Liu, Jian-Qiu Lei, Hai-Yang Shao, Jian-Zhong Gu, Gang Xu
The concentrations and spatial distributions of hexabromocyclododecane (HBCDD) and tetrabromobisphenol A (TBBPA) were measured in tree bark from different functional areas of Shanghai. ΣHBCDD (sum of α-, β-, and γ-HBCDD) concentrations ranged from 1.2 × 10(2) to 6.6 × 10(3) ng g(-1) lw (median 5.7 × 10(2) ng g(-1) lw) and TBBPA concentrations ranged from 48 to 7.2 × 10(4) ng g(-1) lw (median 2.8 × 10(2) ng g(-1) lw). The concentrations of ΣHBCDD and TBBPA all followed the order of industrial areas > commercial areas > residential areas...
September 11, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28891455/epigenetic-biomarkers-for-risk-assessment-of-particulate-matter-associated-lung-cancer
#19
Arpit Bhargava, Neha Bunkar, Aniket Aglawe, Kailash Chand Pandey, Rajnarayan Tiwari, Koel Chaudhury, Irina Yu Goryacheva, Pradyumna Kumar Mishra
BACKGROUND: Particulate matter directly emitted into the air by sources such as combustion processes and windblown dust, or formed in the atmosphere by transformation of emitted gases are the major contributors to air pollution that triggers a diverse array of human pathologies including lung cancer. The mortality in lung cancer is usually high as the disease is not symptomatic at its early treatable stage. Moreover, available methods for screening are costly and mainly rely on imaging techniques which lack sufficient sensitivity and specificity...
September 10, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28889991/use-of-dispersion-modelling-for-environmental-impact-assessment-of-biological-air-pollution-from-composting-progress-problems-and-prospects
#20
REVIEW
P Douglas, E T Hayes, W B Williams, S F Tyrrel, R P Kinnersley, K Walsh, M O'Driscoll, P J Longhurst, S J T Pollard, G H Drew
With the increase in composting asa sustainable waste management option, biological air pollution (bioaerosols) from composting facilities have become a cause of increasing concern due to their potential health impacts. Estimating community exposure to bioaerosols is problematic due to limitations in current monitoring methods. Atmospheric dispersion modelling can be used to estimate exposure concentrations, however several issues arise from the lack of appropriate bioaerosol data to use as inputs into models, and the complexity of the emission sources at composting facilities...
September 7, 2017: Waste Management
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