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Archives of Environmental Contamination and Toxicology

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https://www.readbyqxmd.com/read/30232531/global-monitoring-of-persistent-organic-pollutants-pops-using-seabird-preen-gland-oil
#1
Rei Yamashita, Hideshige Takada, Arisa Nakazawa, Akinori Takahashi, Motohiro Ito, Takashi Yamamoto, Yuuki Y Watanabe, Nobuo Kokubun, Katsufumi Sato, Sarah Wanless, Francis Daunt, David Hyrenbach, Michelle Hester, Tomohiro Deguchi, Bungo Nishizawa, Akiko Shoji, Yutaka Watanuki
Situated at high positions on marine food webs, seabirds accumulate high concentrations of persistent organic pollutants (POPs), such as polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane and its metabolites (DDTs), and hexachlorocyclohexanes (HCHs). Our previous studies proposed the usefulness of seabirds preen gland oil as a nondestructive biomonitoring tool. The present study applied this approach to 154 adult birds of 24 species collected from 11 locations during 2005-2016 to demonstrate the utility of preen gland oil as a tool for global monitoring POPs, i...
September 19, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30229368/distribution-and-bioavailability-of-trace-metals-in-shallow-sediments-from-grand-lake-oklahoma
#2
Shane Morrison, Steve Nikolai, Darrell Townsend, Jason Belden
The Tri-State Mining District (TSMD) is a historic mining area containing the Tar Creek superfund site and is the source for sediment-bound metals in Grand Lake. Despite elevated concentrations of cadmium, lead, and zinc, no evidence of sediment toxicity has been observed during previous investigations; however, these studies were limited to lake transects with mostly deep-water sediments. The purpose of this study was to assess whether TSMD-specific sediment toxicity thresholds (STTs), developed for small streams and tributaries draining the TSMD, are predictive of biological effects within the greater lake body...
September 18, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30218120/assessment-of-fish-embryo-survival-and-growth-by-in-situ-incubation-in-acidic-boreal-streams-undergoing-biomining-effluents
#3
Hanna E Arola, Anna K Karjalainen, Jukka T Syrjänen, Maija Hannula, Ari Väisänen, Juha Karjalainen
The applicability of an in situ incubation method in monitoring the effects of metal mining on early life stages of fish was evaluated by investigating the impacts of a biomining technology utilizing mine on the mortality, growth, and yolk consumption of brown trout (Salmo trutta) and whitefish (Coregonus lavaretus) embryos. Newly fertilized eggs were incubated from autumn 2014 to spring 2015 in six streams under the influence of the mine located in North-Eastern Finland and in six reference streams. Although the impacted streams clearly had elevated concentrations of several metals and sulfate, the embryonic mortality of the two species did not differ between the impacted and the reference streams...
September 14, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30182175/comment-on-estimating-the-bioconcentration-factors-of-hydrophobic-organic-compounds-from-biotransformation-rates-using-rainbow-trout-hepatocytes-by-trowell-et-al-in-aect
#4
Kai-Uwe Goss
No abstract text is available yet for this article.
September 4, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30178132/the-chronic-effects-of-copper-and-cadmium-on-life-history-traits-across-cladocera-species-a-meta-analysis
#5
Shlair A Sadeq, Andrew P Beckerman
The effect of sublethal concentrations of heavy metals on cladoceran growth and reproduction is a cornerstone of modern ecotoxicology. However, the literature contains assays across numerous concentrations, on numerous species and genotypes, and conditions are far from consistent. We undertook a systematic review of the sublethal effects of copper and cadmium concentrations on Cladocera spp. life history (reproduction, maturation age, and somatic growth rate). Using meta-analysis, we tested the hypothesis that the effects of increasing Cu and Cd concentrations on traits may vary by species...
September 3, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30178131/prediction-of-biodegradability-for-polycyclic-aromatic-hydrocarbons-using-various-in-silico-modeling-methods
#6
Gong Cheng, Liming Sun, Jie Fu
Polycyclic aromatic hydrocarbons (PAHs) have attracted great concern as global environmental pollutants. In this work, the quantitative structure-biodegradability relationship (QSBR) study has been done to predict the biodegradability of PAHs and develop the correlation between the biodegradability and the molecular structures. The structural chemistry and quantum chemistry descriptors were used to represent molecular structures. Three in silico modeling methods, i.e., multiple linear regression (MLR), radial basis function neural network, and back-propagation artificial neural network (BPANN), are utilized to construct the linear and nonlinear prediction models and provide some insights into the structural characteristics affecting the biodegradability of PAHs...
September 3, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30151657/bioaccumulation-of-highly-hydrophobic-chemicals-by-lumbriculus-variegatus
#7
Lawrence P Burkhard, Tylor Lahren, Terry L Highland, James R Hockett, David R Mount, Teresa J Norberg-King
Bioaccumulation of highly hydrophobic chemicals (log KOW  > 8) from contaminated sediments by Lumbriculus variegatus has been studied for relatively few chemicals, and the measured and model predicted biota-sediment accumulation factors (BSAFs) can differ by orders of magnitude. In the current study, sediment bioaccumulation tests with L. variegatus were performed on sediments dosed with chemicals having a wide range of predicted n-octanol/water partition coefficients (KOW ; 106 -1018 ), including some higher than most highly hydrophobic chemicals studied to date...
August 27, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30116839/suitability-of-wild-boar-sus-scrofa-as-a-bioindicator-for-environmental-pollution-with-perfluorooctanoic-acid-pfoa-and-perfluorooctanesulfonic-acid-pfos
#8
J Kowalczyk, J Numata, B Zimmermann, R Klinger, F Habedank, P Just, H Schafft, M Lahrssen-Wiederholt
Wildlife species, such as roe deer, moose, brown hare, wild boar, etc., are known to accumulate persistent environmental contaminants and thus are useful as bioindicators for environmental pollution. Wild boars become exposed to perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) from flora, fauna, water, and soil. The main exposure pathway to PFOA and PFOS is assumed to be the oral intake. From studies in domestic pigs (belonging to the same species Sus scrofa), it has been established that the oral exposure results in the liver accumulation of PFOA and PFOS...
August 16, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30056617/a-comparison-of-child-blood-lead-levels-in-urban-and-rural-children-ages-5-12-years-living-in-the-border-region-of-el-paso-texas
#9
Juan Alvarez, Michelle Del Rio, Tania Mayorga, Salvador Dominguez, Mayra Gisel Flores-Montoya, Christina Sobin
Lead exposure is an unresolved pediatric health risk and disproportionately affects children in lower-income neighborhoods. Residences with children younger than age 5 years are the focus of mitigation policies; however, studies have shown that older children between the ages of 5 and 12 years also are at risk of central nervous system effects. Whether historically contaminated neighborhoods present ongoing risk to older children also is of concern. This study compared the blood lead levels (BLLs) of older children from an historically contaminated urban neighborhood to those of demographically matched children from a nearby rural locale and predicted significantly higher BLLs in the urban children...
July 28, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30027306/mercury-bioaccumulation-in-two-species-of-insectivorous-bats-from-urban-china-influence-of-species-age-and-land-use-type
#10
Laura M Heiker, Rick A Adams, Claire V Ramos
Mercury (Hg) is a widespread, toxic pollutant, and China is the world's largest emitter. We investigated Hg concentrations of fur in Japanese pipistrelles (Pipistrellus abramus) and Chinese noctules (Nyctalus plancyi) from Chengdu, Sichuan Province, in relation to degree of urbanization. Bats were mist-netted in June and July 2013, and the fur was analyzed via atomic absorption. Statistical comparisons were made between ages, species, and site types with unpaired t tests and between Hg concentration and body condition with Spearman's rank correlations...
July 19, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30008014/arsenic-and-trace-metals-in-three-west-african-rivers-concentrations-partitioning-and-distribution-in-particle-size-fractions
#11
Ahbeauriet Ahmed Ouattara, Koffi Marcellin Yao, Maley Pacome Soro, Thomas Diaco, Albert Trokourey
Despite increasing mining activities, and fertilizer and pesticide use in agriculture, little information is available on the status of metal(loid) contamination in rivers in West Africa. Sixty water samples were collected from three significant rivers (the Bandama, Comoé, and Bia Rivers) in Côte d'Ivoire, the world's top cocoa producer, to examine As, Pb, Cu, Fe, Cd, and Zn concentrations, partitioning, and distribution in suspended particle-size fractions. The results showed higher total metal(loid) concentrations during the dry and flood seasons than during the rainy season...
July 14, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30003277/nonoccupational-exposure-of-agricultural-area-residents-to-pesticides-pesticide-accumulation-and-evaluation-of-genotoxicity
#12
Zeynep Banu Doğanlar, Oğuzhan Doğanlar, Hilmi Tozkir, Fulya Dilek Gökalp, Ayten Doğan, Ferah Yamaç, Orhan Onur Aşkın, Ümmühan Ersin Aktaş
Although many studies related the toxic effects of pesticides on agricultural workers, little research has been done about agricultural area residents. The purpose of this work was to monitor the presence of pesticides, as well as their genotoxic and cytotoxic potential, in humans with blood samples collected from control and intensive agricultural areas in the Thrace region. Pesticide accumulations were determined by LC-MS/MS. Cytotoxicity and genotoxicity were analyzed by comet assay, and the effect of pesticide accumulation on oxidative stress, DNA repair, and molecular chaperone response were analyzed by qRT-PCR assays in the human blood samples...
July 12, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29974180/clinical-symptoms-neurological-signs-and-electrophysiological-findings-in-surviving-residents-with-probable-arsenic-exposure-in-toroku-japan
#13
Nobuyuki Ishii, Hitoshi Mochizuki, Yuka Ebihara, Kazutaka Shiomi, Masamitsu Nakazato
Chronic arsenic intoxication is known to cause multisystem impairment and is still a major threat to public health in many countries. In Toroku, a small village in Japan, arsenic mines operated from 1920 to 1962, and residents suffered serious sequelae of arsenic intoxication. We have performed annual medical examinations of these residents since 1974, allowing us to characterize participants' long-term health following their last exposure to arsenic. The participants could not be described as having "chronic arsenic intoxication," because their blood arsenic levels were not measured...
July 4, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30097697/the-response-of-neotropical-fish-species-brazil-on-the-water-pollution-metal-bioaccumulation-and-genotoxicity
#14
Lucilene Finoto Viana, Yzel Rondon Súarez, Claudia Andrea Lima Cardoso, Bruno do Amaral Crispim, Deborah Navit de Carvalho Cavalcante, Alexeia Barufatti Grisolia, Sidnei Eduardo Lima-Junior
The streams and rivers of the Upper Paraná River Basin have been seriously affected by impacts of high population density around the basin area. Fishes are widely used as models to assess the health of aquatic ecosystems, being considered as bioindicators of environmental pollution. In this context, our objective was to assess the potential genotoxic and mutagenic effects of the polluted water in three native fish species (Astyanax lacustris, Hypostomus ancistroides, and Rhamdia quelen) from Tarumã Microbasin, Upper Paraná River, Brazil...
October 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30069574/a-reliable-method-to-determine-monomethylmercury-and-monoethylmercury-simultaneously-in-aqueous-samples-by-gc-cvafs-after-distillation
#15
Ming Liu, Zhiqiang Gao, Laiguo Chen, Wei Zhao, Qing Lu, Jian Yang, Lu Ren, Zhencheng Xu
A reliable method for simultaneous determination of monomethylmercury (MeHg) and monoethylmercury (EtHg) in water by gas chromatography with cold vapor atomic fluorescence spectrometry was developed and validated. The experimental conditions, including derivatisation pH, distillation, and complexing agents, were optimized in detail. The absolute detection limits (3σ) were 0.007 ng/L as Hg for MeHg and 0.004 ng/L as Hg for EtHg. The relative standard deviation values (n = 6) for 0.1 ng/L of MeHg and EtHg were 2...
October 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30027305/bioaccumulation-and-cycling-of-polycyclic-aromatic-hydrocarbons-pahs-in-typical-mangrove-wetlands-of-hainan-island-south-china
#16
Yao-Wen Qiu, Han-Lin Qiu, Jun Li, Gan Zhang
Mangrove wetlands are important coastal ecosystems in tropical and subtropical regions, and mangrove sediments and tissues often are the pollutant sinks due to their high organic matter contents. Polycyclic aromatic hydrocarbons (PAHs) in the mangrove sediments and tissues of nine species from three typical mangrove wetlands of Hainan Island were studied. The average concentration of PAHs in all mangrove tissues was 403 ng g-1  dw, with PAHs concentrations in leaf, branch, root, and fruit of 566, 335, 314, and 353 ng g-1  dw, respectively...
October 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30022226/influence-of-road-paving-on-particulate-matter-emission-and-fingerprinting-of-elements-of-road-dust
#17
Anil Kumar, Suresh Pandian Elumalai
Most assessments of road dust have focused largely on the resuspension of materials from the paved road while the contribution from unpaved shoulder to particulate matter is poorly understood. We evaluated the role of unpaved road shoulders in the contribution of particulate matter emitted by analyzing elements in the road dust. We collected road dust samples and employed US-EPA empirical equations. The results of TSP emission reveal that unpaved shoulder adjacent to paved roads (43.1-29.9%) is a potential emitter than that at roundabouts (27%)...
October 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29802419/characterization-and-risk-analysis-of-metals-associated-with-urban-dust-in-rawang-malaysia
#18
Sarva Mangala Praveena
This study was designed to determine the particle size distribution and develop road dust index combining source and transport factors involving road dust for dust pollution quantification in Rawang. Principal component analysis (PCA) was applied to identify possible sources of potentially toxic elements and spot major pollution areas in Rawang. The health risks (carcinogenic and noncarcinogenic) to adults and children were assessed using the hazard index and total lifetime cancer Risk, respectively. A total of 75 road dust samples were collected and particle sizes (1000, 500, 250, 160, 125 and 63 µm) were determined...
October 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29713743/polychlorinated-biphenyls-in-surface-soil-from-north-east-india-implication-for-sources-apportionment-and-health-risk-assessment
#19
Ningombam Linthoingambi Devi, Ishwar Chandra Yadav, Paromita Chakraborty, Qi Shihua
Although India never manufactured polychlorinated biphenyls (PCBs), evidence suggests the prevalence of PCBs in multi-environmental matrices. Despite the high level of PCBs that has been detailed in the major urban areas of India, little is known about the fate and sources of PCBs in Northeast India (NEI). This motivated us to investigate the contamination level and sources of PCBs in the surface soil. In this study, the environmental concentration and sources of 25 PCBs were investigated in surface soil (n = 60) from three states of NEI (lower Assam, Manipur, and Tripura)...
October 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29713742/assessment-of-heavy-and-trace-metals-in-surface-soil-nearby-an-oil-refinery-saudi-arabia-using-geoaccumulation-and-pollution-indices
#20
Fatimh Alshahri, A El-Taher
The present study deals with the measurement of heavy and trace metals in the soils of Ras Tanura city nearby one of the oldest and largest oil refineries located on Arabian Gulf, eastern Saudi Arabia. Metals were analyzed in 34 surface soil samples using plasma atomic emission spectrometer (ICPE-9820). The result showed that the mean values of the metals concentrations were in the order: Cd > Mo > Tb > Ce > Hf > Eu > Yb > U > Sm > Rb > Cr > Ni > Pb > Sc > Cs > Zn > Lu > Co...
October 2018: Archives of Environmental Contamination and Toxicology
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