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https://www.readbyqxmd.com/read/29785646/investigating-the-spatial-trends-in-the-level-of-organic-contaminants-in-the-ethiopian-rift-valley-lakes-using-semipermeable-membrane-devices
#1
Ermias Deribe
Organic pollutants in the Ethiopian Rift Valley Lakes are the major factors that contribute to severe environmental problem. SPMDs were deployed for the analysis of selected organic pollutants for 1 month at 2 sites in Lakes Hawassa, Ziway and Koka, Ethiopia. From SPMDs placed in the three lakes, the predominant OCPs were DDT which comprise 67% and followed by endosulfan 23% of the total organochlorine pesticides (OCPs) retrieved. The highest level of OCPs, in general, was found in the SPMDs deployed in Lake Ziway with the mean concentration of 308...
May 21, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29783084/organochlorine-pesticides-ocps-and-polychlorinated-biphenyls-pcbs-in-cyprinidae-fish-towards-hints-of-their-arrangements-using-advanced-classification-methods
#2
Snježana Herceg Romanić, Gordana Vuković, Darija Klinčić, Marijana Matek Sarić, Ivan Župan, Davor Antanasijević, Aleksandar Popović
To tackle the ever-present global concern regarding human exposure to persistent organic pollutants (POPs) via food products, this study strived to indicate associations between organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in lake-fish tissue depending on the species and sampling season. Apart from the monitoring initiatives recommended in the Global Monitoring Plan for POPs, the study discussed 7 OCPs and 18 PCB congeners determined in three Cyprinidae species (rudd, carp, and Prussian carp) from Vransko Lake (Croatia), which are widely domesticated and reared as food fish across Europe and Asia...
May 18, 2018: Environmental Research
https://www.readbyqxmd.com/read/29783051/occurrence-and-potential-human-health-risks-of-semi-volatile-organic-compounds-in-drinking-water-from-cities-along-the-chinese-coastland-of-the-yellow-sea
#3
Zekai Li, Fangyu Chang, Peng Shi, Xun Chen, Feng Yang, Qing Zhou, Yang Pan, Aimin Li
Semi-volatile organic compounds (SVOCs) in drinking water have been considered a severe threat to public health worldwide. However, SVOC contamination and the associated human health risks of the drinking water from cities along tributaries of the Yangtze River and Huaihe River in China have been seldom reported. Here, we focused on the occurrence and distribution of a series of SVOCs, mainly including polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and phthalate esters (PAEs), in drinking water of this region...
May 12, 2018: Chemosphere
https://www.readbyqxmd.com/read/29778940/pcbs-and-organochlorine-pesticides-in-indoor-environments-a-comparison-of-indoor-contamination-in-canada-and-czech-republic
#4
Ondrej Audy, Lisa Melymuk, Marta Venier, Simon Vojta, Jitka Becanova, Kevin Romanak, Martina Vykoukalova, Roman Prokes, Petr Kukucka, Miriam L Diamond, Jana Klanova
Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) are restricted compounds that are ubiquitously detected in the environment, including indoor matrices such as air and residential dust. We report concentrations of PCBs and selected OCPs in indoor air and dust from homes in Canada (23 homes) and Czech Republic (20 homes). Indoor air concentrations of PCBs and OCPs were ∼10 times higher than that outdoors. PCB concentrations of ∼450 ng/m3 were similar in both countries, higher in homes built before the restrictions on PCBs, and had congener profiles consistent with PCB mixtures manufactured or used in each country...
May 3, 2018: Chemosphere
https://www.readbyqxmd.com/read/29778078/an-effective-and-low-cost-carbon-based-clean-up-method-for-pcdd-fs-and-pcbs-analysis-in-food
#5
Kleopatra Kedikoglou, Danae Costopoulou, Irene Vassiliadou, Evangelos Bakeas, Leondios Leondiadis
Sample preparation is of critical importance in dioxin analysis of food and feed samples. It is a complex procedure that includes lipid extraction followed by the application of chromatographic separation techniques, aiming in removing undesirable interferences from the matrix. The separation of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) from polychlorinated biphenyls (PCBs) is achieved by carbon-based materials which should have high fat capacity in order to be suitable for lipid-containing matrices...
May 7, 2018: Chemosphere
https://www.readbyqxmd.com/read/29778059/tracking-pollutants-in-dietary-fish-oil-from-ocean-to-table
#6
Sheng-Xiang Sun, Xue-Ming Hua, Yun-Yun Deng, Yun-Ni Zhang, Jia-Min Li, Zhao Wu, Samwel Mchele Limbu, Da-Sheng Lu, Hao-Wen Yin, Guo-Quan Wang, Rune Waagbø, Frøyland Livar, Mei-Ling Zhang, Zhen-Yu Du
Dietary fish oil used in aquafeed transfers marine pollutants to farmed fish. However, the entire transfer route of marine pollutants in dietary fish oil from ocean to table fish has not been tracked quantitatively. To track the entire transfer route of marine pollutants from wild fish to farmed fish through dietary fish oil and evaluate the related human health risks, we obtained crude and refined fish oils originating from the same batch of wild ocean anchovy and prepared fish oil-containing purified aquafeeds to feed omnivorous lean Nile tilapia and carnivorous fatty yellow catfish for eight weeks...
May 16, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29775944/alterations-of-cytochrome-p450-and-the-occurrence-of-persistent-organic-pollutants-in-tilapia-caged-in-the-reservoirs-of-the-igua%C3%A3-u-river
#7
F Y Yamamoto, G D Diamante, M S Santana, D R Santos, R Bombardeli, C C Martins, C A Oliveira Ribeiro, D Schlenk
Environmental chemicals originating from human activities, such as persistent organic pollutants (POPs), may interfere with the endocrine system of aquatic organisms. The effect of these chemicals on biota and human populations is of high public concern but remains poorly understood, especially in aquatic environments of South America. The aim of this study was to investigate the bioavailability of POPs and the related effects in caged male tilapia (Oreochromis niloticus) in four cascading reservoirs of the Iguaçu River, Southern Brazil...
May 15, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29771504/revisiting-the-contributions-of-far-and-near-field-routes-to-aggregate-human-exposure-to-polychlorinated-biphenyls-pcbs
#8
Li Li, Jon Arnot, Frank Wania
The general population is exposed to polychlorinated biphenyls (PCBs) by both consuming food from far-field contaminated agricultural and aquatic environments, and inhalation and non-dietary ingestion in near-field indoor or residential environments. Here, we seek to evaluate the relative importance of far- and near-field routes by simulating the time-variant aggregate exposure of Swedish females to PCB congeners from 1930 to 2030. We rely on a mechanistic model, which integrates a food-chain bioaccumulation module and a human toxicokinetic module with dynamic substance flow analysis and nested indoor-urban-rural environmental fate modeling...
May 17, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29764339/determination-of-plasma-concentrations-of-organochlorine-pesticides-and-polychlorinated-biphenyls-in-pet-cats-and-dogs
#9
Oguzhan Yavuz, Handan Hilal Arslan, Cagatay Esin, Yavuz Kursad Das, Abdurrahman Aksoy
The aim of this study was the determination of plasma concentrations of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in cats and dogs and evaluation of their prevalence and possible effects. The concentrations of nine OCPs, such as α-hexachlorocyclohexane (HCH), β-HCH, γ-HCH, hexachlorobenzene (HCB), aldrin, 2,4'-dichlorodiphenyltrichloroethane (2,4'-DDT), 4,4'-DDT, 2,4'-dichlorodiphenyldichloroethylene (2,4'-DDE) and 4,4'-DDE and 16 PCBs (PCB-28, -52, -70, -74, -81, -99, -101, -118, -138, -153, -156, -170, -180, -183, -187 and -208) were evaluated in the plasma samples of pet cats ( n = 15) and dogs ( n = 21)...
January 1, 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29763869/exposure-of-dioxin-like-chemicals-in-participants-of-the-anniston-community-health-survey-follow-up
#10
Eric Yang, Marian Pavuk, Andreas Sjödin, Michael Lewin, Richard Jones, Jim Olson, Linda Birnbaum
The 2014 follow-up of the Anniston Community Health Survey (ACHS II) consisted of 338 surviving participants from the 2005-2007 baseline study (ACHS) who had previous polychlorinated biphenyl (PCB) measurements, were not pregnant, and were not institutionalized. Questionnaires and blood samples provided the demographic, personal history, and chemical concentration data of the Anniston residents. Approximately 51% of participants were African American, 72% were female, and the mean age was 63 years old. The objectives of this study were to provide an exposure assessment of dioxin-like chemicals in the ACHS II participants and compare the measurements with the general United States (U...
May 12, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29758876/selection-of-passerine-birds-as-bio-sentinel-of-persistent-organic-pollutants-in-terrestrial-environment
#11
Ling Mo, Xiaobo Zheng, Yuxin Sun, Lehuan Yu, Xiaojun Luo, Xiangrong Xu, Xiaoquan Qin, Yongli Gao, Bixian Mai
A broad suite of persistent organic pollutants (POPs), including polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and dichlorodiphenyltrichloroethane (DDT) and its metabolites, were analyzed in pectoral muscle of eight terrestrial passerine bird species from an extensive e-waste recycling site in South China. Concentrations of PCBs, PBDEs, and DDTs in bird samples ranged from 1260-279,000, 121-14,200, and 31-7910ng/g lipid weight, respectively. Insectivorous birds had significantly higher levels of PCBs, PBDEs, and DDTs than those in granivorous birds...
August 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29758859/food-web-contaminant-dynamics-of-a-large-atlantic-slope-river-implications-for-common-and-imperiled-species
#12
Tiffany N Penland, Casey A Grieshaber, Thomas J Kwak, W Gregory Cope, Ryan J Heise, Forrest W Sessions
Persistent and bioaccumulative contaminants often reach concentrations that threaten aquatic life by causing alterations in organism behavior and development, disruption of biological processes, reproductive abnormalities, and mortality. The objectives of this research were to determine the aquatic food web structure and trophic transfer and accumulation of contaminants within a riverine ecosystem and identify potential stressors to the health of an imperiled fish, the robust redhorse (Moxostoma robustum) and other species of conservation concern in a large Atlantic Slope (USA) river...
August 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29754088/sampling-of-suspended-particulate-matter-using-particle-traps-in-the-rh%C3%A3-ne-river-relevance-and-representativeness-for-the-monitoring-of-contaminants
#13
M Masson, H Angot, C Le Bescond, M Launay, A Dabrin, C Miège, J Le Coz, M Coquery
Monitoring hydrophobic contaminants in surface freshwaters requires measuring contaminant concentrations in the particulate fraction (sediment or suspended particulate matter, SPM) of the water column. Particle traps (PTs) have been recently developed to sample SPM as cost-efficient, easy to operate and time-integrative tools. But the representativeness of SPM collected with PTs is not fully understood, notably in terms of grain size distribution and particulate organic carbon (POC) content, which could both skew particulate contaminant concentrations...
May 10, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29753250/levels-and-risk-assessment-of-hydrocarbons-and-organochlorines-in-aerosols-from-a-north-african-coastal-city-bizerte-tunisia
#14
Badreddine Barhoumi, Javier Castro-Jiménez, Catherine Guigue, Madeleine Goutx, Richard Sempéré, Abdelkader Derouiche, Amani Achour, Soufiane Touil, Mohamed Ridha Driss, Marc Tedetti
The aim of this study was to assess, for the first time, the concentrations, sources, dry deposition and human health risks of polycyclic aromatic hydrocarbons (PAHs), aliphatic hydrocarbons (AHs), polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) in total suspended particle (TSP) samples collected in Bizerte city, Tunisia (North Africa), during one year (March 2015-January 2016). Concentrations of PAHs, AHs, PCBs and OCPs ranged 0.5-17.8 ng m-3 , 6.7-126.5 ng m-3 , 0.3-11 pg m-3 and 0...
May 9, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29751587/pcbs-and-pcdd-fs-in-bluefin-tuna-occurrence-and-dietary-intake
#15
Grazia Barone, Arianna Storelli, Rita Garofalo, Rosanna Mallamaci, Nicoletta C Quaglia, Maria Maddalena Storelli
Polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-furans (PCDD/Fs) were measured in Mediterranean bluefin tuna ( Thunnus thynnus ) to verify the compliance with the EU regulations for food commercialization. The estimated intakes were also evaluated. The analyses were performed by gas chromatography-ion trap tandem mass spectrometry (GC-MS-MS). The PCBs were dominant (1132.0 ng g−1 l.w.), followed by PCDFs (23.2 pg g−1 l.w.) and PCDDs (8.5 pg g−1 l.w.). The pollutant levels (dl-PCBs: 0...
May 3, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29751431/depositional-history-of-polychlorinated-biphenyls-pcbs-organochlorine-pesticides-ocps-and-polycyclic-aromatic-hydrocarbons-pahs-in-an-amazon-estuary-during-the-last-century
#16
Patrícia A Neves, Fernanda I Colabuono, Paulo A L Ferreira, Silvia K Kawakami, Satie Taniguchi, Rubens C L Figueira, Michel M Mahiques, Rosalinda C Montone, Márcia C Bícego
The sources and depositional history of OCPs (organochlorine pesticides), PCBs (polychlorinated biphenyls) and PAHs (polycyclic aromatic hydrocarbons) over the last 100years were determined in two sediment cores collected in the Amazon region. It was possible to distinguish two depositional periods along the cores. The first period occurred before extensive anthropogenic effects were registered in the sediments. During this time interval, the concentrations of all OCPs and PCBs were below the detection limits (DL), and the PAH concentrations were low and essentially constant (58...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29751429/association-of-prenatal-exposure-to-pcdd-fs-and-pcbs-with-maternal-and-infant-thyroid-hormones-the-hokkaido-study-on-environment-and-children-s-health
#17
Toshiaki Baba, Sachiko Ito, Motoyuki Yuasa, Eiji Yoshioka, Chihiro Miyashita, Atsuko Araki, Seiko Sasaki, Sumitaka Kobayashi, Jumboku Kajiwara, Tsuguhide Hori, Shizue Kato, Reiko Kishi
Polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and biphenyls (PCBs) are persistent organic pollutants that are universally detected. Some congeners of PCDDs, PCDFs or PCBs have dioxin-like toxicity, whereas non-dioxin-like PCBs are considered to have different toxicity. Reports of the relationships between prenatal exposure to PCDDs, PCDFs or PCBs and thyroid homeostasis in pregnant women and infants have been inconsistent. The aim of this study was to investigate the effect of maternal serum PCDD/F or PCB levels on maternal and neonatal thyroid hormone (TH) levels in a prospective cohort...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29751406/high-levels-of-medium-chain-chlorinated-paraffins-and-polybrominated-diphenyl-ethers-on-the-inside-of-several-household-baking-oven-doors
#18
Christoph Gallistl, Jannik Sprengel, Walter Vetter
Fat obtained by wipe tests on the inner surface of 21 baking ovens from Stuttgart (Germany) were analyzed for halogenated flame retardants (HFRs), namely polybrominated diphenyl ethers (PBDEs), decabromodiphenyl ethane (DBDPE), dechlorane plus (DP), short- and medium-chain chlorinated paraffins (SCCPs, MCCPs), as well as polychlorinated biphenyls (PCBs). In ~50% of the samples chlorinated paraffins (CPs) were present in the mg/g fat range, i.e. three to four orders of magnitude higher concentrated than the sum of all other target compounds...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29750842/mercury-polychlorinated-biphenyls-selenium-and-fatty-acids-in-tribal-fish-harvests-of-the-upper-great-lakes
#19
Matthew J Dellinger, Jared T Olson, Bruce J Holub, Michael P Ripley
The Chippewa Ottawa Resource Authority monitors fish contaminants in Anishinaabe (Great Lake Native American) tribal fisheries. This article updates previously reported trends in two persistent bioaccumulative toxic (PBT) substances that are the primary contributors to consumption advisory limits for these fish: methylmercury (MeHg) and polychlorinated biphenyls (PCBs). Also, we report, for the first time, an analysis of nutritional benefit bioindicators and metrics in these same Upper Great Lakes fish harvests: selenium (Se) and omega-3 fatty acids (PUFA-3s)...
May 11, 2018: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/29748797/effect-of-sulfonated-graphene-on-uptake-translocation-and-metabolism-of-2-4-4-trichlorobiphenyl-in-maize-seedlings
#20
Wenjie Ren, Haiwei Chang, Yuting Wang, Ying Teng, Wenting Ma, Yongming Luo
Graphene may affect fate of organic contaminants due to its strong adsorption properties, which is very crucial for accurately assessing ecological risk of graphene and concurrent contaminants, while the current information remains largely unknown. Here, we firstly explored the adsorption characteristics of sulfonated graphene (SG) for a widespread polychlorinated biphenyl 2,4,4'-trichlorobiphenyl (PCB28) (0.5-100 μg L-1 ). Subsequently, the influence of SG on the uptake, translocation, and metabolism of PCB28 in maize seedlings was investigated through hydroponic exposure experiment...
May 10, 2018: Environmental Science and Pollution Research International
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