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https://www.readbyqxmd.com/read/27907097/levels-of-selected-persistent-organic-pollutants-pcb-pbde-and-pesticides-in-honey-bee-pollen-sampled-in-poland
#1
Marek Łukasz Roszko, Marta Kamińska, Krystyna Szymczyk, Renata Jędrzejczak
Chemical plant protection is a commonly discussed factor potentially responsible for decline in pollinators and other beneficial insect populations. Various groups of chemicals including persistent organic pollutants could impact a bee colony's welfare and are reported to be present in bee tissue and apiary products. The aim of this work was to evaluate the presence of selected persistent organic pollutant and pesticide residues in bee pollen originating from different geographical regions of Poland. Pesticide residues were identified in 60% of tested bee pollen samples...
2016: PloS One
https://www.readbyqxmd.com/read/27900722/atmospheric-deposition-of-pbdes-and-dps-in-dongjiang-river-basin-south-china
#2
Xiaowei Wu, Yan Wang, Minmin Hou, Chunling Luo, Hongxia Zhao, Gan Zhang
The atmospheric deposition fluxes of polybrominated diphenyl ethers (PBDEs) and Dechlorane Plus (DPs) in Dongjiang River Basin of the Pearl River Delta in South China were investigated during winter and summer, respectively. The total deposition fluxes varied from 4.74 to 27.0 ng/m(2)/day for PBDEs and 8.77 to 206 ng/m(2)/day for DPs, respectively. The fractions of anti-DP to the total DPs (f anti) varied from 0.28 to 0.63 (mean = 0.43 ± 0.06), i.e., generally lower than those in commercial products, which might be attributed to the different environmental fates of the two isomers...
November 30, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27898327/effects-of-three-different-embryonic-exposure-modes-of-2-2-4-4-tetrabromodiphenyl-ether-on-the-path-angle-and-social-activity-of-zebrafish-larvae
#3
Bin Zhang, Xiaoling Chen, Ruijie Pan, Ting Xu, Jing Zhao, Wenping Huang, Youyu Liu, Daqiang Yin
The toxicological research of polybrominated diphenyl ethers (PBDEs) has focused on its neurotoxicity; however, many questions still remain. For example, behavioral effects other than basic locomotion are seldom reported. To further evaluate the neurobehavioral toxicity of 2, 2', 4, 4'-tetrabromodiphenyl ether (BDE-47), a typical PBDE congener in animal tissues, we employed three different exposure modes, namely, continuous, early pulse, and interval exposure, to investigate the path angle and social activity changes of zebrafish larvae exposed to BDE-47 using automated equipment (Zebrabox)...
November 26, 2016: Chemosphere
https://www.readbyqxmd.com/read/27885579/an-integrated-assessment-of-pollution-and-biological-effects-in-flounder-mussels-and-sediment-in-the-southern-baltic-sea-coastal-area
#4
Henryka Dabrowska, Orest Kopko, Kari K Lehtonen, Thomas Lang, Ilona Waszak, Maija Balode, Evita Strode
Organic and metal contaminants and biological effects were investigated in flounder, mussels, and sediments in the southern Baltic Sea coastal area in order to assess environmental quality status in that area. Four sites were selected, including two within the Gulf of Gdańsk (GoG). In biota and sediment at each site, DDTs dominated over PCBs and PBDEs were the least abundant among organic contaminants. Their concentrations decreased progressively outward from GoG. Among metal contaminants, the levels of Hg, Pb, and Cd were elevated in GoG...
November 24, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27884471/polybrominated-diphenyl-ethers-pbdes-and-hexa-brominated-biphenyls-hexa-bbs-in-fresh-foods-ingested-in-taiwan
#5
Jung-Wei Chang, Chung-Feng Hung, Ya-Chen Hsu, Yi-Ting Kao, Ching-Chang Lee
Polybrominated diphenyl ethers (PBDEs) and hexa-brominated biphenyls (Hexa-BBs) are bioaccumulative and aggregate in the food chain. Therefore, background monitoring and risk assessment for dietary intake are necessary. In present study, a systematic sampling method was first used to collect the high fat content foodstuff such as poultry, livestock, eggs, fish, other seafood, dairy products, and the infant foods and then foodstuff with high consumption in seven categories of 600 food samples. After integrating four years of background surveys of PBDE levels (2010-2013) and one year of that of Hexa-BBs (2013), the highest estimated daily intake (EDI) of PBDEs for Taiwanese food consumption was found in 0- to 3-year-olds (mean = 9...
January 2017: Environmental Pollution
https://www.readbyqxmd.com/read/27884139/brominated-flame-retardants-in-placental-tissues-associations-with-infant-sex-and-thyroid-hormone-endpoints
#6
Christopher Leonetti, Craig M Butt, Kate Hoffman, Stephanie C Hammel, Marie Lynn Miranda, Heather M Stapleton
BACKGROUND: Brominated flame retardants (BFRs) are endocrine disruptors that bioaccumulate in the placenta, but it remains unclear if they disrupt tissue thyroid hormone (TH) metabolism. Our primary goal was to investigate associations between placental BFRs, TH levels, Type 3 deiodinase (DIO3) activity and TH sulfotransferase (SULT) activities. METHODS: Placenta samples collected from 95 women who delivered term (>37 weeks) infants in Durham, NC, USA (enrolled 2010-2011) were analyzed for polybrominated diphenyl ethers (PBDEs), 2,4,6-tribromophenol (2,4,6-TBP), THs (T4, T3 and rT3), and DIO3 and TH SULT activities...
November 25, 2016: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/27882495/occurrence-profiles-and-ecological-risks-of-polybrominated-diphenyl-ethers-in-mangrove-sediments-of-shantou-china
#7
Xu-Cheng Liu, Wen-Cheng Wu, Yin-Bo Zhang, Tao Wang, Jian-Gang Zhao, Zhang-He Chen
Surface sediments were collected from three mangrove wetlands (Yifeng Xi, Shuanghan, and Su'ai Wan) in Shantou coastal zone of South China to investigate spatial distributions of polybrominated diphenyl ethers (PBDEs). The results demonstrate that PBDEs were detected in all the samples, indicating their widespread occurrence in coastal sediments of the studied area. Σ9PBDEs (defined as the sum of nine targeted PBDE congeners except BDE-209) and BDE-209 are in the range of 2.3 to 11.5 and 16.7 to 58.2 ng/g, respectively...
November 23, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27876543/in-utero-and-childhood-ddt-dde-pbde-and-pcbs-exposure-and-sex-hormones-in-adolescent-boys-the-chamacos-study
#8
Brenda Eskenazi, Stephen A Rauch, Rachel Tenerelli, Karen Huen, Nina T Holland, Robert H Lustig, Katherine Kogut, Asa Bradman, Andreas Sjodin, Kim G Harley
Dichlorodiphenyltrichloroethane (DDT), polybrominated diphenyl ether (PBDE) flame retardants, and polychlorinated biphenyls (PCBs) are believed to be endocrine-disrupting chemicals (EDCs) in humans and animals. The purpose of this study is to examine the relationship of in utero and childhood exposure to these purported EDCs and reproductive hormones in adolescent boys who participated in CHAMACOS, an ongoing birth cohort in California's Salinas Valley. We measured o,p'- and p,p'-DDT, p,p'- DDE, PBDEs and PCBs in serum collected from mothers during pregnancy or at delivery and from their sons at 9 years...
November 14, 2016: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/27865120/polybrominated-diphenyl-ethers-pbdes-in-great-lakes-fish-levels-patterns-trends-and-implications-for-human-exposure
#9
Nilima Gandhi, Sarah B Gewurtz, Ken G Drouillard, Terry Kolic, Karen MacPherson, Eric J Reiner, Satyendra P Bhavsar
Levels of polybrominated diphenyl ethers (PBDEs) were measured in edible portions of Great Lakes fish, with the goal of examining patterns/trends and evaluating implications for human exposure. A total of 470 fillets of 18 fish species collected from various parts of the Canadian waters of the Great Lakes between 2006 and 2013 were analyzed for 17 (expanded to 33 in 2009) PBDEs. For a limited number of species, fillet to whole body and fillet to eggs PBDEs were compared to examine pattern and concentration among tissue types...
November 16, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27836186/polybrominated-diphenyl-ethers-pbdes-and-their-hydroxylated-and-methoxylated-analogues-in-the-blood-of-harbor-dall-s-and-finless-porpoises-from-the-japanese-coastal-waters
#10
Mari Ochiai, Kei Nomiyama, Tomohiko Isobe, Tadasu K Yamada, Yuko Tajima, Ayaka Matsuda, Akira Shiozaki, Takashi Matsuishi, Masao Amano, Hisato Iwata, Shinsuke Tanabe
This study investigated the accumulation of polybrominated diphenyl ethers (PBDEs) and their hydroxylated and methoxylated analogues (OH-PBDEs and MeO-PBDEs) in the blood of harbor porpoises, Dall's porpoises, and finless porpoises stranded or bycaught in Japanese coastal waters and in the North Pacific Ocean. Moreover, we suggested the origins of these contaminants and the factors affecting their pattern of accumulation. Levels of PBDEs in Dall's porpoises were one order of magnitude greater than those in the other species...
November 5, 2016: Marine Environmental Research
https://www.readbyqxmd.com/read/27836138/polybrominated-diphenyl-ethers-in-marine-sediments-of-sanggou-bay-in-east-china
#11
Longhua Wang, Wei Ge, Chao Chai, Bin Xia, Tao Jiang
Polybrominated diphenyl ethers (PBDEs) were measured in the surface sediments collected in August 2015 in Sanggou Bay, China. The total concentrations of 13 PBDEs, including BDE-17, -28, -47, -66, -71, -85, -99, -100, -138, -153, -154, -183 and -190, and concentrations of BDE-209 were 0.223-1.259ng/g and 0.865-9.275ng/g, respectively. The PBDE levels increased from the outer bay to the inner bay. BDE-209 was the predominant congener, followed by BDE-47, BDE-71, and BDE-99. Significant positive correlations were observed for tri-BDEs with organic carbon (r=0...
November 8, 2016: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27827555/uk-dietary-exposure-to-pcdd-fs-pcbs-pbdd-fs-pbbs-and-pbdes-comparison-of-results-from-24-h-duplicate-diets-and-total-diet-studies
#12
Lindsay Bramwell, David Mortimer, Martin Rose, Alwyn Fernandes, Stuart Harrad, Tanja Pless-Mulloli
Chemicals in food are monitored to check for compliance with regulatory limits and to evaluate trends in dietary exposures, among other reasons. This study compared two different methods for estimating human dietary exposure to lipophilic persistent organic pollutants (POPs) during 2011/12: (1) the 2012 Total Diet Study (TDS) conducted by the UK Food Standards Agency (FSA) and (2) a 24-h duplicate diet (DD) study of 20 adults from the North East of England. The equivalence of the two approaches was assessed; anything less than an order of magnitude could be considered reasonable and within three-fold (equivalent to 0...
December 1, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27814985/review-of-contamination-of-sewage-sludge-and-amended-soils-by-polybrominated-diphenyl-ethers-based-on-meta-analysis
#13
REVIEW
Minhee Kim, Loretta Y Li, Tamer Gorgy, John R Grace
Polybrominated diphenyl ethers (PBDEs) are still present in sewage sludge and sludge-amended soil, even though commercial PBDEs were prohibited or voluntarily phased out several years ago. In this study, levels and compositional profiles of seven major PBDE congeners in sludge are assessed in relation to their usage patterns in commercial products, and years of being banned and phased out in North America, Europe, and Asia. Annual accumulations and future long-term changes of PBDE in sludge-amended soil are estimated...
January 2017: Environmental Pollution
https://www.readbyqxmd.com/read/27814953/dioxin-like-activities-halogenated-flame-retardants-organophosphate-esters-and-chlorinated-paraffins-in-dust-from-australia-the-united-kingdom-canada-sweden-and-china
#14
Fiona Wong, Go Suzuki, Chieko Michinaka, Bo Yuan, Hidetaka Takigami, Cynthia A de Wit
The concentrations of organic flame retardants (FRs) and dioxin-like activities in dust collected from five countries were investigated. The correlations between the concentrations of the different groups of FRs and dioxin-like activities were examined. Chlorinated paraffins (CPs, C9 to C31) were found in the highest concentration (median ∑CP 700 μg/g, range 280-4750 μg/g), followed by organophosphate esters (median ∑13OPEs 56 μg/g, range 21-110 μg/g), halogenated flame retardants (median ∑17HFRs 3...
November 1, 2016: Chemosphere
https://www.readbyqxmd.com/read/27814535/species-specific-accumulation-of-polybrominated-diphenyl-ethers-pbdes-and-other-emerging-flame-retardants-in-several-species-of-birds-from-korea
#15
Xiangzi Jin, Sunggyu Lee, Yunsun Jeong, Jae-Pyoung Yu, Woon Kee Baek, Kyung-Hoon Shin, Kurunthachalam Kannan, Hyo-Bang Moon
Few studies have been conducted on the alternatives to legacy flame retardants in avian species worldwide. In this study, polybrominated diphenyl ethers (PBDEs) and alternative flame retardants such as novel brominated flame retardants (NBFRs) and dechlorane plus (DP) were determined in livers of 10 species of birds from Korea to elucidate species-specific accumulation, biological factors that affect accumulation, and bioaccumulation potentials of these contaminants. Among the emerging alternative flame retardants, the highest occurrence was found for bis(2-ethylhexyl)-3,4,5,6-tetrabromo-phthalate (BEHTBP), syn-DP, anti-DP, and decabromodiphenyl ethane (DBDPE)...
October 27, 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27802868/biosynthesis-of-hydroxylated-polybrominated-diphenyl-ethers-and-the-correlation-with-photosynthetic-pigments-in-the-red-alga-ceramium-tenuicorne
#16
Dennis Lindqvist, Elin Dahlgren, Lillemor Asplund
Hydroxylated polybrominated diphenyl ethers (OH-PBDEs) have been identified in a variety of marine organisms from different trophic levels indicating a large spread in the environment. There is much evidence pointing towards natural production as the major source of these compounds in nature. However, much is still not known about the natural production of these compounds. Seasonal trend studies have shown large fluctuations in the levels of OH-PBDEs in Ceramium tenuicorne from the Baltic Sea. Yet, even though indications of stimuli that can induce the production of these compounds have been observed, none, neither internal nor external, has been assigned to be responsible for the recorded fluctuations...
October 29, 2016: Phytochemistry
https://www.readbyqxmd.com/read/27801777/the-sequestration-of-oxy-polybrominated-diphenyl-ethers-in-the-nudibranchs-miamira-magnifica-and-miamira-miamirana
#17
Ariyanti S Dewi, Karen L Cheney, Holly H Urquhart, Joanne T Blanchfield, Mary J Garson
A series of oxy-polybrominated diphenyl ethers (O-PBDEs) has been isolated from the extracts of Miamira magnifica and Miamira miamirana collected from Queensland, Australia. M. magnifica sequesters the new OH-PBDE 1 and six known OH-PBDEs containing four to six bromines (2-7). M. miamirana also accumulates known tribromo- and tetrabromo OMe-PBDEs 8-10 in both mantle and viscera tissues. To date, Miamira is the only genus of the family Chromodorididae that is known to incorporate O-PBDEs, rather than terpenes, in the mantle where the metabolites may play a putative role in chemical defense...
October 27, 2016: Marine Drugs
https://www.readbyqxmd.com/read/27780594/tracking-polychlorinated-biphenyls-pcbs-and-polybrominated-diphenyl-ethers-pbdes-in-sediments-and-soils-from-the-southwest-of-buenos-aires-province-argentina-south-eastern-part-of-the-grulac-region
#18
Norma Tombesi, Karla Pozo, Mónica Álvarez, Petra Přibylová, Petr Kukučka, Ondřej Audy, Jana Klánová
PCBs and PBDEs (7 and 10 congeners, respectively) were analyzed in four coastal surface sediments collected from the northern shore of Bahía Blanca estuary and in nine soils from different locations of Bahía Blanca city and the surrounding region (Southwest of Buenos Aires Province, Argentina). Sediment samples showed PCBs(Σ7) concentrations ranged from 0.61 to 17.6ngg(-1) (dry weight=dw) and PBDEs(Σ10) from 0.16 to 2.02ngg(-1) dw, whereas in soil samples ranged from 0.04 to 1.67ngg(-1) dw for PCBs(Σ7) and 0...
October 22, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27780102/persistent-organic-pollutants-in-sediment-and-fish-in-the-river-thames-catchment-uk
#19
Qiong Lu, Monika D Jürgens, Andrew C Johnson, Carola Graf, Andy Sweetman, John Crosse, Paul Whitehead
Some organic pollutants including polychlorinated biphenyls (PCBs), polybrominated diphenylethers (PBDEs) and hexachlorobenzene (HCB) have been banned from production and use in the UK for >30years but due to their toxicity and persistence are still of concern. However, due to their hydrophobicity they are present at very low concentrations and are difficult to measure in water, and so other matrices need to be sampled in order to best assess contamination. This study measured concentrations of ΣICES 7 PCBs (PCB congeners 28, 52, 101, 118, 138, 153 and 180) and Σ6 PBDEs (PBDE congeners 28, 47, 99, 100, 153, 154) and HCB in both bed-sediments and wild roach (a common pelagic fish) in the Thames Basin...
October 22, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27775342/polybrominated-diphenyl-ethers-pbdes-in-surface-soils-across-five-asian-countries-levels-spatial-distribution-and-source-contribution
#20
Wen-Long Li, Wan-Li Ma, Hongliang Jia, Wenjun Hong, Hyo-Bang Moon, Haruhiko Nakata, Nguyen Hung Minh, Ravindra Kumar Sinha, Kai Hsien Chi, Kurunthachalam Kannan, Ed Sverko, Yi-Fan Li
A total of 23 PBDE congeners were measured in soil samples collected in areas with no known point source (urban/rural/background sites, U/R/B sites) and in contaminated areas (brominated flame retardants (BFRs) related industrial and e-waste recycling sites) across five Asian countries. The highest PBDE concentrations were found in BFRs related industrial and e-waste recycling sites. The concentrations of PBDEs in U/R/B sites followed the order of: urban > rural > background sites. Total PBDE concentrations were dominated by BDE-209, while BDE-17, -85, -138, -191, -204 and -205 were the least abundant compounds...
October 24, 2016: Environmental Science & Technology
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