نتایج جستجو برای: bde

تعداد نتایج: 813  

2010
Milou M.L. Dingemans Harm J. Heusinkveld Åke Bergman Martin van den Berg Remco H.S. Westerink

BACKGROUND Brominated flame retardants, including the widely used polybrominated diphenyl ethers (PBDEs), have been detected in humans, raising concern about possible neurotoxicity. Recent research demonstrated that the hydroxylated metabolite 6-OH-BDE-47 increases neurotransmitter release by releasing calcium ions (Ca2+) from intracellular stores at much lower concentrations than its environme...

Journal: :Chemosphere 2015
Ming-Hong Wu Jing-Cheng Pei Ming Zheng Liang Tang Yang-Yang Bao Ben-Tuo Xu Rui Sun Yan-Feng Sun Gang Xu Jian-Qiu Lei

In this study, 14 polybrominated diphenyl ethers (PBDEs) congeners were investigated in soil and outdoor dust taken from Jiading District, Shanghai City. The concentrations of Σ13PBDEs (BDE-17, BDE-28, BDE-47, BDE-66, BDE-71, BDE-85, BDE-99, BDE-100, BDE-138, BDE-153, BDE-154, BDE-183 and BDE-190) and BDE-209 ranged from 0.37 to 32.9ngg(-1) and 4.31 to 141.8ngg(-1) dry weight (dw) in soil. Conc...

Journal: :Environmental science & technology 2008
Yi Wan Jianying Hu Kun Zhang Lihui An

Polybrominated diphenyl ethers (PBDEs) are of great environmental concern due to the exponential increase of the concentrations in the environment, especially in high trophic level organisms, and the trophodynamics of these chemicals in aquatic food webs is an important criterion for assessing their ecological risk. This study analyzed 13 PBDEs in the zooplankton, five invertebrate species, six...

Journal: :Environmental science & technology 2010
Yi Wan Fengyan Liu Steve Wiseman Xiaowei Zhang Hong Chang Markus Hecker Paul D Jones Michael H W Lam John P Giesy

Polybrominated diphenyl ethers (PBDEs), hydroxylated (OH) and methoxylated (MeO), have been widely detected in aquatic environments. However, relationships among these structurally related compounds in exposed organisms are unclear. To elucidate biotransformation relationships among BDE-47, 6-OH-BDE-47, and 6-MeO-BDE-47, dietary accumulation, maternal transfer, and tissue distribution of these ...

Journal: :Chemosphere 2015
Quan Wen Hong-ling Liu Yu-ting Zhu Xin-mei Zheng Guan-yong Su Xiao-wei Zhang Hong-xia Yu John P Giesy Michael H W Lam

OH-PBDEs have been reported to be more potent than the postulated precursor PBDEs or corresponding MeO-PBDEs. However, there are contradictory reports for transformation of these compounds in organisms, particularly, for biotransformation of OH-PBDEs and MeO-PBDEs, only one study reported transformation of 6-OH-BDE-47 and 6-MeO-BDE-47 in Japanese medaka. In present study zebrafish (Danio rerio)...

Journal: :Environmental toxicology and chemistry 2004
Heather M Stapleton Robert J Letcher Juliana Li Joel E Baker

Polybrominated diphenyl ethers (PBDEs) are hydrophobic organic contaminants with properties and nomenclature similar to polychlorinated biphenyls (PCBs). While much information is available on the bioaccumulation and pharamcokinetics of PCBs, little information is available on PBDEs. In this study, juvenile carp were exposed to a diet spiked with a cocktail of four BDE congeners (2,4,4'-tribrom...

Journal: :Environmental pollution 2009
Ting Xu Il Kyu Cho Dongli Wang Fernando M Rubio Weilin L Shelver Anne M E Gasc Ji Li Qing X Li

A gas chromatograph/electron capture detector-ion trap mass spectrometer (GC/ECD-ITMS) was used for the determination of polybrominated diphenyl ethers (PBDEs) in euryhaline fish and crabs. GC/ECD-ITMS results showed that average recoveries from the spiked fish samples are in a range of 58-123% with relative standard deviations (RSDs) of 5-19%. PBDE concentrations obtained from GC/ECD-ITMS rang...

2016
Mi-Yeon Shin Sunggyu Lee Hai-Joong Kim Jeong Jae Lee Gyuyeon Choi Sooran Choi Sungjoo Kim Su Young Kim Jeongim Park Hyo-Bang Moon Kyungho Choi Sungkyoon Kim

Polybrominated diphenyl ethers (PBDEs) have been used as flame retardants. Although many reports have indicated an association between exposure to PBDEs and developmental neurotoxicity, the relative contributions of different sources of dust PBDE congeners to the levels in various tissues of mother-baby pairs is not well understood. The aims of this study were thus to measure the quantitative r...

Journal: :Environmental science & technology 2010
Honglin Huang Shuzhen Zhang Peter Christie Sen Wang Mei Xie

Deca-bromodiphenyl ether (BDE-209) is the major component of the commercial deca-BDE flame retardant. There is increasing concern over BDE-209 due to its increasing occurrence in the environment and in humans. In this study the behavior of BDE-209 in the soil-plant system was investigated. Accumulation of BDE-209 was observed in the roots and shoots of all the six plant species examined, namely...

Journal: :Roczniki Panstwowego Zakladu Higieny 2014
Wojciech Korcz Paweł Struciński Katarzyna Góralczyk Agnieszka Hernik Monika Łyczewska Katarzyna Czaja Małgorzata Matuszak Maria Minorczyk Jan K Ludwicki

BACKGROUND Polybrominated diphenyl ethers (PBDEs) belong to group of so-called persistent organic pollutants (POPs). These compounds occur in nearly all elements of the environment, including household dust which constitutes one of a major route for human exposure. Their main adverse effects on human health are associated mainly with endocrine disruption--they interfere with thyroid function ex...

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