Levels and trends of persistent organic pollutants in ringed seals (Phoca hispida) from Central West Greenland, with particular focus on polybrominated diphenyl ethers (PBDEs)

Sediments were sampled from different surface water bodies in Tianjin coastal area, China, and persistent organic pollutants (POPs) including polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs) were measured using GC/MS or GC/ECD. The purposes were to investigate the concentration levels of the POPs and to assess their ecological risks. The results showed that all the 16 priority PAHs were detected from the 10 sediments sampled with the total concentrations of the 16 PAHs ranging from 274.06 μg/kg to 2656.65 μg/kg, while the concentrations of the halogenated POPs were generally low except in the Dagu waste discharging river where the total concentrations of 24 OCPs, 35 PCBs, and 14 PBDEs were 3103.36 μg/kg, 87.31 μg/kg, and 13.88 μg/kg, respectively. In the studied sediments, PAHs exhibited risks to benthonic organisms; particularly the concentrations of naphthalene and/or acenaphthene exceeded their probable effect concentrations in several locations. In comparison, only in the Dagu waste discharging river, OCPs exhibited risks with the concentrations of heptachlor epoxide and lindane exceeding their probable effect concentrations. PCBs and PBDEs posed rare risks in the studied area.

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Polybrominated Diphenyl Ethers and Their Hydroxylated Analogues in Ringed Seals (Phoca hispida) from Svalbard and the Baltic Sea

Environmental Science & Technology ◽

10.1021/es900211u ◽

2009 ◽

Vol 43 (10) ◽

pp. 3494-3499 ◽

Cited By ~ 64

Author(s):

Heli Routti ◽

Robert J. Letcher ◽

Shaogang Chu ◽

Bert van Bavel ◽

Geir W. Gabrielsen

Keyword(s):

Baltic Sea ◽

Polybrominated Diphenyl Ethers ◽

Phoca Hispida ◽

The Baltic Sea ◽

Ringed Seals ◽

Diphenyl Ethers ◽

The Baltic

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Distribution of polybrominated diphenyl ethers (PBDEs) and other persistent organic pollutants in human serum from Greece

Environment International ◽

10.1016/j.envint.2010.10.005 ◽

2011 ◽

Vol 37 (2) ◽

pp. 349-353 ◽

Cited By ~ 58

Author(s):

Olga I. Kalantzi ◽

Tinne Geens ◽

Adrian Covaci ◽

Panayiotis A. Siskos

Keyword(s):

Human Serum ◽

Organic Pollutants ◽

Persistent Organic Pollutants ◽

Polybrominated Diphenyl Ethers ◽

Diphenyl Ethers

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Prenatal exposure to persistent organic pollutants and polybrominated diphenyl ethers in 10 Caribbean countries

Environmental Research ◽

10.1016/j.envres.2014.05.021 ◽

2014 ◽

Vol 133 ◽

pp. 211-219 ◽

Cited By ~ 9

Author(s):

Martin S. Forde ◽

Eric Dewailly ◽

Lyndon Robertson ◽

Elhadji A. Laouan Sidi ◽

Suzanne Côté ◽

...

Keyword(s):

Organic Pollutants ◽

Prenatal Exposure ◽

Persistent Organic Pollutants ◽

Polybrominated Diphenyl Ethers ◽

Diphenyl Ethers

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Isolation of Acetobacterium sp. Strain AG, Which Reductively Debrominates Octa- and Pentabrominated Diphenyl Ether Technical Mixtures

Applied and Environmental Microbiology ◽

10.1128/aem.02919-12 ◽

2012 ◽

Vol 79 (4) ◽

pp. 1110-1117 ◽

Cited By ~ 32

Author(s):

Chang Ding ◽

Wai Ling Chow ◽

Jianzhong He

Keyword(s):

Organic Pollutants ◽

Persistent Organic Pollutants ◽

Polybrominated Diphenyl Ethers ◽

Enrichment Culture ◽

Diphenyl Ether ◽

Environmental Pollutants ◽

Content Type ◽

Diphenyl Ethers ◽

First Time ◽

Free Enrichment

ABSTRACTPolybrominated diphenyl ethers (PBDEs) are a class of environmental pollutants that have been classified as persistent organic pollutants since 2009. In this study, a sediment-free enrichment culture (culture G) was found to reductively debrominate octa- and penta-BDE technical mixtures to less-brominated congeners (tetra-, tri-, and di-BDEs) via apara-dominant debromination pattern for the former and a strictparadebromination pattern for the latter. Culture G could debrominate 96% of 280 nM PBDEs in an octa-BDE mixture to primarily tetra-BDEs in 21 weeks. Continuous transferring of culture G with octa-/penta-BDEs dissolved inn-nonane or trichloroethene (TCE) yielded two strains (Acetobacteriumsp. strain AG andDehalococcoidessp. strain DG) that retained debromination capabilities. In the presence of lactate but without TCE, strain AG could cometabolically debrominate 75% of 275 nM PBDEs in a penta-BDE mixture in 33 days. Strain AG shows 99% identity to its closest relative,Acetobacterium malicum. In contrast to strain AG, strain DG debrominated PBDEs only in the presence of TCE. In addition, 18 out of 19 unknown PBDE debromination products were successfully identified from octa- and penta-BDE mixtures and revealed, for the first time, a comprehensive microbial PBDE debromination pathway. As an acetogenic autotroph that rapidly debrominates octa- and penta-BDE technical mixtures,Acetobacteriumsp. strain AG adds to the still-limited understanding of PBDE debromination by microorganisms.

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