Isomer specific determination of hexabromocyclododecanes (HBCDs) in small cetaceans from the South China Sea--Levels and temporal variation.

Isomer specific determination of hexabromocyclododecanes (HBCDs) in small cetaceans from the South China Sea--Levels and temporal variation. Research Abstract Details 

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Isomer specific determination of hexabromocyclododecanes (HBCDs) in small cetaceans from the South China Sea--Levels and temporal variation. Abstract Text:

Tomohiko Isobe,Karri Ramu,Natsuko Kajiwara,Shin Takahashi,Paul K S Lam,Thomas A Jefferson,Kaiya Zhou,Shinsuke Tanabe,

A diastereoisomer (alpha, beta, and gamma) specific analytical method for measuring hexabromocyclododecanes (HBCDs) was developed using liquid chromatography-tandem mass spectrometry (LC-MS-MS). The method developed was applied to analyze blubber of small cetaceans to divulge the distribution and temporal variation of HBCDs in the Asian marine environment. HBCDs were detected in all the blubber samples of finless porpoises (Neophocaena phocaenoides) and Indo-Pacific humpback dolphins (Sousa chinensis) collected from the South China Sea during 1990-2001. Concentrations of HBCDs were higher in humpback dolphins (31-380 ng/g lipid) than in finless porpoises (4.7-55 ng/g lipid), which can be attributed to habitat differences. Average concentrations of alpha-HBCD in finless porpoises increased from 9.5 ng/g lipid in 1990 to 35 ng/g lipid in 2000/01. alpha-HBCD was predominant among the three isomers with some exceptions in finless porpoises collected in 1990. This is the first report on HBCDs contamination in marine mammals from Southeast Asia.

Isomer specific determination of hexabromocyclododecanes (HBCDs) in small cetaceans from the South China Sea--Levels and temporal variation. Publishing Authors By Initials

T Isobe,K Ramu,N Kajiwara,S Takahashi,PK Lam,TA Jefferson,K Zhou,S Tanabe,

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Isomer specific determination of hexabromocyclododecanes (HBCDs) in small cetaceans from the South China Sea--Levels and temporal variation. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Marine pollution bulletin

VOLUME: 54

Page Numbers: 1139-45

Journal Abbreviation: Mar. Pollut. Bull.

ISSN: 0025-326X

DAY: 12

MONTH: 06

YEAR: 2007

Isomer specific determination of hexabromocyclododecanes (HBCDs) in small cetaceans from the South China Sea--Levels and temporal variation. Information

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LANGUAGE: eng

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AFFILIATION: Center for Marine Environmental Studies (CMES), Ehime University, 2-5 Bunkyo-cho, Matsuyama 790-8577, Japan.

Country: England

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MEDLINETA: Mar Pollut Bull

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