排污河中生物体内十溴联苯醚（bde-209）脱溴的证据（英文文献原版）.pdf
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排污河中生物体内十溴联苯醚（bde-209）脱溴的证据（英文文献原版）,排污河中生物体内十溴联苯醚（bde-209）脱溴的证据（英文文献原版）本套完整资料包括开题报告，毕业论文，毕业答辩ppt稿，英文文献原文，英文文献翻译，学年论文共6个部分，此为第四个部分英文文献原文evidence of debromination ofdecabromodiphenyl ether (bde-209)...
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排污河中生物体内十溴联苯醚（BDE-209）脱溴的证据（英文文献原版）
本套完整资料包括开题报告，毕业论文，毕业答辩PPT稿，英文文献原文，英文文献翻译，学年论文共6个部分，此为第四个部分英文文献原文
Evidence of Debromination of Decabromodiphenyl Ether (BDE-209) in Biota from a Wastewater Receiving Stream
abstract：Decabromodiphenyl ether (BDE-209) is a high production
volume flame retardant. To date, regulation and control of
its environmental release have been minimal. Once in
the environment, BDE-209 may encounter conditions favoring
debromination, potentially forming congeners with
greater toxicity, bioaccumulation potential, and persistence.
However, (photolytic and in vivo) debromination has only
been demonstrated under laboratory scenarios. To examine
whether debromination was likely in the field, PBDE
congener profiles were tracked from a wastewater treatment
plant (sludge) to receiving stream sediments and
associated aquatic biota. BDE-209 and 23 additional
PBDEs were detected. Sludge congener profiles resembled
the commercial penta- and deca- formulations, suggesting
minimal -209 debromination during wastewater treatment.
Similar profiles were observed in surficial sediments at the
outfall and downstream. However, sunfish (Lepomis
gibbosus), creek chub (Semotilus atromaculatus), and
crayfish (Cambarus puncticambarus sp. c) collected near
the outfall contained tri- through deca-PBDEs, including
congeners not detected in the commercial deca- mixture,
sludges or sediments (BDE-179, -184, -188, -201, and
-202). A previous in vivo laboratory study identified these
as -209 debromination products. This supports the hypothesis
that metabolic debromination of -209 does occur in the
aquatic environment under realistic conditions. Hence
assessments that assume no BDE-209 debromination may
underestimate associated bioaccumulation and toxicity
attributable to the less brominated congeners produced.
本套完整资料包括开题报告，毕业论文，毕业答辩PPT稿，英文文献原文，英文文献翻译，学年论文共6个部分，此为第四个部分英文文献原文
Evidence of Debromination of Decabromodiphenyl Ether (BDE-209) in Biota from a Wastewater Receiving Stream
abstract：Decabromodiphenyl ether (BDE-209) is a high production
volume flame retardant. To date, regulation and control of
its environmental release have been minimal. Once in
the environment, BDE-209 may encounter conditions favoring
debromination, potentially forming congeners with
greater toxicity, bioaccumulation potential, and persistence.
However, (photolytic and in vivo) debromination has only
been demonstrated under laboratory scenarios. To examine
whether debromination was likely in the field, PBDE
congener profiles were tracked from a wastewater treatment
plant (sludge) to receiving stream sediments and
associated aquatic biota. BDE-209 and 23 additional
PBDEs were detected. Sludge congener profiles resembled
the commercial penta- and deca- formulations, suggesting
minimal -209 debromination during wastewater treatment.
Similar profiles were observed in surficial sediments at the
outfall and downstream. However, sunfish (Lepomis
gibbosus), creek chub (Semotilus atromaculatus), and
crayfish (Cambarus puncticambarus sp. c) collected near
the outfall contained tri- through deca-PBDEs, including
congeners not detected in the commercial deca- mixture,
sludges or sediments (BDE-179, -184, -188, -201, and
-202). A previous in vivo laboratory study identified these
as -209 debromination products. This supports the hypothesis
that metabolic debromination of -209 does occur in the
aquatic environment under realistic conditions. Hence
assessments that assume no BDE-209 debromination may
underestimate associated bioaccumulation and toxicity
attributable to the less brominated congeners produced.
