کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4424662 | 1619201 | 2012 | 8 صفحه PDF | دانلود رایگان |

Diastereoisomers and enantiomers of hexabromocyclododecane (HBCD) were determined in muscle and stomach contents of three terrestrial passerine birds from e-waste, urban and rural locations in South China. The highest HBCD concentration was found at the urban site, followed by the e-waste site, suggesting that HBCD was linked to urbanization and industrialization, as well as e-waste recycling activities. Trophic magnification for α-HBCD was observed in the terrestrial food chain. Diastereisomeric pattern in birds showed the predominance of α-isomer, with a minor contribution of γ-isomer. The enantiomeric analysis revealed a preferential enrichment of (−)-α-HBCD and (+)-γ-HBCD. The similarity in enantiomeric fractions of HBCD isomers between muscle and stomach contents of birds suggested that dietary uptake may be responsible for the observed nonracemic distribution of HBCD isomers in the studied birds although in vivo enantioselective biotic processes cannot be ruled out.
► HBCD concentrations in three terrestrial passerine birds and their stomach contents were determined.
► Biomagnification and trophic magnification for α-HBCD was found.
► A preferential enrichment of (−)-α-HBCD and (+)-γ-HBCD were found in birds.
► Diet rather than in vivo biotic processes contributed to the observed nonracemic distribution of HBCD isomers.
Journal: Environmental Pollution - Volume 171, December 2012, Pages 191–198