Diastereomer- and enantiomer-selective accumulation and depuration of 1,2-dibromo-4-(1,2-dibromoethyl) cyclohexanes (DBE-DBCHs) and 1,2,5,6-tetrabromocyclooctanes (TBCOs) in earthworms (Eisenia fetida)
文献类型：期刊论文
| 作者 | Yang, Entai; Wen, Bei; Zhang, Zhenying; Huang, Honglin ; Zhang, Shuzhen
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2022-06-20 |
| 卷号 | 826期号:0页码:154145 |
| ISSN号 | 0048-9697 |
| 关键词 | BROMINATED FLAME RETARDANTS IN-VITRO TETRABROMOETHYLCYCLOHEXANE TBECH INDOOR ENVIRONMENTS HEXABROMOCYCLODODECANE DUST BIOTRANSFORMATION BIOISOMERIZATION DISRUPTION TOXICITY |
| 英文摘要 | Due to the regulation of hexabromocyclododecane (HBCD), much attention has been paid to its potential substitutes, 1,2-dibromo-4-(1,2-dibromoethyl) cyclohexane (DBE-DBCH) and 1,2,5,6-tetrabromocyclooctane (TBCO). DBE-DBCH and TBCO contain several diastereomers and enantiomers, which may exhibit different environmental behaviors and biological effects. In this study, the accumulation and depuration of individual DBE-DBCH and TBCO diastereomers by earthworms (Eisenia fetida) from diastereomer-contaminated soils were evaluated. The accumulation and depuration kinetics of DBE-DBCH and TBCO diastereomers followed one-compartment first-order kinetics. The biota soil accumulation factor (BSAF) of beta-DBE-DBCH (2.74 g(oc) g(lip)(-1)) was 1.26 times that of alpha-DBE-DBCH (2.18 g(oc) g(lip)(-1)), while the BSAF of beta-TBCO (2.15 g(oc) g(lip)(-1)) was 1.62 times that of alpha-TBCO (1.3 g(oc) g(lip)(-1)), showing the diastereomer-specific accumulation of DBE-DBCH and TBCO. DBE-DBCH and TBCO diastereomers appeared to be transformed in earthworm-soil systems; however, no evidence of bioisomerization of the four diastereomers in earthworms was found, and no potential metabolites of debromination and hydroxylation were detected. Furthermore, the selective enrichment of E1-alpha-DBE-DBCH and E1-beta-DBE-DBCH (E1 represents the first enantiomer eluted) occurred in earthworms as the enantiomer fractions (EFs) for alpha-DBE-DBCH (0.562-0.763) and beta-DBE-DBCH (0.516-0.647) were significantly greater than those in the technical products (0.501 for alpha-DBE-DBCH and 0.497 for beta-DBE-DBCH, p < 0.05), especially in the depuration stage. The results demonstrated the diastereomer-and enantiomer-selective accumulation of DBE-DBCH and the diastereomer-selective accumulation of TBCO in the earthworm. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47505]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 通讯作者 | Wen, Bei |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Entai,Wen, Bei,Zhang, Zhenying,et al. Diastereomer- and enantiomer-selective accumulation and depuration of 1,2-dibromo-4-(1,2-dibromoethyl) cyclohexanes (DBE-DBCHs) and 1,2,5,6-tetrabromocyclooctanes (TBCOs) in earthworms (Eisenia fetida)[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,826(0):154145. |
| APA | Yang, Entai,Wen, Bei,Zhang, Zhenying,Huang, Honglin,&Zhang, Shuzhen.(2022).Diastereomer- and enantiomer-selective accumulation and depuration of 1,2-dibromo-4-(1,2-dibromoethyl) cyclohexanes (DBE-DBCHs) and 1,2,5,6-tetrabromocyclooctanes (TBCOs) in earthworms (Eisenia fetida).SCIENCE OF THE TOTAL ENVIRONMENT,826(0),154145. |
| MLA | Yang, Entai,et al."Diastereomer- and enantiomer-selective accumulation and depuration of 1,2-dibromo-4-(1,2-dibromoethyl) cyclohexanes (DBE-DBCHs) and 1,2,5,6-tetrabromocyclooctanes (TBCOs) in earthworms (Eisenia fetida)".SCIENCE OF THE TOTAL ENVIRONMENT 826.0(2022):154145. |
入库方式： OAI收割
来源：生态环境研究中心
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