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首页> 外文期刊>Ecotoxicology and Environmental Safety >Accumulation of hexabromocyclododecane diastereomers and enantiomers in two microalgae, Spirulina subsalsa and Scenedesmus obliquus
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Accumulation of hexabromocyclododecane diastereomers and enantiomers in two microalgae, Spirulina subsalsa and Scenedesmus obliquus

机译：两种螺旋藻，螺旋藻和斜生藻中六溴环十二烷非对映异构体和对映体的积累

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摘要

Selective accumulation and bioisomerization of hexabromocyclododecane (HBCD) diastereomers and their enantiomers have been reported in several aquatic organisms; however, these processes have not been evaluated in algae. In the present study, the accumulation of three HBCD diastereomers (α-,β- and γ-HBCD) was studied using two microalgae, Spirulina subsalsa and Scenedesmus obliquus, in the plateau phase for seven days. The accumulation ability of S. obliquus was greater than that of S. subsalsa, with steady state BCF values in the range of 390-469 and 174-350, respectively. For the three diastereomers, the accumulation trend of a-HBCD >β-HBCD >γ-HBCD was observed in S. subsalsa, whereas the accumulation trend of β-HBCD >α-HBCD >γ-HBCD was observed in S. obliquus. Contrary to the process typically occurring in fish, the bioisomerization from β- or γ-HBCD to a-HBCD was not observed in algae. a-HBCD exhibited selective enrichment of ( + )enantiomer in S. subsalsa and (-)enantiomer in S. obliquus. No significant enantioselectivity was observed for β- and γ-HBCD. New metabolites, tetrabromocyclododecadiene (TBCDi) and tribromocyclododecatriene (TriBCDie), were observed in S. subsalsa for the first time, but these were not observed in S. obliquus.
机译：六溴环十二烷（HBCD）非对映异构体及其对映异构体的选择性积累和生物异构化已在几种水生生物中得到报道。但是，这些过程尚未在藻类中进行评估。在本研究中，使用两种微藻藻螺旋藻和斜生藻藻在高原期研究了7种HBCD非对映体（α-，β-和γ-HBCD）的积累。斜生链球菌的蓄积能力要比盐基链球菌大，其稳态BCF值分别在390-469和174-350范围内。对于这三种非对映异构体，在盐藻中观察到a-六溴环十二烷>β-六溴环十二烷>γ-六溴环十二烷的积累趋势，而在斜ob中发现了β-六溴环十二烷>α-六溴环十二烷>γ-六溴环十二烷的积累趋势。与通常在鱼类中发生的过程相反，在藻类中未观察到从β-或γ-HBCD到a-HBCD的生物异构化。 a-六溴环十二烷显示了盐藻中的（+）对映异构体和斜叶葡萄球菌中的（-）对映异构体的选择性富集。对β-和γ-六溴环十二烷没有观察到明显的对映选择性。新的代谢物，四溴环十二碳二烯（TBCDi）和三溴环十二碳三烯（TriBCDie），首次在沙门氏菌中观察到，但在斜纹酵母中没有观察到。

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  • 来源
    《Ecotoxicology and Environmental Safety》 |2014年第6期|136-142|共7页
  • 作者

    Yanwei Zhang; Hongwen Sun; Hongkai Zhu; Yuefei Ruan; Fang Liu; Xiaowei Liu;

  • 作者单位

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University,Tianjin 300071 China;

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University,Tianjin 300071 China;

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University,Tianjin 300071 China;

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University,Tianjin 300071 China;

    MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University,Tianjin 300071 China;

    Institute of Agro-Environmental Protection, The Ministry of Agriculture, Tianjin 300191, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    HBCD diastereomer; Accumulation; Enantioselectivity; Algae;

    机译：六溴环十二烷非对映异构体;积累;对映选择性;藻类;

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