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首页> 外文期刊>Environmental Science & Technology >Effects of Chain Length, Chlorination Degree, and Structure on the Octanol-Water Partition Coefficients of Polychlorinated n-Alkanes
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Effects of Chain Length, Chlorination Degree, and Structure on the Octanol-Water Partition Coefficients of Polychlorinated n-Alkanes

机译：链长，氯化度和结构对多氯正构烷烃辛醇-水分配系数的影响

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摘要

Log octanol-water partition coefficients (log K0J) of 40 synthesized polychlorinated n-alkanes (PCAs) with different chlorination degrees were determined using reversed-phase high performance liquid chromatography (RP-HPLC). In addition, log K^ values of a technical mixture namely Ceredor 63L as well as IS individual in house synthesized C10, Cn, andCi2 chloroalkanes with known chlorine positions were estimated. Based on these results, the effects of chain length, chlorination degree, and structure were explored. The estimated log Kow values ranged from 4.10 (polychlorinated n-decanes with 50.2% chlorine content) to 11.34 (polychlorinated n-octacosanes with 54.8% chlorine content) for PCAs and from 3.82 (1,2,5,6,9,10-hexachlorodecane) to 7.75 (l,l,13»9,ll,ll,H-octachlorododecane) for the individual chloroalkanes studied. The results showed that log Kow value was influenced linearly at a given chlorine content by chain length, while a porynominal effect was observed in dependence on the chlorination degree of an alkane chain. Chlorine substitution pattern influenced markedly the log K^ value of chloroalkanes,
机译：使用反相高效液相色谱（RP-HPLC）测定了40种不同氯化度的合成多氯正构烷烃（PCA）的对数辛醇-水分配系数（log K0J）。另外，估算了在已知氯位置的内部合成的C10，Cn和C12氯代烷烃中，Ceredor 63L技术混合物以及IS个体的log K ^值。基于这些结果，探讨了链长，氯化度和结构的影响。 PCA的估计log Kow值范围从4.10（氯含量为50.2％的多氯正癸烷）到11.34（氯含量为54.8％的多氯正辛烷）和3.82（1,2,5,6,9,10-对于所研究的各个氯代烷烃，将其含量提高到7.75（l，l，13»9，ll，ll，H-八氯十二烷）。结果表明，在链长给定的氯含量下，log Kow值受到线性影响，而烷烃链的氯化程度依赖于线性效应。氯取代模式显着影响氯代烷烃的log K ^值，

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  • 来源
    《Environmental Science & Technology》 |2011年第7期|p.2842-2849|共8页
  • 作者

    Bettina Hilger; Hermann Fromme; Wolfgang Voelkel; Mehmet Coelhan;

  • 作者单位

    Technische Universitat Miinchen, Research Center Weihenstephan for Brewing and Food Quality, Freising, Germany,Bavarian Health and Food Safety Authority, Munich, Germany;

    Bavarian Health and Food Safety Authority, Munich, Germany;

    Bavarian Health and Food Safety Authority, Munich, Germany;

    Technische Universitat Miinchen, Research Center Weihenstephan for Brewing and Food Quality, Freising, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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