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首页> 外文期刊>Environmental Science & Technology >Improved Prediction of Octanol-Water Partition Coefficients from Liquid-Solute Water Solubilities and Molar Volumes
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Improved Prediction of Octanol-Water Partition Coefficients from Liquid-Solute Water Solubilities and Molar Volumes

机译:改进的预测从液体溶解的水溶解度和摩尔体积的辛醇-水分配系数

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摘要

A volume-fraction-based solvent-water partition model for dilute solutes,in which the partition coefficient shows a dependence on solute molar volume (V),is adapted to predict the octanol-water partition coefficient (K_(ow)) from the liquid or supercooled-liquid solute water solubility (S_w),or vice versa.The established correlation is tested for a wide range of industrial compounds and pesticides (e.g.,halogenated aliphatic hydrocarbons,alkylbenzenes,halogenated benzenes,ethers,esters,PAHs,PCBs,organochlorines,organophosphates,carbamates,and amides-ureas-triazines),which comprise a total of 215 test compounds spanning about 10 orders of magnitude in S_w and 8.5 orders of magnitude in K_(ow).Except for phenols and alcohols,which require special considerations of the K_(ow) data,the correlation predicts the K_(ow) within 0.1 log units for most compounds,much independent of the compound type or the magnitude in K_(ow).With reliable S_w and V data for compounds of interest,the correlation provides an effective means for either predicting the unavailable log K_(ow) values or verifying the reliability of the reported log K_(ow) data.
机译:基于体积分数的稀溶质溶剂-水分配模型适用于从液体中预测辛醇-水分配系数(K_(ow)),其中分配系数与溶质摩尔体积(V)有关。或反之亦然。反之亦然。已建立的相关性已针对各种工业化合物和农药(例如,卤代脂肪烃,烷基苯,卤代苯,醚,酯,PAH,PCBs,有机氯)进行了测试。 ,有机磷酸酯,氨基甲酸酯和酰胺-脲-三嗪)组成,总共215种测试化合物的S_w范围约为10个数量级,K_(ow)范围约为8.5个数量级。酚类和醇类除外,这需要特殊考虑根据K_(ow)数据,相关性可预测大多数化合物的K_(ow)在0.1 log单位内,而与化合物类型或K_(ow)的大小无关。对于可靠的S_w和V数据,相关性为预测不可用的日志K_(ow)值或验证所报告的日志K_(ow)数据的可靠性提供了一种有效的方法。

著录项

  • 来源
    《Environmental Science & Technology》 |2005年第22期|p.8840-8846|共7页
  • 作者单位

    U.S.Geological Survey,Box 25046,Mail Stop 408,Federal Center,Denver,Colorado 80225,Department of Environmental and Molecular Toxicology,Oregon State University,Corvallis,Oregon 97331,and Department of Chemistry,Kent State University,Kent,Ohio 44242;

    U.S.Geological Survey,Box 25046,Mail Stop 408,Federal Center,Denver,Colorado 80225,Department of Environmental and Molecular Toxicology,Oregon State University,Corvallis,Oregon 97331,and Department of Chemistry,Kent State University,Kent,Ohio 44242;

    U.S.Geological Survey,Box 25046,Mail Stop 408,Federal Center,Denver,Colorado 80225,Department of Environmental and Molecular Toxicology,Oregon State University,Corvallis,Oregon 97331,and Department of Chemistry,Kent State University,Kent,Ohio 44242;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
  • 关键词

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