杨蕾;罗翔;王雅;张亚南;陈景文;

• 1:工业生态与环境工程教育部重点实验室大连理工大学环境学院

摘要(Abstract)：

污染物的被动采样材料-水分配系数(K_(PW))是衡量被动采样器性能和进行优化的一个重要指标,由于实验方法难以逐个测定众多污染物的K_(PW)值,有必要发展其KP W预测方法。本研究选取聚乙烯(PE)、聚丙烯酸酯(PA)和硅橡胶(SR)3类常用的被动采样材料共7种,采用多元线性回归分析方法构建可用于K_(PW)预测的定量构效关系(QSAR)模型。所构建的QSAR模型具有良好的拟合优度(R2a dj介于0.806~0.989)、稳健性(Q2L O O和Q2B O O T分别介于0.786~0.988和0.773~0.801)和预测能力(R_(ext)~2和Q_(ext)~2分别介于0.769~0.989和0.757~0.982),可以用于预测烷烃、烯烃、芳香类、醇类、酮类、酯类、醚类等多种有机污染物的log KP W值。有机污染物的log KP W与分子Mc Gowan体积(Vx)、氯原子个数(n Cl)、环周长(Rperim)、多重键个数(n BM)、N,O极性贡献的拓扑极性表面积(TPSA(NO))、[-N(=)=]结构个数(Ndds N)和羟基个数(nROH)等参数有关。

关键词(KeyWords)： 被动采样材料-水分配系数;聚乙烯;聚丙烯酸酯;硅橡胶;定量构效关系

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21325729;21661142001)

作者(Author): 杨蕾;罗翔;王雅;张亚南;陈景文;

Email:

DOI:

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