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多氯代二苯并呋喃的正辛醇/水分配系数与分子结构的定量关系
引用本文:秦正龙.多氯代二苯并呋喃的正辛醇/水分配系数与分子结构的定量关系[J].徐州师范大学学报(自然科学版),2008,26(3):68-71.
作者姓名:秦正龙
作者单位:徐州师范大学,化学化工学院,江苏,徐州,221116
基金项目:江苏省高校自然科学基金,徐州师范大学校科研和教改项目
摘    要:以定位基指数(G)和原子距离指数(S)作为多氯代二苯并呋喃(PCDFs)的分子结构描述符,并用G,S与51种PCDFs的正辛醇/水分配系数(lgKow)关联,建立的数学模型为:lgKow=4.3191+0.3681G^0.65+0.3057S^3(n=51,R=0.9289,F=151.0,s=0.1776),计算值与实验值的平均误差为0.1429,明显优于文献方法.对未有实验数据的85个PCDFs的lgKow进行了预测.

关 键 词:多氯代二苯并呋喃  分子结构参数  正辛醇/水分配系数  定量构效关系

Study on the Relationship Between the Molecular Structure and the lg Kow of PCDFs
QIN Zheng-long.Study on the Relationship Between the Molecular Structure and the lg Kow of PCDFs[J].Journal of Xuzhou Normal University(Natural Science Edition),2008,26(3):68-71.
Authors:QIN Zheng-long
Institution:QIN Zheng-long (School of Chemistry & Chemical Engineering, Xuzhou Normal University, Xuzhou, Jiangsu, 221116, China)
Abstract:Orientating group index (G) and atom distance index (S) are adopted to describe the molecular structure of polychlorinated dibenzofurans (PCDFs). The regression equation between G,S and n-octanol/water partition coefficient (lg Kow) of PCDFs are proposed as follows:lg Kow=4. 319 1 +0. 368 1G^0.65 +0. 305 7S^3(n=51, R=0. 928 9, F=151.0, s=0. 177 6). The absolute average deviation between calculated values and experimental data is 0. 142 9 for 51 PCDFs. The lg Kow of 85 PCDFs without experimental values are predicted with the model.
Keywords:polychlorinated dibenzofuran  molecular structure parameter  n-octanol/water partition coefficient  quantitative structure-property relationship
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