估算多氯联苯在鱼体中生物富集因子的片段常数法

胡海瑛; 卢晓霞; 陶澍

环境化学

, ,

胡海瑛, 卢晓霞, 陶澍. 估算多氯联苯在鱼体中生物富集因子的片段常数法[J]. 环境化学, 2000, 19(2): 159-164.

引用本文:

胡海瑛, 卢晓霞, 陶澍. 估算多氯联苯在鱼体中生物富集因子的片段常数法[J]. 环境化学, 2000, 19(2): 159-164.

Hu Haiying, La Xiaoxia, Tao Shu. A FRAGMENT CONSTANT METHOD FOR PREDICTION OF BCF OF PCB IN FISH[J]. Environmental Chemistry, 2000, 19(2): 159-164.

Citation:

Hu Haiying, La Xiaoxia, Tao Shu. A FRAGMENT CONSTANT METHOD FOR PREDICTION OF BCF OF PCB IN FISH[J]. Environmental Chemistry, 2000, 19(2): 159-164.

估算多氯联苯在鱼体中生物富集因子的片段常数法

1.
北京大学城市与环境学系, 北京, 100871
基金项目:
国家自然科学基金重点项目(49632060)

国家杰出青年基金(49525102)资助项目

A FRAGMENT CONSTANT METHOD FOR PREDICTION OF BCF OF PCB IN FISH

1.
Department of Urban and Environmental Sciences, Peking University, Beijing, 100871
Fund Project:

摘要: 根据40种PCB的实测数据建立了估算PCB在鱼体中生物富集系数的片段常数模型.建模化合物的lgBCF在2.65—5.97之间,lgKow则在3.88—8.18之间.由于特定氯取代位的影响以及在此Kow范围内BCF与化合物憎水性之间的非线性关系,简单的片段常数模型不能有效估算BCF.通过引入特定结构因子对化合物空间结构对生物富集的影响进行校正,建立了BCF的非线性片段常数估算模型,模型可决系数0.889,平均绝对误差0.223个对数单位.采用jackknife方法对模型稳健性进行检验.
- 片段常数 /
- 多氯联苯(PCB) /
- 生物富集因子 /
- jackknife检验
Abstract: A fragment constant model was developed for predicting PCB's BCF in fish based on measured BCFs of 40 congeners covering a wide range of physiochemical properties. Their log transformed 1-octoalcohol/water partition coefficients (Kow) vary from 3.88 to 8.18. The steric effect of molecular size, which usually causes a nonlinear relationship between IgBCF and lgKow, was adjusted by introducing two stuctural factors. A modified jackknife test was performed to validate model robustness.
- fragment constant /
- BCF /
- PCBs /
- jackknife test

点击查看大图

计量

文章访问数: 597
HTML全文浏览数: 597
PDF下载数: 262
施引文献: 0

胡海瑛, 卢晓霞, 陶澍. 估算多氯联苯在鱼体中生物富集因子的片段常数法[J]. 环境化学, 2000, 19(2): 159-164.

引用本文:

胡海瑛, 卢晓霞, 陶澍. 估算多氯联苯在鱼体中生物富集因子的片段常数法[J]. 环境化学, 2000, 19(2): 159-164.

Hu Haiying, La Xiaoxia, Tao Shu. A FRAGMENT CONSTANT METHOD FOR PREDICTION OF BCF OF PCB IN FISH[J]. Environmental Chemistry, 2000, 19(2): 159-164.

Citation:

Hu Haiying, La Xiaoxia, Tao Shu. A FRAGMENT CONSTANT METHOD FOR PREDICTION OF BCF OF PCB IN FISH[J]. Environmental Chemistry, 2000, 19(2): 159-164.

估算多氯联苯在鱼体中生物富集因子的片段常数法

1. 北京大学城市与环境学系, 北京, 100871

收稿日期: 1994-09-04

基金项目:

国家自然科学基金重点项目(49632060)

国家杰出青年基金(49525102)资助项目

关键词:

摘要: 根据40种PCB的实测数据建立了估算PCB在鱼体中生物富集系数的片段常数模型.建模化合物的lgBCF在2.65—5.97之间,lgKow则在3.88—8.18之间.由于特定氯取代位的影响以及在此Kow范围内BCF与化合物憎水性之间的非线性关系,简单的片段常数模型不能有效估算BCF.通过引入特定结构因子对化合物空间结构对生物富集的影响进行校正,建立了BCF的非线性片段常数估算模型,模型可决系数0.889,平均绝对误差0.223个对数单位.采用jackknife方法对模型稳健性进行检验.

English Abstract

A FRAGMENT CONSTANT METHOD FOR PREDICTION OF BCF OF PCB IN FISH

1. Department of Urban and Environmental Sciences, Peking University, Beijing, 100871

Received Date: 1994-09-04

Fund Project:

Keywords:

fragment constant /
BCF /
PCBs /
jackknife test

Abstract: A fragment constant model was developed for predicting PCB's BCF in fish based on measured BCFs of 40 congeners covering a wide range of physiochemical properties. Their log transformed 1-octoalcohol/water partition coefficients (Kow) vary from 3.88 to 8.18. The steric effect of molecular size, which usually causes a nonlinear relationship between IgBCF and lgKow, was adjusted by introducing two stuctural factors. A modified jackknife test was performed to validate model robustness.

全文HTML

参考文献 (0)

下载: 全尺寸图片幻灯片

返回文章

用微信扫码二维码

分享至好友和朋友圈

估算多氯联苯在鱼体中生物富集因子的片段常数法

A FRAGMENT CONSTANT METHOD FOR PREDICTION OF BCF OF PCB IN FISH

计量

出版历程

估算多氯联苯在鱼体中生物富集因子的片段常数法

English Abstract

A FRAGMENT CONSTANT METHOD FOR PREDICTION OF BCF OF PCB IN FISH

全文HTML

目录