| 用QSAR模型预测苯酚类化合物对发光菌的联合毒性 |
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| 引用本文： | 苏丽敏,袁星,丁蕴铮.用QSAR模型预测苯酚类化合物对发光菌的联合毒性[J].中国环境科学,2003,23(2):0-0. |
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| 作者姓名： | 苏丽敏 袁星 丁蕴铮 |
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| 作者单位： | 1.东北师范大学环境科学系 吉林长春130024;2.中国科学院沈阳应用生态研究所陆地生态过程开放实验室 辽宁沈阳110016 |
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| 基金项目： | 教育部科学技术研究重点项目(01063)，中国科学院沈阳应用生态研究所陆地生态过程开放实验室基金资助项目 |
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| 摘 要： | 测定了苯酚与11种取代苯酚对发光菌的单一毒性和毒性单位比为1:4,1:1,4:1二元混合物的联合毒性.采用相加指数法对联合毒性进行了评价,结果表明,苯酚和取代苯酚的二元混合物对发光菌的联合作用以相加作用为主.在此基础上,根据12种苯酚类化合物的单一毒性建立了QSAR方程: -lgEC50=6.158-0.279pKa,对混合物中取代苯酚的毒性进行了预测,预测值与实测值吻合较好.
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| 关 键 词： | 定量结构-活性相关 发光菌 联合毒性 相加作用 |
| 文章编号： | 1000-6923(2003)02-0148-04 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2002年8月26日 |
Use of QSAR model to predict the joint toxicity of phenols to photobacterium phosphoreum |
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| SU Li-min,YUAN Xing,DING Yun-zheng.Use of QSAR model to predict the joint toxicity of phenols to photobacterium phosphoreum[J].China Environmental Science,2003,23(2):0-0. |
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| Authors: | SU Li-min YUAN Xing DING Yun-zheng |
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| Institution: | SU Li-min1,2,YUAN Xing1,DING Yun-zheng1 |
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| Abstract: | The single toxicity of phenol and 11 substitutional phenols and joint toxicity of binary mixtures in the toxic unit ratios of 1:1,1:4,4:1 to photobacterium phosphoreum were determined. Additive index method was adopted to evaluate the joint toxicity. The result showed that the joint actions of the binary mixtures of phenol and substitutional phenols were mainly additivity. On this basis, the QSAR equation (-lgEC50 = 6.158-0.279pKa) built from the single toxicity of 12 phenols was used to predict the toxicity of substitutional phenols in the mixtures. The predictive and measured values coincided rather well. |
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| Keywords: | quantitative structure activity relationship (QSAR) photobacterium phosphoreum joint toxicity additivity |
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