太湖水体中5种有机磷农药混合物生态风险评价

雷昌文; 曹莹; 周腾耀; 张亚辉; 曾鸿鹄; 刘征涛

doi:10.7524/AJE.1673-5897.20121211001

1. 桂林理工大学环境科学与工程学院, 桂林, 541004;

2. 环境基准与风险评估国家重点实验室, 中国环境科学研究院, 北京, 100012

作者简介: 雷昌文(1987-),男,硕士生,研究方向:混合物的联合预测与生态风险评价;E-mail:leichangwen@gmail.com

基金项目:

国家水体污染控制与治理科技重大专项(2012ZX07501-003)

国家自然科学基金(Nos.51268008.21207024)

中图分类号: X171.5

Ecological Risk Assessment of Five Organophosphorus Pesticides Mixture in Taihu Lake

1. College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China;

2. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Fund Project:

摘要: 有机磷农药是一类广泛分布于我国水环境中的污染物,即使在水体中的污染水平处于规定"安全标准"之下,其联合暴露产生的风险仍有可能威胁水生生态安全。采用基于浓度加和模型与生物敏感度分布曲线的混合物风险商法,评价了太湖水体中敌敌畏、对硫磷、甲基对硫磷、马拉硫磷和乐果5种有机磷农药混合物产生的生态风险。结果表明:2003~2004年期间3个不同时期太湖水体中5种有机磷农药的混合物生态风险商(RQ_m)均大于1,有机磷农药混合物在2003~2004年期间对太湖水生生物构成了一定威胁。

Abstract: Organophosphorus (OP) pesticides are widely distributed in the aquatic environment in China. Even if the levels of single OP pesticides in water are lower than the safety criteria, the ecological risk of pesticide concurrently exposed as the mixture may threaten aquatic ecosystem. In this study, the method of risk quotient (RQ) for mixtures which was based on the concentration addition model and the species sensitivity distribution curve was applied to assess the ecological risk of five OP pesticides mixture including dichlorvos, parathion, methyl parathion, malathion and dimethoate in Taihu Lake. The results indicated that the risk quotients of OP pesticide mixtures (RQ_m) were greater than 1 in the three different periods from 2003 to 2004, demonstrating that the OP pesticide mixtures in Taihu Lake had posed a certain ecological risk for the aquatic organisms.

Key words:

太湖水体中5种有机磷农药混合物生态风险评价

作者简介: 雷昌文(1987-),男,硕士生,研究方向:混合物的联合预测与生态风险评价;E-mail:leichangwen@gmail.com
1. 桂林理工大学环境科学与工程学院, 桂林, 541004;

2. 环境基准与风险评估国家重点实验室, 中国环境科学研究院, 北京, 100012

收稿日期: 2012-12-11

基金项目:

国家水体污染控制与治理科技重大专项(2012ZX07501-003)

国家自然科学基金(Nos.51268008.21207024)

关键词:

Ecological Risk Assessment of Five Organophosphorus Pesticides Mixture in Taihu Lake

1. College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China;

2. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Received Date: 2012-12-11

Fund Project:

Keywords:

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