| 周艳明*，曲甍甍，姜辉，刘学. 欧美农药环境降解动力学评估方法比较[J]. 生态毒理学报, 2017, 12(4): 59-64 |
| 欧美农药环境降解动力学评估方法比较 |
| Comparison of Evaluation Method of Pesticide Environment Degradation Kinetics Used in EU and NAFTA |
| 投稿时间：2017-05-16 修订日期：2017-07-10 |
| DOI：10.7524/AJE.1673-5897.20170516002 |
| 中文关键词: 农药 降解动力学 非一级动力学模型 评估方法 |
| 英文关键词:pesticide degradation kinetics non first order model evaluation method |
| 基金项目:2016年农业行业标准制订和修订及农产品质量认证项目 |
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| 中文摘要: |
| 农药在环境中的降解行为是评估农药环境安全性的基础，农药的降解动力学通常以一级动力学模型描述。现有的环境暴露模型也均需要输入一级动力学模型的农药在土壤中50%消失时间(DT50)。但有时一级动力学模型不适用于描述农药在环境中，特别是土壤中的降解。因此欧盟和北美自由贸易区已发布了一系列关于使用非一级动力学模型计算DT50的导则。介绍了欧美降解动力学评估方法，并用多组降解数据比较了2种评估方法的区别。 |
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| 英文摘要: |
| Degradation of pesticide in the environment is a key factor in pesticide environmental risk assessment, and the degradation kinetics is often described by single first-order kinetics. The currently used exposure models require a first order 50% disappearance time (DT50). However, single first order kinetics may not appropriately describe the pesticide degradation behavior in environment, especially in soil. In these cases, European Union (EU) and North American Free Trade Area (NAFTA) has developed a series of guidance documents including the use of non-first order kinetics in fitting pesticide degradation data to determine DT50. This paper presents an introduction of kinetics analysis procedures used by EU and NAFTA, and a comparison of the two approaches using various data sets. |
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