有机氯农药土-气交换的研究进展

Research Progress on Soil-air Exchange of Organochlorine Pesticides

土-气交换是控制有机氯农药(OCPs)在地区和全球尺度上迁移传输和环境归宿的关键过程。本文对OCPs土-气交换的研究方法、交换现状以及影响因素进行了综述。研究方法主要有土-气分配系数(KSA)、逸度商(fS/fA)及逸度比率(ff)、土-气交换通量、农药手性分析以及环境模型等;OCPs土-气交换现状表明,土壤仍是OCPs主要储存地;而影响OCPs土-气交换的主要因素是温度、土壤有机质以及化合物的辛醇-空气分配系数(KOA)。最后,针对目前OCPs土-气交换研究中存在的不足,为深入开展该研究提出了思路和研究方向。

This paper reviews the research method,research status and influencing factors of organochlorine pesticides（OCPs）in soil-air exchange.The research methods for soil-air exchange are mainly soil-air partition coefficient（KSA）,fugacity ratio/quotient（fS/fA）and fugacity fraction（ff）,soil-air flux,chiral signatures of pesticides and environmental model.Soil-air exchange situation shows that the soil is still the main storage for OCPs.The main factors influencing the soil-air exchange of OCPs are temperature,soil organic matter and octanol-air distribution coefficient（KOA）.Meanwhile,the paper also discusses the insufficiency in research of OCPs,which provides ideas and research directions for further studies.