摘要
因含砷化学品的使用引发重大砷污染事件时有发生,而土壤是其最大的受害者。土壤中的砷会在农作物体内富集影响其生长并可通过食物链进入人体对人类健康造成的严重的危害。因此有必要寻找一种快速高效的方法对砷污染土壤进行修复。化学萃取修复技术具有可修复严重砷污染土壤,效率高,修复时间短,操作简单等优点,目前应用的较广泛。本文综述了化学萃取技术的原理、步骤、过程以及砷污染土壤的化学萃取修复技术中一些对砷萃取效率的影响因素,指出了化学萃取修复技术可能的改进方向为砷污染修复的进一步研究提供了理论依据。
Arsenic in soil will be accumulated in crops and influence the growth of them, and can also enter human body through the food chain and lead to serious harm to human health. So a fast and efficient method is needed to remediate As-contaminated soil. Chemical extraction technique could remediate severe arsenic-contaminated soil efficiently and the repair time is relatively short compared with phytoremediation. Besides, the operation is simple, so it is widely used at present. In this paper, the principle and processes of chemical extraction were given, as well as the factors affecting arsenic extraction efficiency and available improvement directions of chemical extraction technique, which provides a theoretical foundation for further research on the remediation of arsenic-contaminated soil.
出处
《土壤通报》
CAS
CSCD
北大核心
2013年第1期252-256,共5页
Chinese Journal of Soil Science
基金
挥发性有机物污染场地土壤气提修复技术设备研发与示范(863计划SQ2009AA06XK1482462)
农村人居环境综合整治关键技术集成与配套政策研究(国家环保公益专项201109024)资助
关键词
砷
土壤
化学萃取
修复
Arsenic
Soils
Chemical extraction
Remediation
