可降解氨基羧酸型螯合剂在重金属污染土壤修复中的应用进展

Progress in Application of Degradable Aminocarboxylic Acid Chelating Agent in Remediation of Heavy Metal Contaminated Soil

在修复重金属污染土壤时,使用螯合剂可能会出现一定的安全隐患。因为选择不可降解螯合剂会导致地下水和地表水出现二次污染。而在环保法规的影响下,全球各企业开始生产生物可降解螯合剂,因其安全性更高,所以逐渐取代了非生物降解型螯合剂,如DTPA、EDTA合剂在重金属污染土壤修复中的应用进展。

In the remediation of heavy metal contaminated soil,the use of chelating agents may present some potential safety hazards.Because the choice of non-degradable chelating agent will lead to secondary pollution of groundwater and surface water.Under the influence of environmental regulations,companies around the world began to produce biodegradable chelating agents.Because of their higher safety,they gradually replaced non-biodegradable chelating agents,such as DTPA,EDTA and so on.The application of degradable aminocarboxylic acid chelating agents in remediation of heavy metal contaminated soil was reviewed in this paper.