施用EDDS对海州香薷铜锌吸收的强化作用及淋溶风险  

Enhancement of EDDS on Cu and Zn uptake by Elsholtzia splendens and its environmental risk

作　　者：裘希雅[1] 孙小峰[2] 何旭华[1] 蒋玉根[1] 吴龙华[2] 胡宁静[2] 骆永明[2] 戴学龙[1] 

机构地区：[1]浙江省富阳市农业技术推广中心土壤肥料工作站,浙江富阳311400 [2]中国科学院南京土壤研究所土壤与环境生物修复研究中心

出　　处：《浙江农业学报》2006年第2期86-89,共4页Acta Agriculturae Zhejiangensis

基　　金：国家973重点基础研究发展规划项目(2002CB41080-9);国家863高技术研究发展计划项目(2004AA649050)资助

摘　　要：通过田间盆栽试验,研究了加入易降解螯合剂EDDS后污染土壤及修复植物海州香薷地上部Cu和Zn含量的变化,及地下50 cm处渗滤水中Cu、Zn浓度。结果显示,添加EDDS提高了海州香薷对Cu和Zn的吸收量,同时增加了50 cm土层处渗滤液的Cu和Zn浓度,但是渗滤液中重金属浓度仍低于国家Ⅲ类地下水水质标准,表明EDDS对于海州香薷吸收铜、锌有一定的促进作用,且对于地下水的潜在淋滤风险较小。Field pot and leaching experiments were conducted to study the enhancement of ethylene diamine disuccinic acid （EDDS） on soil ammonia nitrate extractable Cu and Zn concentrations, and Elsholtzia splendens plant＇ Cu and Zn uptake, Results showed that EDDS addition improved plant Cu and Zn uptake by Elsholtzia splendens and increased Cu and Zn concentrations at soil depths of 0- 10 cm and 10 - 20 cm. Cu and Zn concentrations in leachate from 50 cm soil, but they were still lower than the state ground water criteria of grade three. This suggested that potential enviromental risk of EDDS application on Cu and Zn leaching to ground water may be very low.

关 键 词：海州香薷(Elsholtzia splendens) EDDS 植物修复 环境风险 

分 类 号：X820.6[环境科学与工程—环境工程]