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.
出处
《浙江农业学报》
CSCD
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
