期刊论文

中文

中国农学通报

1000-6850

2013

29

2

148-153

10.3969/j.issn.1000-6850.2013.02.026

环保部公益项目“重金属污染耕地农业利用风险控制技术研究”（201009047）； 湖南省环境科学重点学科建设项目；

本校为第一机构

为了研究不同提取剂对不同类型土壤重金属的提取效果,选用3种提取剂(DTPA、HCl、EDTA)提取2种母质(红壤、紫色土)发育的稻田土壤(黄泥田、紫泥田)重金属Zn、Pb、Cd和Cu的含量,比较它们的提取效果。结果表明,提取剂的提取量和提取率大小有明显差异。DTPA提取Zn、Pb、Cd、Cu的含量均值分别为135.88、167.20、5.09、17.63mg/kg;HCl提取Zn、Pb、Cd、Cu的含量均值分别为244.79、299.97、7.74、28.75mg/kg;EDTA提取Zn、Pb、Cd、Cu的含量均值分别为220.31、490.33、7.22、35.46mg/kg。3种提取剂对重金属Zn、Cd提取量大小为HCl>EDTA>DTPA,对Pb、Cu提取量大小为EDTA>HCl>DTPA。从元素的提取率看,除黄泥田...

The aim of this paper was to study the extraction efficiency of different extracting agents for heavy metals in different types of soil.Three extracting agents （DTPA,HCl,EDTA） were used to extract heavy metals （Zn,Pb,Cd,Cu） in yellow paddy soil and purple paddy soil,and the extraction efficiency of them were compared.The results showed that,it had significantly difference in extraction amount and extraction rate of different extracting agents to the different types of soil.The average content of Zn,Pb,Cd,Cu which were extracted by DTPA were...