| 几种螯合剂对污染土壤的重金属提取效率的研究 |
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| 引用本文： | 陈晓婷,王欣,陈新.几种螯合剂对污染土壤的重金属提取效率的研究[J].江苏环境科技,2005,18(2):9-10,13. |
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| 作者姓名： | 陈晓婷 王欣 陈新 |
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| 作者单位： | 1. 福建农林大学生命科学学院,福建,福州,350002
2. 福建农林大学资源与环境学院,福建,福州,350002 |
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| 基金项目： | 福建省教委资助项目(K02061) |
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| 摘 要： | 在Cd,Pb污染的土壤上,采用批提取实验(batchexperiment),研究了几种螯合剂和不同的水土比对重金属提取效率的影响。结果表明:螯合剂对Cd的提取效率随着各淋洗剂浓度的提高而逐渐提高,相同浓度下各淋洗剂的提取效率大小顺序依次为EDTA>DTPA>NTA>PA>CA>CD>HCl。随水土比提高,相应的提取效率也提高。几种淋洗剂中只有EDTA对Pb和Cd都能达到理想的淋洗效果。
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| 关 键 词： | 重金属污染的土壤 土壤淋洗 水土比 提取效率 |
| 文章编号： | 1004-8642(2005)02-0009-02 |
Study on the Exaction Efficiency of Heavy Metals by Chelates |
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| CHEN Xiao-ting,WANG Xin,CHEN Xin.Study on the Exaction Efficiency of Heavy Metals by Chelates[J].Jiangsu Environmental Science and Technology,2005,18(2):9-10,13. |
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| Authors: | CHEN Xiao-ting WANG Xin CHEN Xin |
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| Abstract: | Effect of different concentrations and different water to soil ratios on the extraction efficiency of heavy metals was studied by batch experiment procedures. The results showed that the extraction efficiency of Cd increased with the concentrations of eluant elevated. The extraction rate of Cd is EDTA>DTPA>NTA>PA>CA>CD>HCl under the same concentration. With the elevation of water to soil ratios , the extract rate improved. Only EDTA can be used as a good substance to extract Cd and Pb simultaneously. |
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| Keywords: | Heavy metal contaminated soil Soil leaching Water to soil ratio Extraction efficiency |
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