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| 几种萃取剂对土壤中重金属生物有效部分的萃取效果 | |
| 引用本文： | 刘玉荣,党志,尚爱安,文震. 几种萃取剂对土壤中重金属生物有效部分的萃取效果[J]. 生态环境, 2002, 11(3): 245-247 |
| 作者姓名： | 刘玉荣 党志 尚爱安 文震 |
| 作者单位： | 1. 中国科学院地球化学研究所,环境地球化学国家重点实验室,贵州,贵阳,550002 2. 华南理工大学化工学院,广东,广州,510641 3. 华东理工大学环境工程系,上海,200237 |
| 基金项目： | 国家自然科学基金(49873033)，广东省环保局项目(2001-27) |
| 摘 要： | 采用6种萃取剂:pH=7的0.01mol/L CaCl_2、pH=7.3的0.005mol/L DTPA+0.1mol/L TEA(三乙醇胺)+0.01mol/L CaCl_2O.1mol/L NaNO_3、0.43mol/L HOAc、pH=7的0.05mol/L EDTA和pH=4.65的0.5mol/L NH_4OAc+0.02mol/L EDTA浸取液.对污染土壤中的重金属Cu、Zn、Cd、Pb、的进行了萃取,并比较了萃取剂的萃取能力。实验结果表明,HOAc、EDTA以及NH_4OAc-EDTA萃取各种重金属的能力远远大于其它几种萃取剂的萃取能力,是比较理想的萃取剂。 |
| 关 键 词： | 重金属 化学萃取法 生物有效性 |
| 文章编号： | 1008-181X(2002)03-0245-03 |
| 修稿时间： | 2001-10-16 |
Comparing several extractants for extracting bioavailable part of heavy metals in soils |
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| LIU Yu-rong,DANG Zhi,SHANG Ai-an,WEN Zhen: State Key Laboratory of Environmental Geochemistry. Comparing several extractants for extracting bioavailable part of heavy metals in soils[J]. Ecology and Environmnet, 2002, 11(3): 245-247 | |
| Authors: | LIU Yu-rong DANG Zhi SHANG Ai-an WEN Zhen: State Key Laboratory of Environmental Geochemistry |
| Affiliation: | LIU Yu-rong,DANG Zhi,SHANG Ai-an,WEN Zhen1: State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Guiyang 550002,China, 2: Department of Applied Chemistry,South China University of Technology,Guangzhou 510640,China, 3: Department of Environmental Engineering,East China University of Technology,Shanghai 200237,China |
| Abstract: | Heavy metals were extracted with six selected solutions and the extraction results were compared .The six solutions were : 0.01 mol/L CaCl2 (pH=7), 0.005 mol/L DTPA+0.1 mol/L TEA+0.01 mol/L CaCl2(pH=7.3), 0.1 mol/L NaNO3, 0.43 mol/L HOAc, pH=7 0.05 mol/L EDTA( pH=7) and 0.5 mol/L NH4OAc+0.02 mol/L EDTA( pH=4.65). It was showed that the extraction results of HOAc, EDTA and NH4OAc-EDTA were much better than other extractants, and they were suitable to extract the bio-effective parts of heavy metals in soils . |
| Keywords: | heavy metal bioavailability chemical extraction solution |
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