| Measurement of free heavy metal ion concentrations in soils using Donnan membrane technique |
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| 作者姓名： | 易丽 洪业汤 翁丽萍 朱咏煊 |
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| 作者单位： | [1]TheStateKeyLaboratoryofEnvironmentalGeochemistry,InstituteofGeochemistry,ChineseAcademyofSciences,Guiyang550002,China [2]DepartmentofEnvironmentalScience,Sub-departmentofSoilQuality,WageningenUniversity,P.0.Box8005,6700ECWageningen,TheNetherlands |
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| 摘 要： | In natural systems heavy metals are present in very low concentrations (less than micro-molar) , so precise measurement of the free metal ions is difficult. Recently, a new method has been developed called the Donnan membrane technique (DMT). Several heavy metals could be measured simultaneously using this method. Furthermore, all the metals did not interfere with each other, and the balance between the measured system and the surrounding condition could not be disturbed. Improvements were made according to the internal condition. The free heavy metal ion concentrations were measured in different systems using the improved method, and satisfied results have been obtained.
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| 关 键 词： | 土壤化学 自由重金属离子 湖南 生态监测 环境污染 |
Measurement of free heavy metal ion concentrations in soils using Donnan membrane technique |
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| Yi Li,Hong Yetang,Weng Liping,Zhu Yongxuan.Measurement of free heavy metal ion concentrations in soils using Donnan membrane technique[J].Chinese Journal of Geochemistry,2005,24(2):184-188. |
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| Authors: | Yi Li Hong Yetang Weng Liping Zhu Yongxuan |
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| Institution: | (1) The State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China;(2) Graduate School, Chinese Academy of Sciences, 100039 Beijing, China;(3) Department of Environmental Science, Sub-department of Soil Quality, Wageningen University, P. O. Box 8005, 6700 EC Wageningen, The Netherlands |
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| Abstract: | In natural systems heavy metals are present in very low concentrations (less than micro-molar), so precise measurement of the free metal ions is difficult. Recently, a new method has been developed called the Donnan membrane technique (DMT). Several heavy metals could be measured simultaneously using this method. Furthermore, all the metals did not interfere with each other, and the balance between the measured system and the surrounding condition could not be disturbed. Improvements were made according to the internal condition. The free heavy metal ion concentrations were measured in different systems using the improved method, and satisfied results have been obtained. |
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| Keywords: | soil free heavy metal ion Donnan Membrane Technique (DMT) improvement |
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