道南膜技术测定CaCl2溶液体系中汞的化学形态

张红振; 骆永明; 宋静; 吴龙华; 尹雪斌

环境化学

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张红振, 骆永明, 宋静, 吴龙华, 尹雪斌. 道南膜技术测定CaCl2溶液体系中汞的化学形态[J]. 环境化学, 2010, 29(3): 502-507.

引用本文:

张红振, 骆永明, 宋静, 吴龙华, 尹雪斌. 道南膜技术测定CaCl2溶液体系中汞的化学形态[J]. 环境化学, 2010, 29(3): 502-507.

ZHANG Hong-zhen, LUO Yong-ming, WENG L P SONG Jing, WU Long-hua, YIN Xue-bin. MEASURING MERCURY SPECIATION IN CaCl2 SOLUTIONS USING DONNAN MEMBRANE TECHNIQUE[J]. Environmental Chemistry, 2010, 29(3): 502-507.

Citation:

ZHANG Hong-zhen, LUO Yong-ming, WENG L P SONG Jing, WU Long-hua, YIN Xue-bin. MEASURING MERCURY SPECIATION IN CaCl2 SOLUTIONS USING DONNAN MEMBRANE TECHNIQUE[J]. Environmental Chemistry, 2010, 29(3): 502-507.

道南膜技术测定CaCl2溶液体系中汞的化学形态

1.
中国科学院土壤环境与污染修复重点实验室, 中国科学院南京土壤研究所, 南京, 210008;
2.
Department of Soil Quality, Wageningen University, Wageningen, The Netherlands, PO Box 8005, 6700 EC;
3.
中国科学技术大学苏州研究院,中国科大-香港城大环境科学技术联合实验室, 苏州, 215123
4.
中国科学院研究生院, 北京, 100049
基金项目:
国家自然科学基金重点项目(40432005)

中国科学院知识创新工程重要方向项目(CXTD-Z2005-4)

MEASURING MERCURY SPECIATION IN CaCl2 SOLUTIONS USING DONNAN MEMBRANE TECHNIQUE

1.
Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China;
2.
Department of Soil Quality, Wageningen University, Wageningen, The Netherlands, PO Box 8005, 6700 EC, Holland;
3.
Advanced Laboratory for Environmental Research and Technology(ALERT), Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou, 215123, China;
4.
Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
Fund Project:

摘要: 尝试并探索道南膜技术(DMT)测定溶液体系中Hg化学形态的方法条件.结果表明,0.01mol·l-1CaCl2 作为背景溶液时,跨过阳离子交换膜的Hg主要形态并非阳离子而是HgCl2和HgCl3-.Hg在阳离子交换膜内扩散为限制Hg跨膜传输的主要因素.Hg在阳离子交换膜内的吸附除静电吸附外还存在结合力更强的化学吸附,成为限制道南膜技术用于Hg形态测定的主要因素.采用动力学DMT方法,缩短试验时间至8h以内,可在一定程度上降低Hg的化学吸附,为DMT方法测定土壤溶液体系中Hg的化学形态提供可能.
- 道南膜技术 /
- 汞 /
- 化学形态
Abstract: The optimal method conditions and theoretical basis of Hg species measurement using Donnan Membrane Technique(DMT)were explored.It was found that when 0.01 mol·l-1 CaCl2 was used as background solution,HgCl2、HgCl3- were the main contributors to the flux of Hg transport through the cation exchange membrane.The rate-limiting step of Hg transport from the donor side to acceptor side is Hg diffusion in the membrane.Besides electrostatic adsorption of Hg,there is strong chemical adsorption of Hg in the membrane,which plays as an important role in restricting the applicability of DMT on Hg species measurement.The chemical adsorption of Hg can be reduced by shortening the sampling time to 8 hours and Hg species in the donor side can be calculated using the dynamic DMT method,which shows the possibility to measure Hg speciation in soil solution by DMT.
- Donnan Membrane Technique /
- mercury /
- chemical speciation

[1]

Cattani I, Spalla S, Beone G M et al., Characterization of Mercury Species in Soils by HPLC-ICP-MS and Measurement of Fraction Removed by Diffusive Gradient in Thin Films. Talanta, 2008, 74:1520—1526
[2] Docekalova H, Divis P, Application of Diffusive Gradient in Thin Films Technique (DGT) to Measurement of Mercury in Aquatic Systems. Talanta, 2005, 65:1174—1178
[3] Ravichandran M, Interactions between Mercury and Dissolved Organic Matter:A Review. Chemosphere, 2004, 55:319—331
[4] Temminghoff E J M, Plette1 A C C, Van Eck R et al., Determination of the Chemical Speciation of Trace Metals in Aqueous Systems by the Wageningen Donnan Membrane Technique. Analytica.Chimica.Acta, 2000, 417:149—157
[5] Fitch A, Helmke P A, Donnan Equilibrium/Graphite Furnace Atomic Absorption Estimates of Soil Extract Complexation Capacities. Anal.Chem., 1989, 61:1295—1298
[6] Weng L P, Temminghoff E J M, Van Riemsdijk W H, Contribution of Individual Sorbents to the Control of Heavy Metal Activity in Sandy Soil. Environ. Sci.Technol., 2001, 35:4436—4443
[7] Weng L P, Temminghoff E J M, Lofts S et al., Complexation with Dissolved Organic Matter and Solubility Control of Heavy Metals in a Sandy Soil. Environ.Sci.Technol.,2002, 36: 4804—4810
[8] Weng L P, Temminghoff E J M, Van Riemsdijk W H, Aluminum Speciation in Natural Waters-Measurement Using Donnan Membrane Technique and Modeling Using NICA-Donnan. Water.Res., 2002, 36:4215—4226
[9] Nolan A L, Mclaughlin M J, Mason S D, Chemical Speciation of Zn, Cd, Cu, and Pb in Pore Waters of Agricultural and Contaminated Soils Using Donnan Dialysis. Environ. Sci.Technol.,2003, 37:90—98
[10] Cances B, Castec-Rouelle M, Aubry E et al., Metal Ions Speciation in a Soil and Its Solution-Experimental Data and Model Results. Geoderma, 2003, 113:341—355
[11] Weng L P, Van Riemsdijk W H, Temminghoff E J M, Kinetic Aspects of Donnan Membrane Technique for Measuring Free Trace Cation Concentration. Anal.Chem.,2005, 77:2852—2861
[12] Marang L, Reiller P, Pepe M et al., Donnan Membrane Approach: From Equilibrium to Dynamic Speciation. Environ.Sci.Technol.,2006, 40:5496—5501
[13] Kalis E J J, Weng L P, Dousma F et al., Measuring Free Metal Ion Concentrations in Situ in Natural Waters Using the Donnan Membrane Technique. Environ.Sci.Technol., 2006, 40:955—961
[14] Docekalova H, Divis P, Application of Diffusive Gradient in Thin Films Technique (DGT) to Measurement of Mercury in Aquatic Systems. Talanta, 2005,65:1174—1178
[15] Cattani I, Spalla S, Beone G M et al., Characterization of Mercury Species in Soils by HPLC ICP-MS and Measurement of Fraction Removed by Diffusive Gradient in Thin Films. Talanta, 2008,74:1520—1526
[16] Koopmans G F, Schenkeveld W D C, Song J et al., Influence of EDDS on Metal Speciation in Soil Extracts: Measurement and Mechanistic Multicomponent Modeling.Environ.Sci. Technol., 2008, 42:1123—1130
[17] Jiang G B, Shi J B, Feng X B, Mercury Pollution in China. Environ.Sci.Technol., 2006, 15:3673—3678
[18] Jing Y D, He Z L, Yang X E, Adsorption Desorption Characteristics of Mercury in Paddy Soils of China.J. Environ. Qual., 2008, 37:680—688
[19] Ge Y, Hendershot W, Modeling Sorption of Cd, Hg and Pb in Soils by the NICA-Donnan Model. Soil. Sediment. Contam., 2005, 14:53—69
[20] Haitzer M, Aiken G, Ryan J N, Binding of Mercury(Ⅱ) to Aquatic Humic Substances: Influence of pH and Source of Humic Substances. Environ. Sci. Technol., 2003, 37:2436—2441
[21] Haitzer M, Aiken G, Ryan J, Binding of Mercury(Ⅱ) to Dissolved Organic Matter: The Role of the Mercury-to-DOM Concentration Ratio. Environ. Sci. Technol, 2002, 36:3564—3570
[22] Miller C L, Mason R P, Gilmour C C et al. Influence of Dissolved Organic Matter on the Complexation of Mercury under Sulfidic Conditions. Environ. Toxico. Chem., 2007, 26:624—633
[23] Ullrich S M, Tanton T W, Abdrashitova S A, Mercury in the Aquatic Environment: A Review of Factors Affecting Methylation. Crit. Rev. Env. Sci. Tec., 2001, 31:241—293
[24] Lide D R ed., (Ionic Conductivity and Diffusion at Infinite Dilution.) Handbook of Chemistry and Physics. CRC, 2006—2007, 87th edition
[25] Kalis E J J, Weng, L P, Temminghoff E J M et al., Measuring Free Metal Ion Concentrations in Multicomponent Solutions Using the Donnan Membrane Technique. Anal.Chem.,2007, 79:1555—1563
[26] Tipping E, Modelling the Interactions of Hg(Ⅱ) and Methylmercury with Humic Substances Using WHAM/Model Ⅵ. Appl.Geochem., 2007, 22:1624—1635

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张红振, 骆永明, 宋静, 吴龙华, 尹雪斌. 道南膜技术测定CaCl2溶液体系中汞的化学形态[J]. 环境化学, 2010, 29(3): 502-507.

引用本文:

张红振, 骆永明, 宋静, 吴龙华, 尹雪斌. 道南膜技术测定CaCl2溶液体系中汞的化学形态[J]. 环境化学, 2010, 29(3): 502-507.

Citation:

道南膜技术测定CaCl2溶液体系中汞的化学形态

1. 中国科学院土壤环境与污染修复重点实验室, 中国科学院南京土壤研究所, 南京, 210008;
2. Department of Soil Quality, Wageningen University, Wageningen, The Netherlands, PO Box 8005, 6700 EC;
3. 中国科学技术大学苏州研究院,中国科大-香港城大环境科学技术联合实验室, 苏州, 215123
4. 中国科学院研究生院, 北京, 100049

收稿日期: 2009-04-22

基金项目:

国家自然科学基金重点项目(40432005)

中国科学院知识创新工程重要方向项目(CXTD-Z2005-4)

关键词:

道南膜技术 /
汞 /
化学形态

摘要: 尝试并探索道南膜技术(DMT)测定溶液体系中Hg化学形态的方法条件.结果表明,0.01mol·l-1CaCl2 作为背景溶液时,跨过阳离子交换膜的Hg主要形态并非阳离子而是HgCl2和HgCl3-.Hg在阳离子交换膜内扩散为限制Hg跨膜传输的主要因素.Hg在阳离子交换膜内的吸附除静电吸附外还存在结合力更强的化学吸附,成为限制道南膜技术用于Hg形态测定的主要因素.采用动力学DMT方法,缩短试验时间至8h以内,可在一定程度上降低Hg的化学吸附,为DMT方法测定土壤溶液体系中Hg的化学形态提供可能.

English Abstract

MEASURING MERCURY SPECIATION IN CaCl2 SOLUTIONS USING DONNAN MEMBRANE TECHNIQUE

1. Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China;
2. Department of Soil Quality, Wageningen University, Wageningen, The Netherlands, PO Box 8005, 6700 EC, Holland;
3. Advanced Laboratory for Environmental Research and Technology(ALERT), Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou, 215123, China;
4. Graduate University of Chinese Academy of Sciences, Beijing, 100049, China

Received Date: 2009-04-22

Fund Project:

Keywords:

Abstract: The optimal method conditions and theoretical basis of Hg species measurement using Donnan Membrane Technique(DMT)were explored.It was found that when 0.01 mol·l-1 CaCl2 was used as background solution,HgCl2、HgCl3- were the main contributors to the flux of Hg transport through the cation exchange membrane.The rate-limiting step of Hg transport from the donor side to acceptor side is Hg diffusion in the membrane.Besides electrostatic adsorption of Hg,there is strong chemical adsorption of Hg in the membrane,which plays as an important role in restricting the applicability of DMT on Hg species measurement.The chemical adsorption of Hg can be reduced by shortening the sampling time to 8 hours and Hg species in the donor side can be calculated using the dynamic DMT method,which shows the possibility to measure Hg speciation in soil solution by DMT.

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道南膜技术测定CaCl2溶液体系中汞的化学形态

MEASURING MERCURY SPECIATION IN CaCl2 SOLUTIONS USING DONNAN MEMBRANE TECHNIQUE

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道南膜技术测定CaCl2溶液体系中汞的化学形态

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MEASURING MERCURY SPECIATION IN CaCl2 SOLUTIONS USING DONNAN MEMBRANE TECHNIQUE

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