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硅胶色层分析土壤中水溶性腐殖酸

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王旭辉, Shaw G, 朱永官. 硅胶色层分析土壤中水溶性腐殖酸[J]. 环境化学, 2003, 22(5): 511-515.
引用本文: 王旭辉, Shaw G, 朱永官. 硅胶色层分析土壤中水溶性腐殖酸[J]. 环境化学, 2003, 22(5): 511-515.
shu
WANG Xu-hui, Shaw G, ZHU Yong-guan. THE USE OF GEL FILTRATION CHROMATOGRAPHY IN ISOLATING HUMIC ACIDS FROM SOILS[J]. Environmental Chemistry, 2003, 22(5): 511-515.
Citation: WANG Xu-hui, Shaw G, ZHU Yong-guan. THE USE OF GEL FILTRATION CHROMATOGRAPHY IN ISOLATING HUMIC ACIDS FROM SOILS[J]. Environmental Chemistry, 2003, 22(5): 511-515.
shu

硅胶色层分析土壤中水溶性腐殖酸

  • 1.

    西北核技术研究所核物理与应用化学研究室, 西安, 710024;

  • 2.

    伦敦大学帝国理工学院环境科学与技术系;

  • 3.

    中国科学院生态环境研究中心, 北京, 100085

THE USE OF GEL FILTRATION CHROMATOGRAPHY IN ISOLATING HUMIC ACIDS FROM SOILS

  • 1.

    Northwest Institute of Nuclear Technology, Xi'an, 710024;

  • 2.

    Department of Environmental Science and Technology, Imperial College of Science Technology and Medicine, Silwood Park, Ascot, Berkshire, SL5 7TE UK;

  • 3.

    Research Center for Eco-Envimnmental Sciences, the Chinese Academy of Science, Beijing, 100085

  • 摘要: 采用水浸取法和硅胶色层法, 通过紫外吸收光谱峰定性鉴定了英格兰七种土壤水溶性腐殖酸.沉积土中水溶性腐殖酸均展示了二组峰值, 而在草原土中低分子量组份消失.选用γ谱仪测定了沉积土水溶性腐殖酸中的放射性核素137Cs, 采用中子活化测量技术分析了常量钠和氯.结果表明, 在高盐含量的沉积土中存在的大量竞争络合离子钠可能是使放射性核素137Cs与沉积土中水溶性腐殖酸没有直接关系的原因.
    Abstract: Water soluble soil humic acids were analyzed from seven different soils in England by gel filtration chromatography(GFC)followed by indentifing in 290nm using UV-Vis absorption spectrophotometer.For the estuary soil there exhibited two groups of peaks from soluble humic acid,howe- ver,the lower mass group were disappear for the grass land soil.The activity of 137Cs in sediment samples from estuaries was determined initially using high resolution γ-ray spectrometry in order to ensure that no isotopic interference would occur when using a low resolution NaI(Tl)detector for the analyses of GFC fractions.Sodium and chlorine were determined by neutron activation.The results show that radiocaesium is unlikely exist in an organically complexed state within the estuarine environment,because it seems likely that the more abundant sodium ion has displaced 137Cs from binding sites on the humic acid itself.
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  • [1] Batley G E,Trace Element Speciation;Analytical Methods and Problems[M].Boca Raton,USA;CRC Press,1989
    [2] Stevenson F J,Humus Chemistry[M].London;John Wiley & Sons Ltd.,1981
    [3] Wang X,Physico-Chemical Behaviour of Radionuclides in Forest Soils of the Evacuated Region of the Chernobly Nuclear Power Plant[D].London;London University,PhD,1996,139-148
    [5] Davies K S,Shaw G,Fixation of 137Cs by Soil and Sediments in the Estuary,Cumbria,UK[J],The Science of the Total Environment,1993,132∶71-92
    [6] Livens F R,Loveland P J,The Influence of Soil Properties on the Environmental Mobility of Caesium in Cumbria[J].Soil Use and Management,1988,4∶69-75
    [7] Hilton J,Livens F R et al.,Retention of Radioactive Caesium by Different Soils in the Catchment of a Small Lake[J].The Science of the Total Environment,1993,129∶253-266
    [8] Cremers A,Elsen A et al.,Quantitative Analysis of Radiocaesium Retention in Soils[J].Nature,1988,335∶247-249
    [9] Assinder D J,Kelly M,Aston S R,Tidal Variations in Dissolved and Particulate Phase Radionuclide Activities in the Esk Estuary and Their Distribution Coefficients and Particulate Activity Fractions[J].J.Environ.Radioactivity,1985,2∶1-22
    [10] Cheng H,Hagamuchi H,Studies on the Adsorption of Marine Sediments[J].Health Physics,1981,14∶353-362
    [4] Browne E,Firestone R B,Table of Radioactive Isotopes[M].London;Wiley-Interscience Publication,1986
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王旭辉, Shaw G, 朱永官. 硅胶色层分析土壤中水溶性腐殖酸[J]. 环境化学, 2003, 22(5): 511-515.
引用本文: 王旭辉, Shaw G, 朱永官. 硅胶色层分析土壤中水溶性腐殖酸[J]. 环境化学, 2003, 22(5): 511-515.
shu
WANG Xu-hui, Shaw G, ZHU Yong-guan. THE USE OF GEL FILTRATION CHROMATOGRAPHY IN ISOLATING HUMIC ACIDS FROM SOILS[J]. Environmental Chemistry, 2003, 22(5): 511-515.
Citation: WANG Xu-hui, Shaw G, ZHU Yong-guan. THE USE OF GEL FILTRATION CHROMATOGRAPHY IN ISOLATING HUMIC ACIDS FROM SOILS[J]. Environmental Chemistry, 2003, 22(5): 511-515.
shu

硅胶色层分析土壤中水溶性腐殖酸

  • 1.  西北核技术研究所核物理与应用化学研究室, 西安, 710024;
  • 2.  伦敦大学帝国理工学院环境科学与技术系;
  • 3.  中国科学院生态环境研究中心, 北京, 100085

摘要: 采用水浸取法和硅胶色层法, 通过紫外吸收光谱峰定性鉴定了英格兰七种土壤水溶性腐殖酸.沉积土中水溶性腐殖酸均展示了二组峰值, 而在草原土中低分子量组份消失.选用γ谱仪测定了沉积土水溶性腐殖酸中的放射性核素137Cs, 采用中子活化测量技术分析了常量钠和氯.结果表明, 在高盐含量的沉积土中存在的大量竞争络合离子钠可能是使放射性核素137Cs与沉积土中水溶性腐殖酸没有直接关系的原因.

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