Journal of Radioanalytical and Nuclear Chemistry

, Volume 208, Issue 2, pp 617–630 | Cite as

Capillary zone electrophoresis to study the humic fraction in organic soils and its relationship with radiocaesium mobility

  • A. Rigol
  • M. Vidal
  • G. Rauret
Article

Abstract

Humic acids and associated radionuclides were extracted from several soil samples with a significant organic matter content, such as peaty soils and forest soil layers. Extractions were made using two alkaline solutions (Na4P2O7 0.1 mol·1−1 and NaOH 0.1 mol·1−1 under N2). The humic acid content in the extract was determined by the capillary zone electrophoresis technique (CZE) and associated radiocaseium was determined by gamma spectrometry. After analizing a large number of samples and studying the relationship between humic acid and organic matter content it was possible to conclude that the CZE technique may be a good alternative to classical techniques in humic acid determinations, with NaOH extractions leading to higher results than Na4P2O7. Furthermore, the quantification of the radiocaseium desorbed by applying different extractant reagents (NaOH, Na4P2O7, NH4AcO and CaCl2) showed that there may be some organic matter-radionuclide interations, other than those originated by humic acids. which may govern radionuclide retention in soils with a high content of organic matter.

Keywords

Radionuclide Humic Acid Forest Soil Organic Matter Content Organic Soil 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    A. CREMERS, A. ELSEN, P. DE PRETER, A. MAES, Nature, 335 (1988) 247.Google Scholar
  2. 2.
    M.V. CHESHIRE, C. SHAND, Plant and Soil, 134 (1991) 287.Google Scholar
  3. 3.
    A.F. NISBET, S. SHAW, J. Environ. Radiac., 23 (1994) 1.Google Scholar
  4. 4.
    C. MYTTENAERE, W.R. SCHELL, Y. THIRY L. SOMBRE, C. RONNEAU, J. VAN DER STEGEN DE SCHRIECK, Sci. Total Environ., 136 (1993) 77.Google Scholar
  5. 5.
    A. RIGOL, M. VIDAL, G. RAURET, 6th Conference of Ionic Solutes, Piestany Spa, Slovakia (1995).Google Scholar
  6. 6.
    M. SUSIC, K.G. BOTO, J. Chromatogr., 482 (1989) 175.PubMedGoogle Scholar
  7. 7.
    A. RIGOL, J.F. LÓPEZ-SÁNCHEZ, G. RAURET, J. Chromatogr., 664 (1994) 301.Google Scholar
  8. 8.
    T. SAURAS, M.C. ROCA, J. TENT, M. LLAURADÓ, M. VIDAL, G. RAURET, R. VALLEJO, Sci. Total Environ., 157 (1994) 231.Google Scholar
  9. 9.
    E.S. OLSON, J.W. DIEHL, J. Chromatogr., 349 (1985) 337.Google Scholar
  10. 10.
    A. RIGOL, J.F. LÓPEZ-SÁNCHEZ, G. RAURET, Quim. Anal., 13 (1994) 11.Google Scholar
  11. 11.
    P.J. ROUSSEEUW, A.M. LEROY, Robust Regression and Outlier Detection, John Wiley, New York (1981).Google Scholar
  12. 12.
    F.J. STEVENSON, Humus Chemistry, John Wiley & Sons, New York (1982).Google Scholar
  13. 13.
    J. WAUTERS, L. SWEECK, E. VALCKE, A. ELSEN, A. CREMERS, Sci. Total Environ., 157 (1994) 239.Google Scholar

Copyright information

© Akadémiai Kiadó 1996

Authors and Affiliations

  • A. Rigol
    • 1
  • M. Vidal
    • 1
  • G. Rauret
    • 1
  1. 1.Departament de Química AnalíticaUniversitat de BarcelonaBarcelonaSpain

Personalised recommendations