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A simple method for quantifying the humic content of commercial products

Quentel, François ; Filella, Montserrat

In: Analytical and Bioanalytical Chemistry, 2011, vol. 401, no. 10, p. 3235-3238

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    Titre
    • A simple method for quantifying the humic content of commercial products
    Auteur
    • Quentel, François. Laboratoire de Chimie Analytique, UMR-CNRS 6521, Université de Bretagne Occidentale, 6 avenue V. Le Gorgeu, CS 93837, 29238, Brest Cedex 3, France
    • Filella, Montserrat. Institute F.-A. Forel, University of Geneva, 10 route de Suisse, 1290, Versoix, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Analytical and Bioanalytical Chemistry, 2011, vol. 401, no. 10, p. 3235-3238. Springer-Verlag
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:317094
    Summary
    A method based on an analytical technique, initially developed for quantifying aquatic refractory organic matter (often called humics), has been applied to commercial samples claiming to contain humic-type substances. At present, no method exists for quantifying the humic content on this type of sample. The analytical method is based on measuring the peak current obtained by adsorptive stripping voltammetry of the complex formed by refractory organic matter in the presence of trace amounts of Mo(VI). The quantification procedure requires the response obtained for the unknown sample to be compared with the response obtained with International Humic Substance Society (IHSS) reference humic substances. A very simple procedure that enables the humic content of any sample to be expressed as IHSS standard equivalents is described in detail. The method is highly selective, reproducible and suitable for routine analysis