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Studies on mobilization of chromium with reference to its plant availability – Role of organic acids

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Abstract

Metal-organic acid interactions with special reference to their plant availability have been studied. The role of organic acids in the mobilization of Cr by converting it into labile organically bound form, enhancing its availability, is highlighted. Pot experiments are conducted to investigate the effect of various organic acids on the uptake and translocation of root absorbed trivalent and hexavalent chromium by maize (z. mays) plants grown in sand and soil culture. Statistically significant increases in chromium accumulation from CrIII-treated plants in the presence of increasing concentrations of organic acid suggest the existence of CrIII – organic acid interactions in the soil plant system. In order to support the above mentioned hypothesis of formation of organically bound CrIII in the presence of various organic acids (carboxylic and amino acids), separate experiments have been performed to synthesize and estimate its respective organically bound forms. Amendments with organic acids, however, do not appear to markedly affect chromium accumulation from CrVI treatment. The results are discussed on the basis of the potential of organic acids to form complexes with CrIII.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra-282 005, India

    Sonal Srivastava, Satya Prakash & M.M. Srivastava

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  1. Sonal Srivastava
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  2. Satya Prakash
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  3. M.M. Srivastava
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Srivastava, S., Prakash, S. & Srivastava, M. Studies on mobilization of chromium with reference to its plant availability – Role of organic acids. Biometals 12, 201–207 (1999). https://doi.org/10.1023/A:1009262609373

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