Effect of organic acids on the availability of cadmium in wheat

Authors: Nigam, RashMi; Srivastava, Shalini; Prakash, Satya; Srivastava, M. M.

Source: Chemical Speciation and Bioavailability, Volume 12, Number 4, November 2000 , pp. 125-132(8)

Publisher: Science Reviews 2000 Ltd

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Abstract:

Pot experiments were conducted to investigate the effect of various organic (carboxylic and amino) acids on the uptake and translocation of root-absorbed cadmium by wheat (Triticum vulgare) plants grown in sand and soil culture. Statistically significant increases in cadmium accumulation from cadmium treated plants in the presence of increasing concentration of organic acids suggest the existence of Cd-organic acid interactions in the soilplant system resulting into the formation of organically bound cadmium which is mobile and plant available. Separate experiments were performed to synthesise and estimate the various forms of organically bound cadmium. The chemical nature of the organically bound form was ascertained by electrophoretic experiments. Amino acids were less effective in the mobilisation of cadmium compared to carboxylic acids. The results are discussed on the basis of the potential of organic acids to form complexes with cadmium.

Keywords: cadmium uptake; wheat plant; organic acids; complexation

Document Type: Research article

DOI: http://dx.doi.org/10.3184/095422900782775481

Affiliations: 1: Department of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra - 282005, India

Publication date: 2000-11-10

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Chemical Speciation & Bioavailability covers a rapidly expanding area in environmental science.
Research on the interactions between the chemical forms and behaviour of toxic compounds and their subsequent biological uptake, metabolism and ecological fate involves many scientific fields. These studies are often published in discipline-specific journals, leading to inadequate review and information scatter. This situation hinders both the development of an international community of experienced colleagues and the open flow of information and discussion. Additionally, the importance of speciation and bioavailability research to the development of pollution law and control technologies is being increasingly appreciated by environmental regulatory agencies throughout the world.
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Effect of organic acids on the availability of cadmium in wheat

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