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The geoenvironmental cycle of cadmium: a case study

Author

Listed:
  • A.R. Khwaja

    (University of Roorkee)

  • Rashmi Singh

    (University of Roorkee)

  • Madhuri Raju

    (University of Roorkee)

  • S.N. Tandon

    (University of Roorkee)

Abstract

Amidst the hue and cry about anthropogenic sources of pollution, there are regions in the world facing silent metal discharges purely due to geochemical factors. The present investigation relates to such a situation and deals with the non-anthropogenic discharge of cadmium into the local environment. The phosphorite rocks of the Roorkee area of India contain cadmium and, particularly as these are used in the manufacture of superphosphate, the rocks could lead to the large-scale disbursement of cadmium into the open environment. The area under study has soil rich in cadmium-containing minerals, as a result of which water is likely to leach out mobile cadmium and the ground water and crops could become contaminated. This is evident from the high values of cadmium in the tap water and food samples in the area. The Ganga and the Yamuna, the two major rivers traversing the area that originate in the central crystalline rocks of the Himalayas, show high cadmium values at Rishikesh and Dakpathar. Moreover, the sediments of these rivers have cadmium in easily bioavailable form. Food samples and milk analysed from the area show, in some cases, cadmium levels above the safety limits. This high exposure to cadmium is probably causing ailments so far unreported.

Suggested Citation

  • A.R. Khwaja & Rashmi Singh & Madhuri Raju & S.N. Tandon, 1997. "The geoenvironmental cycle of cadmium: a case study," Environment Systems and Decisions, Springer, vol. 17(2), pages 103-108, June.
    • Handle: RePEc:spr:envsyd:v:17:y:1997:i:2:d:10.1023_a:1018595815672
    DOI: 10.1023/A:1018595815672
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    References listed on IDEAS

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    1. Unknown, 1977. "Table of Contents," 1977 Occasional Paper Series No. 1 190947, International Association of Agricultural Economists.
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