Accumulation of cadmium by plants of Zawar Mines, Rajasthan, India.
Several plants of the Zawar Zinc Deposits of Rajasthan (India) accumulate very high levels of cadmium. The maximum concentration namely 420 micrograms g-1 was found in the stems of Crotalaria linifolia. Some other cadmium accumulators with the concentration of the metal in microgram g-1 are Impatients balsamina (380), Dyerophytum indicum (282) and Melhania futteyporensis (245). The sequence of cadmium accumulation in different organs of the same plant species was roots greater than stems greater than leaves. Cadmium levels in the leaves of Celosia argentea, Crotalaria linifolia, Impatiens balsamina and Triumfetta pentandra showed a significant (linear) plant-soil relationship. The respective biological absorption coefficients (BAC - concentration of the element in the plant divided by concentration of the same element in the substrate) for these plants were 2.74, 4.13, 5.49 and 4.65.
Aery
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NC
Department of Botany, Sukhadia University, Udaipur, India.
Tiagi
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YD
D002104:Cadmium / Q000493:pharmacokinetics*; D007194:India; D008906:Mining; D010944:Plants / Q000378:metabolism*; D012987:Soil / Q000032:analysis; D014018:Tissue Distribution
D012987:Soil; D002104:Cadmium