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|Title: ||Heavy metal contamination of water bodies, soils and vegetables in peri urban areas of Bangalore city of India.|
|Authors: ||L R, Varalakshmi|
A N, Ganeshamurthy
|Keywords: ||Heavy metal|
|Issue Date: ||2010|
|Citation: ||L. R. Varalakshmi and A. N. Ganeshamurthy 2010. Heavy metal contamination of water bodies, soils and vegetables in peri urban areas of Bangalore city of India. In proceedings of 19th World Congress of Soil Science, Soil Solutions for a changing World , 1 – 6 August 2010, Brisbane, Australia.|
|Abstract: ||A study was conducted in peri-urban Bangalore where city wastewaters from four water bodies viz,Bellandur, Varthur, Byramangala and Nagavara tanks were used for cultivation of vegetable crops to assessheavy metal contamination of water, soil and vegetables. Analyses revealed high concentrations of Cd andCr in waters of all the tanks, exceeding the recommended levels of 0.01 and 0.1 mg/L respectively.Concentration of Cd was highest in waters of Bellandur (0.039mg/L) and concentration of Cr was highest inwaters of Byramangala tank (0.311mg/L). Among all the tanks, Bellandur and Varthur were found to behighly contaminated with Cd, Pb and Ni. The concentration of heavy metals (mg/kg) in soils receivingsewage waters from the four tanks ranged from 1.92 -2.90 for Cd, 47.04-68.12 for Pb, 35.08-92.78 for Crand 48.2-57.3 for Ni. The Cd and Pb contents were highest in the soils near Varthur and Bellandur tanks,while Cr was highest in soils near Byramangala. A similar trend was observed with respect to heavy metal
content of vegetables. Among all the vegetables, Amaranthus and palak, accumulated higher concentrationsof heavy metals followed by carrot and radish. The Cd concentration of all the vegetables grown nearVarthur and Bellandur tanks exceeded the PFA safe limit. Pb and Ni concentrations exceeded the safe limitsin all the vegetables in all the tank areas.|
|Appears in Collections:||Soil Science & Agricultural Chemistry|
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