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Quantification of Toxicity of lead from Sewage-Sludge samples used for Vegetation in Dombivli MIDC, Maharashtra, India

Author Affiliations

  • 1 Department of Chemistry, Smt.C.H.M. College, Ulhasnagar, Maharashtra, INDIA

Int. Res. J. Environment Sci., Volume 4, Issue (2), Pages 50-53, February,22 (2015)


Application of sewage sludge is common as a soil amendment on productive vegetation land. Sludge builds up the soil organic matter content effectively like compost; it thus improves soil structure and capacity of water retention. At the same time significant amount of nutrients are supplied to the soil. Depending upon the sources, sewage sludge composition is highly variable. Unfortunately, sludge originating from urban wastewater source contain relatively higher concentrations of non-nutrient metals Some of the elements are potentially toxic to plants growing on soil that is treated with sludge., Households are the major sources as well; lead, copper, zinc, iron are all leached from domestic pipes. The vegetation land is mainly utilized for cultivating variety of routine vegetables that are consumed by local residents. The concentration level of heavy metal lead present in selected sections of sludge was ascertained using liquid-liquid extraction coupled with photometric technique. Hexane-2,5-dione-bis(ethylene diamine) HDBE, novel derivative that forms deep yellow complex with lead which is quantitatively extracted into chloroform at PH4.4 respectively. Concentration of reagent required for complex formation and full color development is very low (0.8cm3 of 0.1% HDBE). Beer’s law is obeyed in the detectable range 0.4-5.0ppm for Pb(II)


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