Journal
ENVIRONMENTAL MONITORING AND ASSESSMENT
Volume 166, Issue 1-4, Pages 347-357Publisher
SPRINGER
DOI: 10.1007/s10661-009-1006-6
Keywords
Trace elements; Plant uptake; Bioconcentration factor; Wastewater irrigation
Categories
Funding
- Prime Minister's Research Fund, Government of Peoples Republic of Bangladesh
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Concentrations of Cu, Zn, Pb, Cr, Cd, Fe, and Ni have been estimated in soils and vegetables grown in and around an industrial area of Bangladesh. The order of metal contents was found to be Fe > Cu > Zn > Cr > Pb > Ni > Cd in contaminated irrigation water, and a similar pattern Fe > Zn > Ni > Cr > Pb > Cu > Cd was also observed in arable soils. Metal levels observed in different sources were compared with WHO, SEPA, and established permissible levels reported by different authors. Mean concentration of Cu, Fe, and Cd in irrigation water and Cd content in soil were much above the recommended level. Accumulation of the heavy metals in vegetables studied was lower than the recommended maximum tolerable levels proposed by the Joint FAO/WHO Expert Committee on Food Additives (1999), with the exception of Cd which exhibited elevated content. Uptake and translocation pattern of metal from soil to edible parts of vegetables were quite distinguished for almost all the elements examined.
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