Geochemistry of sediments and water with a health risk assessment of heavy metal contaminated vegetables grown in Dhapa, a waste disposal site in Kolkata, India

Lead isotopic ratios (LIR) of eight common food items, street dust, coal, diesel, sediments, lead ore and rainwater from India have been reported for the first time in this paper. This study characterized the source and extent of lead pollution in the different foodstuff consumed in Kolkata, a major metropolis of eastern India. The atmospheric lead input to the food items, sold openly in busy roadside markets of the city, has been quantified. The mean 207/206 and 208/206 LIRs of the eight food items ranged from 0.8847 to 0.8924 and 2.145 to 2.167, respectively. Diesel had the highest mean 207/206 and 208/206 values of 0.9015 and 2.1869, respectively, apart from the lead ore. The food items had a mean lead concentration between 3.78 and 43.35 mg kg. The two ratio scatter plots of all the different environmental matrices were spread linearly between the uncontaminated Ichapur sediment and diesel. The 207/206 LIRs of the coal with a mean of 0.8777 did not fall in the linear trend, while the street dust and food samples overlapped strongly. The rainwater sample had a 207/206 LIR of 0.9007. Contaminated sediments in Dhapa, the repository of the city's municipal garbage, had a mean 207/206 LIR of 0.8658. The corresponding value obtained from the sewage-fed vegetable grown there was 0.8058. The present study indicated that diesel was one of the main contributor to Pb pollution. The atmospheric lead contribution to the food items was in the range of 68.48-86.66 %.

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Tracing lead contamination in foods in the city of Kolkata, India

Das

Krishna

Kumar

et al. 2016

Environ Sci Pollut Res

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Heavy metals in common food items in Kolkata, India

Das

2017

Euro-Mediterr J Environ Integr

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Appraisal of environmental, ecological and carcinogenic risk due to heavy metals in a sewage and solid waste contaminated area

Das

Sengupta

Patra

et al. 2022

Soil and Sediment Contamination: An International Journal

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Geochemistry of sediments and water with a health risk assessment of heavy metal contaminated vegetables grown in Dhapa, a waste disposal site in Kolkata, India

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Tracing lead contamination in foods in the city of Kolkata, India

Tracing lead contamination in foods in the city of Kolkata, India

Heavy metals in common food items in Kolkata, India

Appraisal of environmental, ecological and carcinogenic risk due to heavy metals in a sewage and solid waste contaminated area

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