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ISSN 2063-5346
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IMPACT OF COVID-19 ON CONTAMINATION OF SOIL BY HEAVY METALS –A BLESSING TOWARDS SUSTAINABILITY

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Pushpa Yadav, Souvanik Talukdar, Soma Sharma
» doi: 10.53555/ecb/2022.11.10.52

Abstract

Heavy metals present in soil cause a serious global environmental problem and pose a threat to plants, animals, and even to human health. In this study, the impact of heavy metals on soil health during Covid-19 phase has been studied to check out the effect of the shutdown of industries during lockdown on our natural habitat. Soil samples were analyzed for heavy metals using Atomic absorption spectrophotometer (AAS). The soil near industrial waste was contaminated with heavy metals following the order; Fe> Zn > Cr > Ni > Cu> Cd and that away from sludge was found to show the order Fe> Zn > Cr > Cu > Ni> Cd. Soil near sludge is rich in Fe at depth than in upper layer of soil. Soil away from sludge had been reported to have higher concentrations of Zn and Cu than the soil nearby sludge at each corresponding depth. That may be due to less use Zn and Cu compounds in industries, so disposed sludge contains low concentrations of Zn and Cu. Traces of Cd in all the samples were found below the permissible limit of WHO. Soil nearby sludge was found rich in Cr and Ni than the soil away from sludge, which may be due higher percentage of Cr and Ni in the disposed sludge and in upper layers. These results indicate the presence of heavy metals is within permissible limits as per WHO guidelines. Most of the earlier studies has reported that the soil near industries is fully contaminated with heavy metals and affected the health of soil and environment. But the data in the present study suggest that due to shutdown of industries during covid-19 has been proven to be a blessing for our natural habitat and health of soil has been improved.

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