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In this study, we analyse the impact of the indiscriminate spilling of spent oil by garages on the surrounding soils. Physico-chemical, biological and heavy metal (HM) profiles of the spent oil-contaminated soils were compared with control samples in Guwahati city, Assam, India. The results revealed that the spent oil-contaminated soils show an increase in the abundance of HMs (varying from 58 to 18,400 mg/kg), total oil and grease (77,000–161,000 mg/kg) and a decrease in bacterial load (68.2–76.2%) and enzymatic activities (18.02–98.4%) when com­pared with control samples. Site-specific remediation strategies are needed to mitigate this problem

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Dr. M. A. Akbarsha,
Society for Reproductive Biology and Comparative Endocrinology.
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