Some Heavy Metals Speciation and Bioavailability in Agricultural Soils Used for Cultivating Various Vegetables

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Some Heavy Metals Speciation and Bioavailability in Agricultural Soils Used for Cultivating Various Vegetables

June 19, 2021 Agricultural Sciences 0

Vegetables grown in polluted soils with unregulated agrochemical applications may contain heavy metals. Because farmers used too many agrochemicals, this could happen in vegetables grown in Bedugul’s agricultural soils. To consider metals transfer to vegetables, a speciation and bioavailability approach had to be studied. The purpose of this research was to determine the speciation and bioavailability of certain heavy metals in agricultural soils in Bedugul, Bali. used to cultivate a wide range of vegetables The sample was subjected to wet digestion and sequential extraction procedures prior to metal detection by AAS. According to the findings, the average amounts of Pb, Cu, Cd, Cr, and Zn in the soils were 38.531, 132.126, 7.689, 15.952, and 147.275 mg/kg, respectively. The highest concentrations of Pb and Zn were found in lettuce-growing soil, Cd and Cr in tomato-growing soil, and Cu in potato-growing soil. Pb, Cu, Cd, and Cr speciation were found to be primarily associated with the Fe-Mn oxides fraction, whereas Zn was found to be primarily associated with the EFLE (easily, freely, leachable, and exchangeable) fractions. Cr was the most bioavailable. Cu had the lowest concentration of the metals tested in the soils.

Author(s) Details

Dr. I. Made Siaka
Chemistry Department, Maths and Sciences Faculty, Bukit Campus, Jimbaran-Bali, Indonesia.

Emmy Sahara
Chemistry Department, Maths and Sciences Faculty, Bukit Campus, Jimbaran-Bali, Indonesia.

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