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Comparing Bioavailability of Cadmium and Arsenic in Agricultural Soil Under Varied pH Condition
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 Title & Authors
Comparing Bioavailability of Cadmium and Arsenic in Agricultural Soil Under Varied pH Condition
Oh, Se Jin; Kim, Sung Chul; Ok, Yong Sik; Oh, Seung Min; Lee, Bup Yeol; Lee, Sang Hwan; Yang, Jae E.;
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Bioavailability of cadmium (Cd) and arsenic (As) can be different depending on soil pH. For this reason, main purpose of this research was to compare bioavailability of Cd and As in agricultural field under varied soil pH and different extractants. Bioavailable fraction of Cd and As in soil was extracted with , , DTPA, EDTA, and low molecular weight organic acids (LMWOAs). Soil samples and cultivated crops were collected at the range of soil pH 4.5-8.5 and correlation analysis was conducted between bioavailable fraction of Cd and As in soil and total concentration of Cd and As in crops. Results showed that concentration of Cd and As in acidic soil was ranged and respectively. In alkaline condition, concentration of Cd and As were ranged and respectively. Comparing bioavailable fraction of Cd and As in acidic and alkaline soil condition, higher concentration was measured in acidic condition. Similarly, higher average concentration of Cd and Asin crops was observed in acidic condition (0.398 and respectively) than alkaline condition (0.248 and ). Among different extractants, LMWOAs method showed higher correlation ($r^2
Soil pH;Cadmium;Arsenic;Bioavailability;Extractants;
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