| Summary: | 碩士 === 國立屏東科技大學 === 環境工程與科學系所 === 102 === Ultramafic rocks are derived from hot sea water under high pressure for serpentinization, and then transform as serpentinite, which are widely distributed in the intersection of tectonic plates. Heavy metals are enriched in these rocks including chromium and nickel. This study selected 50 soil samples from (A), (B), and (C) in eastern Taiwan to explore the soil basic properties related to bioavailability of Cr and Ni. Results show that the total chromium and nickel were higher than the soil pollution control levels (Cr: 250 mg/kg, Ni: 200 mg/kg) in some soil samples. By using 0.1N HCl and 0.005M DTPA extraction methods, the Ni extracted concentration was higher than Cr. Therefore, the mobility of Ni was higher than that of Cr. In addition, this study found no significant correlation of the metals between soil and crop.
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