Abstract
Cr (VI) sorbed more Cr in Cr (VI) in Ca (NO3)2 (0.01 M) electrolytes than in 0.001 M Ca(NO3)2 solution. Nonspecific anions influenced Cr (VI) sorbed by the Taoyuan acid soils in the order: Cl- < ClO4 - < SO4 2-. On the other hand, in the alkaline soils, these three electrolyte solutions showed slight differences in Cr(VI) sorption. In the experiment replacing phosphate by Chromate in the Taoyuan acid soils, the amount of Chromate desorbed by phosphate increased with increasing Cr (VI) concentrations and decrease with increase in equilibration time. However, Cr (VI) desorption was not affected by equilibration time in the alkaline Si-Lo soils.
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