摘要
本文讨论了铁、钙和钡的砷酸盐在水环境中的溶解度与稳定性 ,着重分析了砷酸盐在水中发生不一致性溶解与稳定性的关系 .同时藉助PHREEQC程序 ,探讨了砷酸铁溶解时 ,其溶解度、砷的存在形式与pH值的关系 ,以及共存的氢氧化铁对稳定性的影响 ,并作出了Ca As 水和Ba As 水体系的lg[As]
The solubility and stability of Fe,Ca and Ba arsenates were discussed.Especially the relationship between arsenate stability and incongruent dissolution in water was analyzed.With help of the PHREEQC program,the solubility and the existing species of As during scorodite dissolution were researched.The result shows that the co-existing ferric hydroxides could also affected the dissolution and stability of scorodite.The lg[as]-ph stability diagrams for the ca-as-water systerm and dthe ba-as-water systerm were drawn in the paper .
出处
《环境化学》
CAS
CSCD
北大核心
2003年第5期478-484,共7页
Environmental Chemistry
基金
国家自然科学基金 (4 0 2 63 0 0 1 )
德国科学基金 (DFG)资助项目
