Determination of complexation capacity of trace metal-organic in natural water

The complexation capacity for heavy metals (Cu, Cd, Pb) were determined by anodic stripping voltammetry in South China Sea, Hulun Lake and Wuliang Suhai. The conditional stability constants and complexation capacity index were calculated. The data showed that the complexation capacity of the Hulun Lake was greater than that of seawater and Wuliang Suhai. The sequence of complexation capacity is C (CuL)> C (CdL)> C (PbL), the values are in concord with results of analysis on dissolved organic carbon. The conditional stability constants were in an opposite sequence: K (CuL)< K (CdL)< K (PbL). When log K are similar, the greater the complexation capacity, the greater the complexation capacity index.

内蒙古若干江湖水体中铜的表观络合容量

本文对内蒙古若干江湖水样中天然配体与铜的表观络合容量(C.C.)进行了阳极溶出伏安法测定.并计算总条件稳定常数(K)和络合容量指数(Ⅰ).实验表明:富集电位、pH值、碳酸根对络合容量的测定影响不同;天然pH值下,铜的表观络合容量为呼伦湖最人.乌梁素海最小,其余水样相近.

黄河中游内蒙三个地段水体中天然配体与重金属络合容量研究

于1990年10月-1992年7月在室内条件下测定黄河中游乌拉特前旗、包头黄河大桥及清水河地段水体中天然配体与铜、铅、锌、镉反应的络会容量（c·C），计算总条件稳定常数（K）和络合容量指数（I）。实验证明：乌拉特前旗水体中络合客量最大，包头和清水河相近。络合容量顺序为：Cu＞Zn＞Cd＞Pb，和可溶性有机碳及碳酸盐分析结果一致。总条件稳定常数为：KPbL最大，KCuL，KZnL，KCdL相近。和长江水做了比较。络合容量指数在IgK相近情况下，随络合容量增大而增大。

水环境重金属络合容量研究进展

水环境中广泛存在的配位体是控制重金属存在形态的关键因素之一。文章综述了水环境重金属络合容量的测定方法及其影响因素和最新的研究进展,分析了目前存在的问题,并对络合容量的研究进行了展望。