中国南海北部海洋中銅和镉表观络合容量及条件稳定常数的研究

The Study of the Apparent Complexing Capacity and Conditional Stability Constants of Cu and Cd in Sea-water

本文采用物理涂汞电极阳极溶出伏安法测定了中国南海北部几个站位重金属的表现络合容量。Cu为1—9×10~(-7)M,Cd为3—10×10~(-8)M。条件稳定常数logKcuL值在7.0—8.5之间,logKcdL值7—8.2之间。微量重金属表观络合容量顺序为Cu>Cd,表层大于底层。分析了产生上述结果的原因。

The apparent complexing capacity of the heavy metals are found in several sites of north parts of South Sea of China is determined by physical mercury film electrde of anodic stripping voltammetry mathod Cu between 1-9x10~(-7)M,Cd between 3-10x10~(10)M.Conditional stability Constants log Kcuce between 7.0-8.5, log Kcdce between 7.0-8.2. The order of apparent complexing capacity of minute heavy metals is Cu Cd, surface base layer. The possible reasons are anylized.