黄河口及其附近海域表观Cu络合容量的研究

采用阳极溶出伏安法(ASV)对黄河口及其附近海域14个站位表、底层海水的表观Cu络合容量(ACuCC)进行了测定,并计算了条件稳定常数(K)和络合容量指数(CCI).得到该海域海水ACuCC的变化范围在215.1～738.0 nmol/L,平均值为387.3 nmol/L;lgK的变化范围在7.66～8.95,平均值为8.27;CCI的变化范围在82.50%～95.25%,平均值为88.05%.结果表明:调查海域表层海水ACuCC的平均值比底层海水ACuCC的平均值高,南部海区表层海水ACuCC值高,而远离海岸的东北部海区表层海水ACuCC值低.

Study on copper complex apparent capacity in the Yellow River Estuary and sea area

14 locations were set up in the Yellow River Estuary and sea area.The apparent copper complex capacity(ACuCC) in the surface and the bottom seawater was determined by the anodic stripping voltmeter(ASV) technique.The corresponding conditional stability constant(K) and complex capacity index(CCI) were calculated.The ACuCC values for the seawater were between 215.1 and 738.0 nmol/L,and the mean 387.3 nmol/L.The lgK values for the seawater were between 7.66 and 8.95,and the mean 8.27.The CCI values for the seawater were between 82.50% and 95.25%,and the mean 88.05%.The results showed that the ACuCC mean in the surface seawater was higher than in the bottom.The ACuCC in surface of the south was maximal,but the ACuCC in surface of the east-northeast where is away from the seacoast was lesser.