【摘要】 采用新极谱技术（1.5次微分）的阳极溶出伏安滴定方法测定天然海水的铜络合容量和条件稳定常数。对测试条件、EDTA回收率和有关问题进行了探讨。青岛近岸水样的九次平行测定表明,铜的表现络合容量为3.01×10^-7mol/dm³,条件稳定常数为7.34×10⁷,相对标准偏差分别为9.2％和13.8％。更多还原

【Abstract】 The method of determination of copper complexing capacity in sea water has been studied by means of new polarography (1.5 differential ASV). In a 0.5 mol./dm3 NaCl medium, the recovery of EDTA 94.3% was obtained. Analysis of nine replicates of a Qingdao ncarshorc sea water sample gave an apparent copper complexing capacity of 3.01× 10-7 mol. /dm3, and a corresponding conditional stability constant of 7.34×107, with relative standard deviations of 9.2% and 13.8% , respectively.更多还原