摘要
游离氰滴定法测氰化液中游离氰化钠时铜锌络离子的部分解离造成显著的正偏差，根据溶液理论对锌的干扰进行了分析和计算，并实际测定了氰化液中铜锌络离子的平均配位数变化情况，给出了铜辞干扰量的计算公式，探讨了铜锌干扰的实际校正方法．
When free sodium cyanide in cyanide solution is measured by titrametic method partial dissociation of copper and zinc complex ions causes evident Positive deviation. Zinc interference is analysed and calculated on the basis of solution theory and the variation of the average coordination numbers, copper and zinc complex ions in cyanide solution is actualy determined. The formulas to calculate copper and zinc interferenceare presented. The practical calibration method for copper and zinc interference is discussed.
基金
国家黄金局有偿资助
关键词
游离氰
滴定法
铜
锌
干扰
free cyanogen,titration,copper,zinc, interference
