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铜精矿中铅、镉、锌的化学分析通常采用极谱法和原子吸收光谱法。均未实现连续测定。寻求连续测定复杂矿样中铅、镉、锌的方法是必要而可能的。众所周知,极谱法的困难主要在于大量铜铁对测定的干扰以及铟干扰微量镉。I.M.Kolthoff提出了盐酸羟胺—硫氰酸钾除铜体系,首先实现了大量铜铁中快速定铅,但对微量铅仍产
Chemical analysis of lead, cadmium and zinc in copper concentrates is usually carried out by polarography and atomic absorption spectrometry. No continuous measurement was achieved. It is necessary and possible to find a continuous method for the determination of lead, cadmium and zinc in complex ore samples. It is well-known that polarographic difficulties are mainly caused by the interference of a large amount of copper and iron on the determination and indium interference with trace cadmium. I.M. Kolthoff put forward hydroxylamine hydrochloride - potassium thiocyanate in addition to copper system, first of all to achieve a large number of copper and iron in the fast lead, but the trace lead is still