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测定锌通常用EDTA容量法和氨性底液极谱怯(北京矿冶研究院,《矿石及有色金属分析》,1971年)。化学法测定锌受很多共存元素的干扰,需要进行繁琐的分离,分析一个试样花费时间长,试剂用量多.氨性底液极谱法只适合测定低含量的锌。在氯化钠-盐酸联胺-盐酸体系中只能测定15%以下的含锌样品.本文在前人工作的启发下,利用有机溶剂对金属离子极谱性能的影响,在底液中加入一定量的乙醇提高了极谱法测定锌的范围,不需分离,直接测定锌.方法简便、快速、准确,适合于0.1～30%锌的测定.
Determination of zinc is usually used EDTA volumetric method and ammonia bottom polarography (Beijing Mining and Metallurgical Research Institute, “Ore and Nonferrous Metals Analysis”, 1971). Determination of chemical zinc interference by many coexisting elements, the need for cumbersome separation, analysis of a sample takes a long time, reagent dosage.Animal bottom polarographic method is only suitable for the determination of low levels of zinc. In the sodium chloride-hydrazine hydrochloride-hydrochloric acid system can only determine the zinc content of less than 15% of the sample.In this paper, inspired by the previous work, the use of organic solvents on the polarographic properties of metal ions in the bottom liquid by adding a certain The amount of ethanol improves the determination of zinc range by polarography, without separation, direct determination of zinc method is simple, rapid and accurate, suitable for the determination of 0.1 ~ 30% zinc.