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本文研究了在硝酸-柠檬酸介质中,以邻苯二酚紫(简称PV)-溴化十六烷基三甲胺(简称CTAB)分光光度法测定微量锡的适宜条件及有关杂质的干扰情况。制定了用分光光度法直接测定金属铅中微量锡的新方法,方法准确、快速、灵敏度高,适用于一般铝产品中锡的检验。
In this paper, the suitable conditions for the determination of trace tin and the related interference by using CTAB (CTAB) spectrophotometry in nitric acid-citric acid medium were studied. A new method for the direct determination of tin in metallic lead by spectrophotometry is developed. The method is accurate, rapid and sensitive, and is suitable for the determination of tin in common aluminum products.