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钽铌中微量锡的分析方法,目前尚未见到资料介绍。鉴于生产、科研的实际需要,经试验确定:用氢氟酸-硝酸分解金属钽铌,焦硫酸钾分解氧化物,在含酒石酸、柠檬酸的硫酸介质中萃取碘化物分离锡,在pH0.7的柠檬酸-硫酸介质中用邻苯二酚紫(PV)-溴化十六烷基三甲基铵(CTAB)胶束增溶光度法测定微量锡。方法较准确、灵敏、快速。
Tantalum and niobium in the analysis of trace tin, has not yet seen the introduction of information. In view of the actual needs of production and scientific research, it was determined through experiments that the decomposition of metal tantalum and niobium with potassium hydrofluoride-nitric acid and the decomposition of oxides of potassium pyrosulfate with iodide in sulfuric acid medium containing tartaric acid and citric acid, Determination of trace tin with micellar solubilization spectrophotometry using catechol violet (PV) - cetyltrimethylammonium bromide (CTAB) in citric acid - sulfuric acid medium. Method is more accurate, sensitive and fast.