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微量锡的测定,经典极谱法不能满足生产要求。在盐酸-氯化物底液中,有钒(Ⅳ)存在时,锡(Ⅳ、Ⅱ)能产生极谱催化波,可应用于矿石和纯金属中微量锡的测定,干扰元素用碱熔和两次蒸馏分离。我们在文献的基础上,根据钢样特点,采用萃取分离,HCl-NaCl底液催化极谱测定,在-0.52V(对S.C.E)有催化波峰。适用于合金钢中0.00×-0.×％锡的测定。
Trace tin determination, classical polarographic method can not meet the production requirements. Tin (Ⅳ, Ⅱ) can produce polarographic catalytic wave in the presence of vanadium (Ⅳ) in hydrochloric acid-chloride solution. It can be applied to the determination of trace tin in ores and pure metals. Secondary distillation separation. Based on the literature, based on the literature, based on the characteristics of the steel samples, extraction and separation were used, and the HCl-NaCl bottom liquid catalytic polarography was used to determine the peak at -0.52V (vs. S.C.E). It is suitable for the determination of 0.00 × -0. ×% tin in alloy steel.