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在pH5.0的0.3M醋酸钠-0.008％巯基乙酸底液中,锡(Ⅳ)在-0.65伏(对S.C.E)产生灵敏的络合吸附波,锡(Ⅳ)浓度在4.2×10~(-8)～1.0×10~(-5)M内与波高有直线关系。试验了20多种离子的干扰情况及消除干扰的方法,成功地测定了几种矿石和三氧化钨及三氧化钼中的微量锡。
Tin (Ⅳ) produced a sensitive complex adsorption wave at -0.65 V (to SCE) in 0.3 M sodium acetate-0.008% thioglycolic acid solution at pH 5.0 with a tin (Ⅳ) concentration of 4.2 × 10 ~ 8) ~ 1.0 × 10 ~ (-5) M and wave height have a linear relationship. Tested more than 20 kinds of ions interference and interference methods, successfully measured several ores and tungsten trioxide and molybdenum trioxide trace tin.