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锡在空气—乙炔火焰中易生成难离解的氧化物,灵敏度比较低,因而有利于高含量锡的原子吸收分析.本文通过试验确定了仪器(岛津AA—650原子吸收分光光度计,浜松制锡空心阴极灯)的最佳工作条件为:分析线,286.3nm,光谱通带0.5nm,灯电流10mA,燃烧器高度3mm,空气流量7.0升/min,乙炔流量2.2升/min.选定了溶液的盐酸酸度为2%(V/V).锡精矿中常见元素不干扰锡的测定.100ml试液中钠离子的允许量可达1.5g.本法对含锡量为52.84%的
Tin in the air - acetylene flame easy to generate dissociated oxides, the sensitivity is low, which is conducive to high atomic content of tin atomic absorption analysis.This paper determined the instrument (Shimadzu AA-650 atomic absorption spectrophotometer, Hamamatsu system Tin hollow cathode lamp) the best working conditions are: analysis line, 286.3nm, spectral passband 0.5nm, lamp current 10mA, burner height 3mm, air flow 7.0 l / min, acetylene flow 2.2 l / min selected The solution of hydrochloric acid acidity of 2% (V / V). Tin concentrate common elements do not interfere with the determination of tin .100ml test solution of sodium ions up to 1.5g. This method for the tin content of 52.84%