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通常火焰原子吸收法测定锡的灵敏度较低,只能达到微克级,这不能满足痕量分析的要求。氢化物转化法测定锡有灵敏度高、干扰少、操作简便的特点。我们以硼氢化钾作还原剂,以长14厘米内径为0.85厘米的电热开口式石英管为原子化器,以带有进出气管及注射口的磨口(29号)长径瓶作氢化物发生瓶,详尽地考察了酸介质、酸浓度、石英管管径和结构及加热温度、载气流量、波长、价态和体积效应等操作条件和干扰情况,从而选用了
Flame atomic absorption spectrometry is usually used to determine the sensitivity of tin is low, only to microgram level, which can not meet the requirements of trace analysis. Hydride conversion method for the determination of tin with high sensitivity, less interference, easy to operate features. Using potassium borohydride as reductant and electrothermally open quartz tube 14 cm long and 0.85 cm long as the atomizer, a grindstone (No. 29) flask with inlet and outlet tubes and an injection port was used for hydride generation Bottle, a detailed examination of the acid medium, acid concentration, quartz tube diameter and structure and heating temperature, carrier gas flow, wavelength, valence and volume effects and other operating conditions and interference conditions, which selected