用常规化学方法分析石英砂中的氧化钾,氧化钠、氧化镁、氧化钙和氧化铁,需要分离干扰元素后再进行测定,方法复杂、手续繁琐、时间冗长、误差较大,不能满足生产需要。现改用原子吸收测定后,具有方法简单、准确快速、灵敏度高、选择性好、干扰元素少等优点。但对于测定微量铝,在缺乏氧化亚氮气源情况下,使用空气——乙炔火焰的原子光谱测定是无法开展的,因此,为了做到一机(原子吸收分光光度计)两用(原子光谱和光度法),我们在不改变分光系统、检测系统和不拆下雾化室、雾化器, Analysis of quartz, sand, potassium oxide, sodium oxide, magnesia, calcium oxide and iron oxide by conventional chemical methods requires the separation of interfering elements prior to the determination. The method is complicated, the procedure is cumbersome, the time is long and the error is large, which can not meet the production needs . Now use atomic absorption spectrometry, with the method is simple, accurate and rapid, high sensitivity, good selectivity, fewer interference elements and so on. However, for the determination of trace amounts of aluminum, atomic-spectrometry using an air-acetylene flame can not be performed in the absence of a nitrous oxide source. Therefore, in order to achieve a dual-purpose atomic absorption spectrophotometer (atomic spectroscopy and Photometry), we do not change the spectroscopy system, the detection system and does not remove the atomization chamber, nebulizer,