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一、铝及其合金的分析表1列举的是日本工业标准(JIS)中与铝有关的发射光谱和原子吸收分析法。发射光谱分析法在 JIS 中只有金属电极法,今后从实用方面出发要进一步考虑溶液法的利用,此时,应考虑包含不宜用原子吸收法测定的Si、Ti、Sn、V 等10元素以上的同时测定,一般而言,有色金属材料的分析,由于是从纯金属中痕量或微量杂质到合金中极高含量的成分的测定,浓度范围非常广,在这一点上,比原子吸收法定量范围更广的发射光谱法是有利的。而且,一般不需要像原子吸收法测定镁时添加锶那样加入干扰抑制剂。铝试样的标准处理法是称取0.25～0.50克试样,用盐酸或盐酸和过氧化氢分解,制成100毫升溶液。标准溶液也含有同量的铝。表2列出了分析元素的测定下限(检出限×5)随溶液中铝浓度变化的情况。As、Au、
I. ANALYSIS OF ALUMINUM AND ITS ALLOYS Table 1 lists the emission spectra and atomic absorption analysis methods related to aluminum in Japanese Industrial Standards (JIS). In the emission spectrometry, only the metal electrode method is used in JIS, and further use of the solution method is considered from a practical point of view. In this case, it should be considered that it contains elements such as Si, Ti, Sn and V which are not suitable for measurement by atomic absorption At the same time, in general, the analysis of non-ferrous metal materials, due to the determination of very high levels of impurities from trace or trace impurities in pure metals to very high concentrations of the alloy, at this point is more quantitative than the atomic absorption method A broader range of emission spectroscopy is advantageous. In addition, it is generally not necessary to add an interference suppressor like strontium when measuring magnesium by atomic absorption spectrometry. The standard treatment of aluminum samples is weighed 0.25 ~ 0.50 grams of sample, with hydrochloric acid or hydrochloric acid and hydrogen peroxide decomposition, made of 100 ml solution. The standard solution also contains the same amount of aluminum. Table 2 lists the lower limit of determination of the analyte (detection limit × 5) as a function of aluminum concentration in the solution. As, Au,