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采用原子吸收光谱法联合测定氧化铝粉中氧化钠、三氧化二铁含量。选用混合阶梯式匀速升功率的方式微波消解分析试样氧化铝粉5分钟,将上述两种杂质转化为可溶性铁盐和钠盐,用同一母液对上述两种杂质含量用吸收光谱法进行测定,采用与试样组成相似的标准溶液,用标准曲线法测定试样含量。以标准样品进行检测,分析结果与标准值相符,符合国家误差标准规定要求。
Determination of sodium oxide and ferric oxide in alumina powder by atomic absorption spectrometry. Select the mixed ladder type uniform power step microwave digestion analysis sample alumina powder 5 minutes, the above two impurities into soluble iron salt and sodium salt, using the same mother liquor on the two impurities measured by absorption spectroscopy, Using a standard solution with a similar composition as the sample, determine the sample content using the standard curve method. Testing with standard samples, the analysis results are in accordance with the standard values, in line with national standards for error requirements.