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提出了粉末光谱法测定Al及Al_2O_3中九个杂质元素的方法。考察了Al_2O_3晶型、制备试样时高温的灼烧对分析结果的影响。加入选择的缓冲剂,提高了方法的稳定性和灵敏度。各个元素的测定下限在0.0001—0.001％之间。相对标准偏差在14％以下。本法的特
A method for the determination of nine impurity elements in Al and Al_2O_3 by powder spectroscopy was proposed. The crystal form of Al 2 O 3 and the influence of high temperature burning on the analysis results were investigated. Add the selected buffer to improve the stability and sensitivity of the method. The lower limit of determination of each element is between 0.0001-0.001%. The relative standard deviation is below 14%. Special of this law