铝土矿中杂质元素的ICP-AES分析研究

Analysis of Impurity Elements in Bauxite Ore by ICP-AES Method

采用高频熔样-电感耦合等离子体原子发射光谱（ICP—AES）法同时测定铝土矿中的硅、铁、钙、镁、钛、钾、钠等元素。对影响其光谱测量的各种因素进行了较为详细的研究，确定了试验的最佳测定条件。结果表明，方法的检出限为0．005～0．653μg／mL，回收率为91．66％～105.40％，RSD小于2.63％。该方法准确、快速、简便，应用于铝土矿的测定，结果满意。

High frequency sample fusion method-inductance coupled plasma atomic emission spectrum method （ ICPAES） were used in combination to detect the elements such as silicon, iron, calcium, magnesium, titanium, potassium and sodium in bauxite ore. Detailed study was made on the factors influencing the spectrometry and the optimal detecting conditions in the test were determined. The results show that the detection limit was 0. 005 -0.653 μg/mL; the recovery, 91.66% - 105.40% and RSD, less than 2.63%. Therefore, this method is accurate, rapid and simple and can achieve satisfactory results when used in the measurement of bauxite ore.