偏硼酸锂熔融-电感耦合等离子体发射光谱法测定铝土矿石中多种元素

Determination of elements of bauxite with lithium metaborate fusion inductively coupled plasma atomic emission spectrometry

建立了电感耦合等离子体发射光谱法同时测定铝土矿石中二氧化硅、三氧化二铝、三氧化二铁、氧化钙、氧化镁、氧化钾、氧化钠、二氧化钛、五氧化二磷9种元素含量的分析方法。采用偏硼酸锂熔融样品,通过试验确定了各元素的分析谱线,对试液的酸度进行了探讨。9种元素的检出限为0.037μg/ml～0.705μg/ml,加标回收率为97.59%～101.49%,测定结果的相对标准偏差0.83%～3.20%(n=6).该方法灵敏度高,适用于铝土矿石多种元素的同时测定。

An analytical method of inductively coupled plasma atomic emission spectrometry method for the simultaneous determination of bauxite, silica three two aluminum oxide, ferric oxide, calcium oxide, potassium oxide, sodium oxide, titanium dioxide, Magnesium Oxide, P2O5 content of 9 elements. The lithium metaborate fusion sample, the analytical lines of the elements were determined through the experiment on the acidity of the sample solution is discussed. 9 elements of the detection limit of 0.037g/ml～0.705g/ml, and the recovery rate was 97.59%～101.49%, the relative standard deviation was 0.83% ～3.20% （n=6）. The method has high sensitivity, suitable for determination of bauxite in various elements at the same time.