The determination of vanadium? Titanium, aluminium, magnesium and manganese in vanadium-titanium-iron concentrate by inductively coupled plasma atomic emission spectrometry (ICP-AES) was proposed. In this method, the anhydrous sodium carbonate and sodium tetraborate were used as flux. The sample was firstly melted at 1 000 ℃ for 15 - 20 min. Then, the fusant was leached with 10 % HC1 (volume fraction). The vanadium, titanium, aluminium, magnesium and manganese in leachate were determined by ICP-AES. The type and concentration of acid for sample leaching were tested, and 10 % HC1 (volume fraction) was finally selected. The spectral lines of five elements were investigated. The spectral lines with high sensitivity, no or low matrix interference were used as analytical lines. The matrix interference was eliminated by matrix matching method in preparation of calibration curve. The standard samples (GBW07227 and BH0101) were determined for 10 times by the proposed method. The accuracy and precision of determination results were both good, and the relative standard deviations (RSD, n = 10) were 0. 59 %-4. 8 %. Moreover, this method was applied to the determination of 10 samples in production materials. The results were consistent with those obtained by chemical analysis.%提出了用电感耦合等离子体原子发射光谱法(ICP-AES)测定钒钛铁精矿中钒钛铝镁锰.以无水碳酸钠和四硼酸钠为熔剂,在1 000℃的温度下将试样熔融15～20 min,然后用体积分数为10％ HCl浸取熔融物,浸出液中的钒、钛、铝、镁和锰用ICP-AES法测定.对浸取样品的酸种类及浓度进行了试验,最终选择了体积分数10％的盐酸.考察了5种元素的谱线并选择灵敏度高、基体无干扰或干扰很小的谱线作为分析谱线.制作校准曲线时采用基体匹配的方法消除基体干扰.依据所建立的方法对标准样品(GBW07227、BH0101)分别测定10次,测定结果的准确度和精确度均较好,相对标准偏差(n=10)在0.59％-4.8％范围内.此外,用该方法测定从生产原料中抽取的10个样品,测定结果与化学分析方法的测定结果一致.
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