This paper studies the continuous determination of barium and strontium in tungsten concentrates by flame atomic absorption spectrometry. The tungsten concentrates is melted with sodium carbonate & sodium peroxide and the Ba and Sr are extracted with nitric acid. The optimum detection parameters are decided respectively. The results indicate this method, with the recovery of Ba & Sr were 94.2 %~96.3 % & 94 %~102.5 % respectively, is characterized by high sensitivity, high accuracy, low interference, and easy operation.%研究了火焰原子吸收光谱仪连续测定钨精矿中钡,锶含量的方法.试样经碳酸钠一过氧化钠熔融,熔融物用硝酸溶液提取,在仪器最佳工作条件下,快速、准确地连续测定钨精矿中钡、锶含量.实验表明该方法操作简便,灵敏度高,干扰少,钡的回收率为94.2 %~96.3%;锶的回收率为94.0 %~102.5%.
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