电感耦合等离子体原子发射光谱法测定钾长石矿中的多种元素

Determination of Elements in Potash Feldspar Ores by ICP-AES

摘要: 以碳酸钠-四硼酸钠为助熔剂在950 ℃下熔融钾长石矿样品,熔融物用盐酸(3+7)溶液加热溶解后,采用电感耦合等离子体原子发射光谱法对钾长石中所含元素进行定性和定量分析.钾长石矿中至少含有11种元素,对其中含量较多的钾、铝、硅、钙、镁、钛、钡和锰等8种元素进行了测定,测定值的相对标准偏差(n=4)在0.68%~4.5%之间,加标回收率在90.9%~109%之间.

Abstract: The potash feldspar ore sample was melted under 950 ℃ with sodium carbonate and sodium tetraborate as fluxing agent.The melt was then dissolved in heated hydrochloric acid.ICP-AES was applied for qualitative and quantitative analysis of the elements in potash feldspar ores.The results showed that the potash feldspar ores contained at least 11 elements.Eight main elements,namely,K,A1,Si,Ca,Mg,Ti,Ba and Mn were determined,with RSD (n=4) in the range of 0.68%-4.5%.Recovery rates measured by standard addition method were in the range of 90.9%-109%.