ICP-AES法同时测定锰矿石中铁、铝、钛、钙、镁、磷、钡、铅的含量

锰矿石样品用HNO3-HF-HClO4酸溶除硅后，对采用ICP-AES法测定其中的铁、铝、钛、钙、镁、磷时，同时测定钡、铅的相关条件进行了试验。主要对酸溶样能否分解重晶石或天青石等含钡矿物进行了探讨，测定了3个国家级标准样品。测定结果与标准值吻合。用标准加入法测得的钡和铅的回收率分别为96．0％-100．5％，97．1％～100．0％。用该法对含钡量较高的澳大利亚锰矿进行分析，测定结果的相对标准偏差为0-82％，并将测定结果与X荧光光谱法测定结果进行了比对。

Simutanous Determination of Fe, AI, Ca, Ti, Mg, P, Ba and Pb in Manganese Ores by ICP-AES

The conditions for the determination of Fe, AI, Ti, Ca, Mg, P, Ba and Pb in manganese ores by ICP-AES were tested. In this method the samples were dissoled in nitric acid-hydrofluoric acid-perchloric acid system. The decomposition of barium-bearing minerals sample by acid was discussed. Three national certified reference materials were determied, and the results were consistent with the certified value. The recoveries of barium and lead were 96.0%-100.5%, 97.1% -100.0 %, respectively. Manganese ore sample from Australia which barium content was high were determined by the method, the relative standard deviation was 0.82%. The detecton results were compared with those of X fluorescence method.