电感耦合等离子体原子发射光谱法测定三氯化铑中11种杂质元素

铑化合物中杂质元素的测定,无统一的标准方法,产品标准中杂质元素分析通常是将化合物还原为铑粉后以摄谱法测定,该方法既需要将化合物还原成铑粉,又需要消耗粉末光谱标样,分析流程长,成本高。实验采用盐酸-硝酸混合酸溶解样品,选择Ni 221.647 nm、Fe 259.940 nm、Cu 324.754 nm、Al 396.152 nm、Pb 220.353 nm、Pd 340.458 nm、Pt 299.797 nm、Ca 393.366 nm、Mg 279.553 nm、Zn 213.856 nm、Cr 205.552 nm为分析谱线,通过扣除背景消除了背景干扰,再通过实验证明无基体效应以及被测元素之间无干扰的基础上,建立了电感耦合等离子体原子发射光谱法(ICP-AES)测定三氯化铑中11种杂质元素的方法。各元素校准曲线的线性相关系数r均大于0.999;方法定量限均小于0.001%(质量分数)。实验方法用于测定三氯化铑中镍、铁、铜、铝、铅、钯、铂、钙、镁、锌、铬,结果的相对标准偏差(RSD,n=11)为6.4%～16.5%;三氯化铑中11种杂质元素的测定结果与采用国家标准方法GB/T 1421—2004测定的结果相吻合。

Review on the application of X-ray fluorescence spectrometry in field analysis

Field analysis was an eternal subject for geological and mineral industry, and X-ray fluorescence spectrometry (XRF) was the most convenient and effective technologies for field analysis. In the paper, the application of X-ray fluorescence spectrometry in field analysis and logging, shipboard and underwater field measurement and lunar rock exploration was reviewed. In terms of land field analysis, instrument development, field experiment and application research were reported, and the field application were also reported which included mineral exploration, geochemical exploration, mine analysis, mining environment investigation, rock core detection, X-ray fluorescence logging and field analysis of multi-function vehicle. In terms of on-board and underwater field analysis, the application of shipborne on X-ray fluorescence analysis instrument in the survey of ocean polymetallic nodules, seamount cobalt rich crusts and deep-sea rare earth resources in China was reviewed, and the experimental research on underwater in-situ analysis equipment for seabed metal minerals developed by China was also introduced. In terms of lunar rock exploration, the application of X-ray spectrum detection system carried by Chang′e-1 and Chang′e-2 was introduced. There were 117 citations in the paper.