【摘要】 <正> ICP光源已广泛和成功地应用于溶液样品的分析。由于固体样品的溶解处理麻烦,溶液进样技术又存在着易沾污和样品被稀释等局限性,所以本实验室致力于固体粉末直接进样法研究,设计了粉末进作器和封闭式ICP-arc加长炬管系统,简称ICP-arc。利用这些装置,可使更多还原

【Abstract】 A method for the simultaneous determination of Mn, Fe, Cr, Ni and Cu in organic matters with a powder introduction ICP-arc system has been developed. The results of analysis for the organic samples agree well with certified values. The RSD% are between 6. 03-13. 2% (n = 10) and the recovery ratios are between 95-115% for different elements. Using present method, the concentrations of all elements being determined in the sample are concentrated about 10-20 times. So it is extremely favorable when the quantity of the sample is small and/or the concentration of the element to be determined is low. This method offsets the effects of matrix, particle size and present form of the element on line intensity. It has lower detection limits.更多还原