X-射线荧光光谱法测定锌铝铜合金中的铝、铜、铁、硅、镍、铅和镉

建立了X射线荧光光谱法测定锌铝铜合金ZnAl6Cu1中铝、铜、铁、硅、镍、铅和镉的分析方法。探讨了各元素的分析条件,比较了不同制样方式及不同放置时间对铝强度的影响。在最佳的仪器分析条件下,测定了微量元素的检出限及主、次元素的精密度和准确度。检出限结果表明:各微量元素的检出限均满足标准要求,Cd和Pb元素的定量限稍高。精密度和准确度结果表明,铝、铜、铁元素的测量相对标准偏差在2.1%~5.9%,分析结果与国家标准方法一致。

Determination of Al, Cu, Fe, Si, Ni, Pb and Cd in Zinc-Aluminum-Copper Alloy by X-ray Fluorescence Spectroscopy

A method for the determination of Al, Cu, Fe, Si, Ni, Pb and Cd in Zinc-Aluminum-Copper alloy (ZnAl6Cu1) by X-ray fluorescence spectroscopywas established. Analysis condition of each element was discussed. The influences of sample preparation method and storage time on aluminum counting rate were investigated. The detection limits of trace elements and the accuracies and precisions of primary and secondary elements in ZnAl6Cu1 were obtained under the optimum conditions. The results showed that thedetection limit of each trace element can satisfy the requirements of the standard methods. The relative standard deviations (RSDs) for aluminum, copper and iron were in the range of 2.1%~5.9%. The quantitative analytical results for each component by this method are consistent with those obtained by national standard method.