Determination of 7 impurity elements in pure magnesium by X-ray fluorescence spectrometry
The impurity elements in pure magnesium mainly include Si,Fe,Cu,Al,Mn,Zn and Pb with low contents.The wet chemical method has some shortcomings such as complicated determination procedures and long test period.Although the spark discharge atomic emission spectrometry can be used for rapid de-termination,there is a risk of contamination when a variety of metals are cross-tested.In this study,the samples were prepared using milling machine followed by rapid determination.The analytical method for the determination of Si,Fe,Cu,Al,Mn,Zn and Pb in pure magnesium by X-ray fluorescence spectrometry(XRF)was established.The standard sample analysis results showed that the measured values of each ele-ment were consistent with the certified values.This method effectively solved the problem of long test peri-od of wet chemical method as well as cross contamination in the determination of various metals by spark discharge atomic emission spectrometry.The actual sample analysis and inter-laboratory comparison re-sults indicated that the relative standard deviation(RSD)of the determination results for elements with content above 0.001 0％was less than 7％.The proposed method had good reproducibility and wide appli-cability.
pure magnesiumX-ray fluorescence spectrometry(XRF)impurity elementmilling machineplacement timeinter-laboratory comparison
NETL
NSTL
万方数据
