Abstract
The pressed powder sample was determined by Epsilon 5 high-energy polarized energy dispersive X-ray fluorescence (EDXRF) spectrometer. The correlation coefficient of the standard curve method is 0.991 0. The precision is 2.98% and the relative deviation of the measurement standard samples is up to 6.40%, which showed that the precision and accuracy of the method were also good. Simultaneous measurement of seven soil samples with this method and γ-spectrometer were carried, the results of two analytical methods was compared using a paired t-test by SPSS program, which showed that there was no significant difference in the two sets of data. The results predicated that EDXRF could be a potential simple method for analyzing 40K in soil samples.
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