The accurate measurement of dose rate is the key issues to obtain reliable ESR age.In this article

we used X-ray fluorescence spectrometry to determine the U

Th

K content of the fluvial sediments.And the standard working curves were established using the national rock reference material.Setting the lower X-ray power and the matrix effect

U

Th

K content in the fluvial sediment were investigated.The results show that the method recovery rate of U and Th is less than 15 %.Comparing with the measurement data from the α-counting and Atomic Spectrometry analysis

the dose rate difference is less than 5 %.It shows that the X-ray fluorescence spectrometry method can fit for the requirement for obtaining the U

Th

K content of fluvial sediment for ESR dating.