Abstract:

Based on Omnina that is a Epsilon3 ED-XRF type fluorescence spectrometer with polarization scattering energy，an analysis method for determination of major，minor and trace elements in drilling rock core samples was established.It is faster to determine the major，minor and trace elements using intensity to calculate overlap coefficient and taking compton line as internal standard to subtract interference，hence the analytical results will be more precision and accuracy.In addition，the curve obtained by spectral regression analysis can be used for all of the elements/components.The core samples are cut out pieces by hydraulic cutter，more importantly，analytical instrument and operation condition should be the best.The Omnina with automatic scanning sequence can be applied to detect all of the elements/components in the samples，also it has the advantage of analyzing multiple elements rapidly and simultaneously.The established new analytical method and obtained data are extremely helpful to the drilling construction progress，which will significantly improve the efficiency of construction production. The developed method was put into use for months of field pilot work in the Erguna mining area of Inner Mongolia and we have achieved good geological prospecting results.

Key words: ED-XRF, empirical correction, matrix correction, drilling rock core sample