Sensitivity and Lower Limit Detection Determined of XRF for Copper and Zinc Suspended in lubricated Grease

Abstract

In this work different weight percent of copper and zinc powders of 20 ìm particlesize were blended carefully with grease , and the final weight of samples are 2 g . Thesamples were placed in containers were made from tephlon of 2.5 cm as a diameter . Thebottom window of container was fitted with 6 ìm mylar film . The samples weresubjected to X- ray fluorescence to measure the Cu Ká and Zn Ká lines intensities .Sensitivity (m) and Lower Limit Detection (LLD) were calculated and plotted againstthe weight fraction for all samples .