Evaluation of Detection Limits with Wavelength Dispersive X-Ray Fluorescence Spectrometry

Year 2017, Volume: 3 Issue: 2, 38 - 47, 30.11.2017

Ebru Senemtaşı Ünal Neslihan Ekinci

Abstract

The influence of analyte mass concentration
on the determination of detection limits has been investigated by using WDXRF (Wavelength
dispersive X­ ray fluorescence) spectrometry. It is aimed to obtain the analyte
mass concentration that is necessary to find the best detection limit values.
Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, As, Y, Zr, Nb, Mo, Ag, Cd, Sb, Nd, Gd, Er
elements and binary and triple combination of these elements have been used.
The samples have been selected considering the absorption edges due to the
importance of the effect of matrix absorption and enhancement. The elements
which have absorption edges that are close to each other have been used observe
the matrix absorption and enhancement. The results of this study are given in
tables and graphs. From this results corresponding to the interval of 5­25 times the best value of the detection limits of analytical concentration
values are found to be the ideal values. In this study, the experimental apparatus
and sample preparation procedures used are presented. It is concluded that
WDXRF spectrometry is a suitable technique for the determination of detection
limits.

Keywords

analyte, detection limits, WDXRF, matrix

References

• Assoc. Proffessor İbrahim HAN Assist. Proffessor Pınar BAYKAN Assist. Proffessor Harun GÜNEY