Study of factors affecting the results of natural water analyses by total reflection X‐ray fluorescence

The study aims to choose the conditions for the direct analysis of different types of natural water samples by total reflection X-Ray fluorescence spectrometry (TXRF). The effect of some factors on TXRF results was studied such as the surface density of dried water residue on the sample carrier, the dilution ratio of high-mineralized samples with ultrapure water and the solution of the detergent Triton X-100, the salt contents, the internal standard concentration, and repeated pipetting of an aliquot of fresh water. The influence of self-absorption phenomena on quantification results was demonstrated by using brine samples. The TXRF results for natural waters of varying salinity (brines, fresh waters, and ground waters) and model solutions are presented. For a number of analytes, the data obtained by TXRF were compared to those obtained by ‘wet’ chemistry and inductively coupled plasma mass spectrometry. Copyright © 2013 John Wiley & Sons, Ltd.

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