Issue 6, 2001

Abstract

Three different techniques of instrumental analysis applied at ISAS were evaluated within a proficiency test, organised by IRMM in Geel. The 3 techniques, in particular flame atomic absorption spectrometry (FAAS), inductively coupled plasma mass spectrometry (ICP-MS) and total-reflection X-ray fluorescence (TXRF) were used for multielement trace analysis of a sediment sample after digestion. The reported results of up to 9 elements were evaluated with respect to the reference values after the disclosure of the latter. The relative deviations, mostly <4%, demonstrate the high accuracy of the 3 techniques. In addition, the uncertainty bars of report and reference show a high degree of overlapping, which gives evidence that the mean values are not significantly different. The high ranking of ISAS results among all 239 participants of the test confirms these findings. With regard to accuracy, ICP-MS and TXRF are somewhat inferior to conventional FAAS but in their favour they are labour- and time-saving and have a good detection power.

Article information

Article type
Technical Note
Submitted
15 Feb 2001
Accepted
22 Mar 2001
First published
15 May 2001

J. Anal. At. Spectrom., 2001,16, 658-663

Results of proficiency testing with regard to sediment analysis by FAAS, ICP-MS and TXRF

R. Klockenkämper, F. Alt, R. Brandt, N. Jakubowski, J. Messerschmidt and A. von Bohlen, J. Anal. At. Spectrom., 2001, 16, 658 DOI: 10.1039/B101481L

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