Quality assurance system for a decomposition method as demonstrated for the Wickbold combustion technique |
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| Authors: | D Erber Jürgen Roth Karl Cammann |
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| Institution: | (1) Institut für Chemo- und Biosensorik e.V., Abteilung Angewandte Atomspektroskopie, Mendelstrasse 7, D-48149 Münster, Germany Tel.: +49-251-9802836; Fax: +49-251-9802812; e-mail: erber@uni-muenster.de, DE;(2) Heraeus Quarzglas GmbH, Bereich Labortechnik, Reinhard-Heraeus-Ring 29, D-63801 Kleinostheim, Germany Tel.: +49-6027-5077284; Fax: +49-6027-5077233, DE |
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| Abstract: | A five-step model for a quality assurance system is developed for an internal quality control check. It includes the quality
control of the decomposition method and the detection method as steps belonging together. The Wickbold combustion technique
as decomposition method in combination with atomic absorption spectrometry was chosen. The vaporization of the elements mercury,
arsenic, lead, antimony and selenium is based on combustion in an oxyhydrogen flame. To check the efficiency of the analytical
system, the uncertainty of results was calculated on the basis of the "Guide to the Expression of Uncertainty in Measurement".
Received: 13 January 1997 · Accepted: 29 March 1997 |
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| Keywords: | Quality assurance Decomposition method Wickbold combustion technique Uncertainty of results |
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