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A modified standard addition method in X-ray fluorescence spectrometry
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry, Analytical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry, Analytical Chemistry.
1993 (English)In: Talanta: The International Journal of Pure and Applied Analytical Chemistry, ISSN 0039-9140, E-ISSN 1873-3573, Vol. 40, no 5, 669-674 p.Article in journal (Refereed) Published
Abstract [en]

A modified standard addition method for single element determination by X-ray fluorescence spectrometry has been studied. The attenuation properties of the standard added samples are kept constant by adding decreasing amounts of an attenuation modifier along with increasing amounts of a standard. In this way the standard addition curve will be a straight line in cases where the ordinary standard addition curve is non-linear, and linear regression can be used to evaluate the concentration of the analyte. Standard additions of oxides of a number of elements, with and without modifier, have been made to cellulose powder or a mixture of aluminium oxide and polyethylene as matrices in order to test the method. The method has been applied to the determination of zinc in fly-ash from a steel work and of iron in cement. The fly-ash contained about 5% of zinc and the cement samples between 2 and 5% of Fe(2)O(3). The results were compared with those obtained by ICP-AES after decomposition of samples in lithium tetraborate or lithium metaborate and dissolution of the melt in 10%(v/v) nitric acid. The results agreed within 2%, relative, for fly-ash and within 3-6%, relative, for cement samples.

Place, publisher, year, edition, pages
1993. Vol. 40, no 5, 669-674 p.
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Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-151853DOI: 10.1016/0039-9140(93)80276-WISI: A1993LA52800014PubMedID: 18965684OAI: oai:DiVA.org:uu-151853DiVA: diva2:411504
Available from: 2011-04-18 Created: 2011-04-18 Last updated: 2017-12-11Bibliographically approved

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Andersson, MaritOlin, Åke

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