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Comparison of two digestion methods for elemental determinations in plant material by ICP techniques
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
Svensk Grundämnesanalys AB.
Svensk Grundämnesanalys AB.
1999 (English)In: Analytica Chimica Acta, ISSN 0003-2670, E-ISSN 1873-4324, Vol. 378, no 1-3, p. 191-200Article in journal (Refereed) Published
Abstract [en]

Two digestion procedures have been tested on plant samples for application in the determination of a wide range of major, minor, and trace elements by a combination of inductively coupled plasma atomic emission spectrometry (ICP-AES) and inductively coupled plasma mass spectrometry (ICP-MS). The first is an open-vessel digestion with concentrated nitric acid and the second is a microwave digestion with a mixture of concentrated nitric acid and hydrogen peroxide. The detection limits were found to be controlled by instrumental capabilities in ICP-AES and by digestion blank levels in ICP-MS. The accuracy of the overall analytical procedures was estimated by analysis of a certified reference material. Among elements for which certified concentrations are available, good agreement between measured and reference values was found for 15 and 16 elements in the first and second procedure, respectively. The precision was assessed from replicate analysis (including sample preparation) of reference material and a number of environmental samples and was found to be 5% RSD or better when analyte concentration exceeds quantification limit. Owing to the multielemental capabilities and to the wide analytical range of the ICP techniques used, more than 30 elements can be determined in plant materials at concentrations varying from tens of pg g-1 to wt%.

Place, publisher, year, edition, pages
1999. Vol. 378, no 1-3, p. 191-200
National Category
Geochemistry
Research subject
Applied Geology
Identifiers
URN: urn:nbn:se:ltu:diva-6025DOI: 10.1016/S0003-2670(98)00635-7Local ID: 4380fc20-4c43-11de-afea-000ea68e967bOAI: oai:DiVA.org:ltu-6025DiVA: diva2:978901
Note
Godkänd; 1999; 20090529 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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CiteExportLink to record
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