Factorial design approach to microwave dissolution

Mohd, A. A., Dean, John and Tomlinson, William (1992) Factorial design approach to microwave dissolution. Analyst, 117 (11). pp. 1743-1748. ISSN 0003-2654

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Abstract

A fractional factorial design has been used to explore the variables that affect microwave dissolution using perfluoroalkoxy (PFA)-Teflon digestion vessels. Optimum operating conditions for National Research Council of Canada, certified reference material TORT-1 Lobster Hepatopancreas and National Institute of Standards and Technology, Standard Reference Material (SRM) 1575 Pine Needles, were obtained using this procedure. The optimum conditions found for each variable are: 0.25 g sample mass, 6 ml of concentrated hydrochloric acid, 6 ml of concentrated nitric acid, 3 ml of concentrated hydrofluoric acid and 90% microwave power for a total dissolution time of 15 min. Results for Ca, Fe, Cu and Zn in TORT-1 and Ca and Fe in SRM 1575 were in agreement with the certified values.

Item Type: Article
Uncontrolled Keywords: Acid digestion; Biological material; Direct current plasma atomic emission spectrometry; Fractional factorial design; Microwave dissolution
Subjects: F100 Chemistry
Department: Faculties > Health and Life Sciences > School of Life Sciences > Applied Sciences
Depositing User: Becky Skoyles
Date Deposited: 18 Feb 2015 09:47
Last Modified: 10 Aug 2015 11:53
URI: http://nrl.northumbria.ac.uk/id/eprint/18619

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