TY - JOUR
T1 - Factorial design approach to microwave dissolution
AU - Mohd, A. A.
AU - Dean, John
AU - Tomlinson, William
PY - 1992/11
Y1 - 1992/11
N2 - 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.
AB - 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.
KW - Acid digestion
KW - Biological material
KW - Direct current plasma atomic emission spectrometry
KW - Fractional factorial design
KW - Microwave dissolution
U2 - 10.1039/AN9921701743
DO - 10.1039/AN9921701743
M3 - Article
VL - 117
SP - 1743
EP - 1748
JO - Analytical Proceedings
JF - Analytical Proceedings
SN - 0003-2654
IS - 11
ER -