TY - JOUR
T1 - The principle of pooled calibrations delivers full correspondence between uncertainties of measurements of Na, Mg and Ni when determined using HR-CS FAAS
AU - Andersen, Jens E.T.
AU - Moemedi, Keaboletse
AU - Katse, Kebabonye
N1 - Funding Information:
The financial support of Botswana International University of Science and Technology is gratefully acknowledged.
Publisher Copyright:
© 2023 The Authors
PY - 2023/2
Y1 - 2023/2
N2 - Methods for determination of elements in various types of samples are generally considered to be very precise and highly accurate. For reliable analysis of elements Na, Mg and Ni in food samples is it worthwhile to perform an extensive method validation of high-resolution continuum source flame atomic absorption spectrometry (HR-CS FAAS) according to the principle of pooled calibrations (PoPC). Under routine laboratory conditions of analysis, elevated levels of relative uncertainty of measurement reaching values of more than 50% were detected, which jeopardized the validity of results, even when the measurements in the present study were performed with samples of tap water and borehole water. Comparison of relative uncertainties with corresponding literature results indicates that sample-signal differences may be due to detector noise rather than specimen variations.
AB - Methods for determination of elements in various types of samples are generally considered to be very precise and highly accurate. For reliable analysis of elements Na, Mg and Ni in food samples is it worthwhile to perform an extensive method validation of high-resolution continuum source flame atomic absorption spectrometry (HR-CS FAAS) according to the principle of pooled calibrations (PoPC). Under routine laboratory conditions of analysis, elevated levels of relative uncertainty of measurement reaching values of more than 50% were detected, which jeopardized the validity of results, even when the measurements in the present study were performed with samples of tap water and borehole water. Comparison of relative uncertainties with corresponding literature results indicates that sample-signal differences may be due to detector noise rather than specimen variations.
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U2 - 10.1016/j.heliyon.2023.e13562
DO - 10.1016/j.heliyon.2023.e13562
M3 - Article
AN - SCOPUS:85150804334
SN - 2405-8440
VL - 9
JO - Heliyon
JF - Heliyon
IS - 2
M1 - e13562
ER -