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Determination of Calcium in Dietary Supplements: Statistical Comparison of Methods in the Analytical Laboratory
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Garvey, Sarah L.; Shahmohammadi, Golbon; McLain, Derek R.; Dietz, Mark L. – Journal of Chemical Education, 2015
A laboratory experiment is described in which students compare two methods for the determination of the calcium content of commercial dietary supplement tablets. In a two-week sequence, the sample tablets are first analyzed via complexometric titration with ethylenediaminetetraacetic acid and then, following ion exchange of the calcium ion present…
Descriptors: Dietetics, Comparative Analysis, Statistical Analysis, Laboratory Experiments