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  Home > JCE Print > Journal of Chemical Education > Issues > 2005  > August  >
In the Laboratory
Mineral Analysis of Whole Grain Total Cereal
Paul Hooker
Physical Science Department, Westminster College, Salt Lake City, UT 84105
Cover
August 2005
Vol. 82 No. 8
p. 1223
Abstract
This article describes the quantitative analysis of the elements iron, zinc, and calcium in Whole Grain Total Cereal, a cereal product that claims to contain 100% of the daily value of several vitamins and minerals. This experiment can be implemented at several instructional levels including chemistry courses for science and nonscience majors, and in more advanced chemistry courses such as quantitative or instrumental analysis. The elemental iron added as a supplement to the cereal is extracted using a magnetic stirrer bar and stirrer plate and quantified using complex formation and visible spectroscopy. The quantities of zinc, calcium, and the naturally occurring iron present in the wheat grain, are determined by atomic absorption spectroscopy having first rendered the sample to an acid-soluble ash.
Supplement
Instructions for the students, including prelab questions and lab report information, and notes for the instructor are available.
*  Contents JCE2005p1223W.doc (Microsoft Word)
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JCE2005p1223W.zip
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*  Citation
 Hooker, Paul. J. Chem. Educ. 2005 82 1223.
*  Keywords
 Analytical Chemistry; Calcium; Consumer Chemistry; First-Year Undergraduate / General; Food Science; Hands-On Learning / Manipulatives; Iron; Laboratory Instruction; Nonmajor Courses; Nutrition; Quantitative Analysis; Second-Year Undergraduate; Upper-Division Undergraduate; UV-Vis Spectroscopy; Zinc
*  History
 Created:
Last Updated:		 July 5, 2005
July 8, 2005
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