Calcium Analysis Journal

Calcium Analysis Journal - ANALYSIS OF CALCIUM CONTENT OF A...

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ANALYSIS OF CALCIUM CONTENT OF A COMMERCIAL CALCIUM TABLET AUTHOR NAMES Jeanne Askins*, Nicholas Dowden, Carla Paulo. AUTHOR ADDRESS Texas A&M University, College Station, TX. AUTHOR EMAIL ADDRESS [email protected] RECEIVED DATE December 12 th , 2010. TITLE RUNNING HEAD Determining the amount of calcium in a tablet. CORRESPONDING AUTHOR FOOTNOTE 5940 Tradewind Point, Colorado Springs, CO, 80923 ABSTRACT The objective of this research was to identify the correct amount of calcium in tablets of Calcinate produced by Eastern Prime Pharmaceuticals. Recently, many consumers complained that the company reduced the amount of calcium without relabing their products. The company claims to have 800 mg of calcium per tablet. We tested the tablet sample using three different procedures: Complexometric Titrimetry, Potentiometric Analysis using an Ion Selective Electrode and Flame Atomic Absorption Analysis. Each experiment found different results, but all of them differ from the value declared by the company. KEYWORDS Eastern Pharmaceuticals Calcinate, Complexiometric Titrimetry, Potentiometry with Ion Selective Electrode, Flame Atomic Absorption Analysis BRIEFS This research includes a description of the techniques utilized, the data obtained during experiments and the conclusion reached by the team responsible for the research. 1
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MANUSCRIPT TEXT In the past 15 years, the company Prime Eastern Pharmaceutical has been known to produce high quality calcium tablets known as Calcinate. They are used as dietary supplements and were one of the top-sellers in the market. However, recently customers started lawsuits against the firm claiming that the amount of calcium that the company states in their tablet is not correct and that therefore, the product should be relabeled. Our team decided then to confirm if these claims are truthful or if the company has been honest about the amount of calcium present. To discover the amount of calcium present in the tablets, three different techniques will be used: Complexometric Titrimetry, Potentiometric Analysis using a Calcium Selective Electrode and Flame Atomic Absorption Analysis. Information About the Tablet Sample Analyzed: Main Component: Calcium Carbonate Other Components present: Maltodextrin. Powdered Cellulose, Hypromellose, Mineral Oil, Titanium Oxide, Triethyl Citrate, Polysorbate 80, Carnauba Wax, Stearic Acid, Magnesium Stearate, Crospovidone and Vitamin D. Calcium carbonate, the main compound being analyzed, has the chemical formula CaCO 3 . It is commonly found in rocks around the world and it is the one of the main components of eggshells, snails and pearls. Calcium carbonate is commonly used for medicinal purposed, especially as a nutritional supplement, but also as an antacid. Excessive consumption may be harmful. The structure for this compound is the following: 2
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The preparation of this compound for industry is mainly through mining and quarrying. Calcium carbonate is commonly found in minerals, in the form of polymorphs, such as aragonite, calcite and vaterite. It is also found in rocks such as chalk, limestone, marble and travertine.
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