Simultaneous Determination of Calcium and Magnesium in Human Blood Serum by Atomic Absorption Spectrophotometer

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Abstract
Simultaneous determination of calcium and magnesium content in human blood serum has been reported as a routine clinical laboratory method, which is rapid, simple, and requires 50 δ of serum for complete analysis with triplicate runs. This is accomplished using a Model 1250 Varian Techtron Atomic Absorption Spectrophotometer with the stoichiometric nitrous oxide-acetylene flame of 0.2 cm red-cone height. Calcium and magnesium standards and also the serum specimens are prepared in aqueous medium containing 2000 ppm potassium chloride. Serum specimens are ultimately diluted to 1:100 fold. About 40–50 samples can be analyzed per hour of instrument operation, if standard solutions and diluted serum specimens are readily available.

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