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Clinical Chemistry 10: 352-365, 1964;
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Clinical Chemistry, Vol 10, 352-365, Copyright © 1964 by the American Association for Clinical Chemistry

A Simplified Technique for Determination of Small Amounts of Calcium as Oxalate

Donald D. Van Slyke 1 and Paul E. Carson 1

1 Medical Research Center of the Brookhaven National Laboratory, Upton, N. Y.

Procedures for determination of calcium by oxalate precipitation are reviewed, and a method is described in which the calcium oxalate precipitate is both formed and washed in a filter tube with a fritted-glass filter. Washing with saturated calcium oxalate solution is completed in 1-2 min. The washed precipitate is redissolved in perchloric acid solution and the dissolved oxalate is either titrated or determined manometrically by the CO2 evolved from oxidation with ceric sulfate.

Submitted on June 3, 1963







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Copyright © 1964 by the American Association for Clinical Chemistry.