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  • Title: Stannous ion quantitation in 99mTc-radiopharmaceutical kits.
    Author: Chervu LR, Vallabhajosyula B, Mani J, Chun SB, Blaufox MD.
    Journal: Eur J Nucl Med; 1982; 7(7):291-3. PubMed ID: 6288381.
    Abstract:
    A simple and inexpensive method for the estimation of stannous ion, Sn (II), in radiopharmaceutical kits is described. The method used is a potentiometric titration of Sn (II) in 1 N HCI medium, using potassium iodate as the oxidizing agent in an atmosphere of nitrogen. The apparatus includes pH meter, a platinum electrode, and a simple titration cell. Several commonly used radiopharmaceutical kits were analyzed for their Sn (II) content using this method. These studies indicate that the procedure can be used, as a routine quantitative test for the Sn (II) content of various 99mTc-labeled radiopharmaceuticals.
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