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  • Title: Atomic absorption spectrometric determination of tin in canned foods using nitric acid-hydrochloric acid digestion and nitrous oxide-acetylene flame.
    Author: Dabeka RW, McKenzie AD.
    Journal: J Assoc Off Anal Chem; 1981 Nov; 64(6):1297-300. PubMed ID: 6273377.
    Abstract:
    Foods (5-40 g) are digested sequentially with HNO3 and HCI, diluted to 100 mL, and filtered, and tin is determined by atomic absorption using an N2O-C2H2 flame. Synthetic standards in 10% HCl are used. A positive interference by potassium is compensated by adding 100 micrograms potassium/mL to both standards and samples. Recoveries for 17 foods spiked with tin at levels between 40 and 500 micrograms/g ranged from 85 to 110% with a mean of 101%. Results agreed well with a solvent extraction atomic absorption method and a direct X-ray fluorescence method.
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