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Identification of lead in metal food can seams using 57Co RXRFS

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Abstract

Radioisotope-induced X-ray fluorescence spectrometry procedures developedfor screening solder for Pb are described. By using 57 Co as an excitationsource, food cans with Pb-soldered seams were easily distinguished from othertypes of metal cans. Limits of detection (3) for Pb in metal food can seamswere 0.1 and 0.3 mg Pb/cm 2 for count times of 1 hour and 3 minutes, respectively.Pb/Sn ratios were determined for commercial solders containing 0.6% to 84%Pb. Pb content was quantified as low as 0.07%, and Bi and Sb content couldbe determined for some commercial solders.

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  1. Elemental Research Branch (HFS-338), U. S. Food and Drug Administration, 200 C Street SW, Washington, DC, USA

    S. G. Capar

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  1. S. G. Capar
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Capar, S.G. Identification of lead in metal food can seams using 57Co RXRFS. Journal of Radioanalytical and Nuclear Chemistry 249, 77–81 (2001). https://doi.org/10.1023/A:1013285708331

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  • DOI: https://doi.org/10.1023/A:1013285708331

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