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Screening of foods and related products for toxic elements with a portable X-ray tube analyzer

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Abstract

Capabilities of a portable X-ray tube-based analyzer were evaluated for screening foods, thin films, and ceramic glazes for toxic elements. A beverage spiked with Cr, Cu, and As and cocoa powder spiked with As and Pb could easily be distinguished from unadulterated products when analyzed through their original container walls. With calibration, results for thin films and ceramic glazes yielded accurate Pb results. Limits of detection (LODs) were 0.2–15 and 15 μg cm−2, respectively, for Pb and Cd in thin films and about 2 μg cm−2 for Pb in glazes. With analysis times of 0.5–1 min, sensitivities and LODs were superior to those obtained with radioisotopic X-ray fluorescence analysis.

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Authors and Affiliations

  1. Chemical Contaminants Branch (HFS-716), Office of Regulatory Science, US Food and Drug Administration, 5100 Paint Branch Parkway, College Park, MD, 20740-3835, USA

    David L. Anderson

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  1. David L. Anderson
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Correspondence to David L. Anderson.

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Anderson, D.L. Screening of foods and related products for toxic elements with a portable X-ray tube analyzer. J Radioanal Nucl Chem 282, 415–418 (2009). https://doi.org/10.1007/s10967-009-0161-0

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  • DOI: https://doi.org/10.1007/s10967-009-0161-0

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