Abstract
A modification of the U.S. Food and Drug Administration (FDA) lead screening test of ceramic ware was made to screen large numbers of samples in a short time frame. Ceramic ware in use by Davis and Sacramento, California residents was tested. Lead was leached from ceramic ware with citric acid and identified by rhodizonic acid in this quick, qualitative test. Of 92 individual pieces of pottery tested, approximately 6.6% were positive for leachable lead. Approximately 67% of the positive samples were handmade in Mexico. This rapid test is sensitive to two (2) parts per million (ppm, μg/g) leachable lead. Ceramic ware with detectable leachable lead levels may present a health risk to individuals who habitually use such items for food storage and/or consumption. Because only 20–30 minutes is needed to perform the test, immediate communication of results to the participant is possible.
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Beale, A.M., Craigmill, A.L. & Wetzlich, S. A rapid lead test: Public outreach and testing to detect leachable lead in ceramic ware. Arch. Environ. Contam. Toxicol. 20, 423–426 (1991). https://doi.org/10.1007/BF01064414
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DOI: https://doi.org/10.1007/BF01064414