Abstract Title:

Effect of microwave heating on leaching of lead from old ceramic dinnerware.

Abstract Source:

Sci Total Environ. 1996 Apr 5;182(1-3):187-91. PMID: 8854945

Abstract Author(s):

R W Sheets, S L Turpen, P Hill

Article Affiliation:

Department of Chemistry, Southwest Missouri State University, Springfield 65804, USA.


When samples of pre-1950s U.S.-made ceramic dinnerware, purchased in antique shops and flea markets, were filled with 4% acetic acid or 0.5% citric acid and heated in a microwave oven for 2-5 min, lead was leached in amounts of up to 5 mg per dish. Concentrations of lead in the leachates were not significantly correlated with, and could not be predicted from, concentrations in leachates measured during 24-h room temperature acid leaching tests. Unsafe lead concentrations (>3 microg/ ml) were found in microwave leachates of dishes with uranium-containing glazes, with copper-containing glazes, and with floral over-the-glaze decals. This evidence suggests that use of such dishes to microwave common foods could result in the ingestion of dangerously large amounts of lead.

Study Type : Commentary
Additional Links
Anti Therapeutic Actions : Microwave Cooking : CK(87) : AC(34)

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