Standard Test Method for Graphite Furnace Atomic Absorption Spectrometric Determination of Lead and Cadmium Extracted From Ceramic Foodware

Importancia y uso:

5.1 Toxic effects of lead and cadmium are well known and release of these elements from foodware is regulated by many countries. Regulatory decisions are based on results of 24-h leaching with acetic acid because results of this test method are precise and accurate and this test method is easy to use. Concentrations of lead and cadmium extracted by food may be different from results of this method, however, because acidity, contact time, and temperature typical of consumer use are different from those of this test method.

5.2 This test method is intended for application only in contamination-free settings and should be performed by well-qualified technical personnel. It is recognized that it is not a practical or appropriate method to use in a nonlaboratory environment for quality assurance and control of the ceramic process. Users are advised to use Test Method C738 (flame AAS) for purposes of the latter.

Subcomité:

C21.03

Volúmen:

15.02

Número ICS:

81.060.99 (Other standards related to ceramics), 81.060.20 (Ceramic products)

Palabras clave:

cadmium release; ceramicware; foodware; graphite furnace atomic absorption spectrometry; lead release;