ASTM D7771 – Standard Test Method for Determination of Benzo-α-Pyrene (BaP) Content in Carbon Black
Significance and Use
5.1 This test procedure is used to determine the concentration of BaP extracted from carbon black by the means of a Soxhlet extraction apparatus with toluene.
1.1 This test method covers the qualitative and quantitative determination of only benzo-α-pyrene (BaP), a specific polycyclic aromatic hydrocarbon (PAH), on carbon black. The procedure involves Soxhlet extraction with toluene and analysis by gas chromatography with mass spectrometry (GC/MS). This method is not intended to test for U.S. Food and Drug Administration (FDA 21 CFR 178.3297) compliance of carbon blacks used for indirect food contact applications.
1.2 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.