This white paper from the ASTM D37.08 Subcommittee (CDC Tobacco Products Laboratory authors) reviews and critiques aerosol collection methods for metals analysis in cannabis and nicotine electronic cannabinoid delivery systems (ECDS). It contains no primary occurrence measurements. It is catalogued here as methodological context for the vape-hardware routing.
Key numbers
No primary concentration data. Key methodological findings:
Aqueous impingers alone miss hydrophobic cannabis aerosol droplets; organic solvent (acetone or similar) is required to capture wax- and terpene-embedded metal particles. Glass and low-purity quartz materials must be avoided due to metal background contamination. High-purity PFA impingers are preferred. Priority monitoring targets for ECDS aerosols: arsenic, cadmium, lead, mercury, and nickel.
Methods (brief)
Literature review and expert consensus; ASTM D37.08 Subcommittee working document. No primary sampling.
Evidence fitness
Methods context for cannabis vape aerosol metal analysis. Not relevant to dried cannabis flower occurrence. Catalogued at vape-hardware routing.
Limitations
No primary data. Methods recommendations not yet formally adopted as an ASTM standard at time of publication.
Related evidence
Update history
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