Inorganic Particles in Cigars and Cigar Smoke

See allHide authors and affiliations

Science  05 Nov 1971:
Vol. 174, Issue 4009, pp. 585-587
DOI: 10.1126/science.174.4009.585


A number of crystalline and optically isotopic inorganic materials are used in the manufacture of reconstituted tobacco sheets. These sheets, used primarily in inexpensive cigars, often contain diatomaceous earth, which exists in part in the silica mineral form cristobalite, a known fibrogen. Diatom fragments with this crystalline form have been observed in the main smoke stream of cigars made with these tobacco sheets.