Third-hand Smoke (IMAGE)

DOE/Lawrence Berkeley National Laboratory

Third-hand Smoke

Caption

In tests at Berkeley Lab of celluose surfaces contaminated with nicotine residues from third-hand smoke, levels of newly formed TSNAs rose 10 times following a three hour exposure to nitrous acid. TSNAs are potent carcinogens.

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Photo by Roy Kaltschmidt, Berkeley Lab Public Affairs

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