Ozone breaks down THC transferred on surface areas from thirdhand marijuana smoke

Second- and thirdhand tobacco smoke have actually gotten great deals of attention, however much less is learnt about the substances transferred on surface areas from marijuana smoke. Now, scientists reporting in AIR CONDITIONING’ Ecological Science & & Innovation have actually found that ozone– an element of outside and indoor air– can respond with tetrahydrocannabinol (THC), the psychedelic part of marijuana, on glass or cotton surface areas to produce brand-new substances, which they defined for the very first time.

Cigarette smoking produces reactive chemicals that stay in the air (so-called previously owned smoke) or deposit onto surface areas, consisting of walls, windows, clothes and upholstery (thirdhand smoke). Unlike the previously owned range, thirdhand smoke remains long after an individual stops smoking cigarettes. Nicotine is semi-volatile and responds with other chemicals on surface areas, producing brand-new substances that, if unstable, can likewise end up being air-borne. Due to the fact that marijuana smoke is chemically unique from tobacco smoke, Aaron Wylie and Jonathan Abbatt wished to define the substances formed when THC, by itself or in marijuana smoke, on surface areas responds with ozone in the air.

The scientists layered glass and cotton fabric, to imitate windows and clothes, with a THC option. Then, they exposed the surface areas to concentrations of ozone that might exist in indoor air. In their analysis, they discovered that in time, the quantity of THC on glass and cotton reduced, while the amounts of 3 THC oxidation items increased. In other experiments, the group utilized a smoking cigarettes device to deposit marijuana smoke onto cotton. Upon direct exposure to ozone, the exact same 3 substances formed at approximately the exact same rate as observed for the THC-coated fabric. Due to the fact that of the low volatility of THC and its oxidation items, the substances are not likely to be released to the air where they might be inhaled in as big quantities as nicotine, the scientists state. They state that someone might still be exposed to THC and its derivatives, whose health impacts are unidentified, if they, for instance, lick their fingers after touching a surface area infected by marijuana smoke.


The authors acknowledge financing from the Chemistry of Indoor Environments program at the Alfred P. Sloan Foundation.

The abstract that accompanies this paper can be seen here.

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