PM2.5 exposure close to marijuana smoking and vaping: A case study in residential indoor and outdoor settings
| Autor: | Wayne Ott, Kai-Chung Cheng, Yifang Zhu, Lance Wallace, Lynn M. Hildemann |
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| Rok vydání: | 2022 |
| Předmět: |
Environmental Engineering
Current smoker Fine particulate Marijuana Smoking complex mixtures Exposure Substance Misuse Environmental health Air Pollution Tobacco Environmental Chemistry 2.2 Factors relating to the physical environment Indoor Particle Size Aetiology Waste Management and Disposal Aerosol Cannabis Air Pollutants Tobacco Smoke and Health Vaping Prevention Minimum distance Smoking Pollution Marijuana Marijuana smoking Good Health and Well Being Environmental science Particulate Matter Drug Abuse (NIDA only) Environmental Sciences Environmental Monitoring |
| Popis: | We conducted 35 experiments for spatial measurement of marijuana aerosols in a current smoker's residential spaces. Fine particulate matter (PM2.5) concentrations were measured every second at 1, 2, and 3m horizontal distances from the smoker who performed prescribed 5-min smoking and vaping activities. In each experiment, five SidePak monitors measured PM2.5 concentrations at five different angles facing the front of the smoker, representing the worst-case exposures. We studied the effect of distance from the smoker for two marijuana sources - smoking a marijuana cigarette, or joint, and vaping a liquid-cartridge vaping pen. Experiments were conducted in the family room indoors and in the backyard outdoors where the smoker normally consumes marijuana. Indoor marijuana vaping had higher average exposures (5-min PM2.5) at 1m distance than indoor marijuana smoking, but the levels from indoor vaping decreased more rapidly with distance (e.g., 77% reduction for vaping versus 33% for smoking from 1 to 2m). Smoking and vaping in the outdoor environment reduce the average exposures down to 20% indoors at 1m). Plotting the frequency of exceedance versus distance could offer additional guidance for a recommended minimum distance from a marijuana source. |
| Databáze: | OpenAIRE |
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