室内颗粒物与二手烟：暴露场景模拟
Indoor particulate matter and secondhand smoke: simulation of an exposure scenario.
作者信息
Protano C, Cattaruzza M S, Osborn J F, Vitali M
机构信息
Department of Public Health and Infectious Diseases, Sapienza University of Rome, Italy.
出版信息
Ann Ig. 2014 Mar-Apr;26(2):186-9. doi: 10.7416/ai.2014.1975.
BACKGROUND
To evaluate secondhand smoke (SHS) contribution on indoor Particulate Matter (PM) concentrations due to a single smoked cigarette in a real exposure scenario.
METHODS
Total Suspended Particles (TSP) and sizes ≤10 (PM(10)), ≤4 (PM(4)), ≤2.5 (PM(2.5)), and ≤1 μm (PM(1)) levels were measured before, during and after smoking in an enclosed smoke-free environment. The measurement was stopped 30 minutes after extinguishing the cigarette, to focus the monitoring just on SHS.
RESULTS
PM(1) concentrations dramatically increased during and 30 minutes after smoking (mean values: 21.1, 1544.0 and 279.0 μg/m3 before, during and after, respectively), while the other PM fractions remained almost unchanged.
CONCLUSIONS
This experiment implies that smoking even one cigarette produces important indoor air pollution which may considerably increase individual exposure to ultrafine particles, and, consequently, pose a serious threat to health.
背景
评估在实际暴露场景中，一支香烟产生的二手烟对室内颗粒物（PM）浓度的影响。
方法
在封闭的无烟环境中，于吸烟前、吸烟期间和吸烟后测量总悬浮颗粒物（TSP）以及粒径≤10（PM₁₀）、≤4（PM₄）、≤2.5（PM₂.₅）和≤1μm（PM₁）的颗粒物水平。香烟熄灭后30分钟停止测量，以便仅关注二手烟。
结果
吸烟期间及吸烟后30分钟，PM₁浓度显著增加（平均值：吸烟前、吸烟期间和吸烟后分别为21.1、1544.0和279.0μg/m³），而其他PM组分几乎保持不变。
结论
该实验表明，即使只吸一支烟也会造成严重的室内空气污染，这可能会大幅增加个体对超细颗粒物的暴露，从而对健康构成严重威胁。
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