Environmental Tobacco Smoke as a Source of Polycyclic Aromatic Hydrocarbons in Settled Household Dust
Environmental Tobacco Smoke as a Source of Polycyclic Aromatic Hydrocarbons in Settled Household Dust
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DOI：
10.1021/es300267g
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发表时间：
2012-04-03
影响因子：
11.4
通讯作者：
Matt, Georg E.
中科院分区：
文献类型：
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作者：
Hoh, Eunha;Hunt, Richard N.;Matt, Georg E.
环境烟草烟雾是室内空气污染的主要贡献者。在主动吸烟停止后的很长一段时间内，灰尘和表面可能仍然受到污染(称为“第三手烟”)。多环芳烃(PAHs)是已知的烟草烟雾的致癌成分，存在于室内粉尘(SHD)中。我们调查了烟草烟雾是否是SHD中多环芳烃的来源。从南加州市区的132户家庭收集了房屋灰尘。吸烟者住宅的PAHs总量显著高于非吸烟者住宅(按浓度计算：990 ng/g vs756 ng/g，p=0.025；按负荷计算：1650 ng/m(2)vs796 ng/m(2)，p=0.012)。我们还发现，在自闭症患者中，尼古丁与总多环芳烃水平之间存在显著的线性相关(浓度，R2=0.105；负荷量，R2=0.385)。在吸烟者家中，每平方米收集的粉尘(g/m(2))明显更大，可能会不一致地稀释SHD中的PAR浓度。因此，粉尘多环芳烃负荷(ng PAH/m(2))是反映SHD中多环芳烃含量的较好指标。同一家庭卧室和起居室的室内粉尘浓度之间存在显著的相关性(R-2=0.468，p<；0.001)，表明多环芳烃是通过烟草烟雾在整个家庭中分布的。总之，烟草烟雾是SHD中多环芳烃的一个来源，而烟草烟雾产生的多环芳烃是三手烟的一个组成部分。
Environmental tobacco smoke is a major contributor to indoor air pollution. Dust and surfaces may remain contaminated long after active smoking has ceased (called 'thirdhand' smoke). Polycyclic aromatic hydrocarbons (PAHs) are known carcinogenic components of tobacco smoke found in settled house dust (SHD). We investigated whether tobacco smoke is a source of PAHs in SHD. House dust was collected from 132 homes in urban areas of Southern California. Total PAHs were significantly higher in smoker homes than nonsmoker homes (by concentration: 990 ng/g vs 756 ng/g, p = 0.025; by loading: 1650 ng/m(2) vs 796 ng/m(2), p = 0.012). We also found significant linear correlations between nicotine and total PAH levels in SHD (concentration, R-2 = 0.105; loading, R-2 = 0.385). Dust collected per square meter (g/m(2)) was significantly greater in smoker homes and might dilute PAR concentration in SHD inconsistently. Therefore, dust PAH loading (ng PAH/m(2)) is a better indicator of PAH content in SHD. House dust FAR loadings in the bedroom and living room in the same home were significantly correlated (R-2 = 0.468, p < 0.001) suggesting PAHs are distributed by tobacco smoke throughout a home. In conclusion, tobacco smoke is a source of PAHs in SHD, and tobacco smoke generated PAHs are a component of thirdhand smoke.