Impacts of electronic cigarettes usage on air quality of vape shops and their nearby areas.
Impacts of electronic cigarettes usage on air quality of vape shops and their nearby areas.
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DOI：
10.1016/j.scitotenv.2020.143423
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发表时间：
2021-03-15
期刊：
影响因子：
--
通讯作者：
Zhu Y
中科院分区：
文献类型：
--
作者：
Li L;Nguyen C;Lin Y;Guo Y;Fadel NA;Zhu Y
随着电子烟(e-cig)市场的快速增长，专门销售电子烟的电子烟商店越来越多。在电子烟商店使用电子烟是室内颗粒物的主要来源，这些颗粒物可能会在多单元环境中传输到附近的室内空间。在这项研究中，招募了南加州6对Vape商店和邻近的商家，对2017年2月至2019年10月期间的颗粒物污染物进行实时测量。研究车间的SD颗粒物数浓度和PM2.5平均浓度分别为2.8×10~4(2.3×10~4)个/cm~3和2 76(5 46)μg/m~3，明显高于邻近商户和室外区域。此外，对6对和另外3对进行了24小时时间加权平均(TWA)尼古丁采样。所有被调查的电子烟商店和邻近商铺的空气中均检出尼古丁，其平均浓度(SD)分别为2.59(1.02)和0.17(0.13)μg/m~3。在VAPE商店内，稀释校正的蒸发密度(每小时/100立方米)是颗粒浓度的有力预测因子，而尼古丁浓度高度依赖于空气交换率(AER)。在六对研究中，五家电子烟商店的PNC和两家电子烟商店的PM2.5与邻近企业的PNC显著相关。当电子烟商店的门关闭时，这种相关性更强。当门打开时，环境电子蒸发(EEV)气雾剂，特别是更小的颗粒，可以从电子烟商店传输到室外环境。总体而言，电子烟在电子烟商店的使用会影响其自身和附近的空气质量，这引发了人们对周围环境中暴露于EEV气雾剂的风险的担忧。
With the rapid growth of the electronic cigarette (e-cig) market, there is an increasing number of vape shops that exclusively sell e-cigs. The use of e-cigs in the vape shop is a primary source of indoor particles, which might transport to its nearby indoor spaces in the multiunit setting. In this study, six pairs of vape shops and neighboring businesses in Southern California were recruited for real-time measurements of particulate pollutants between February 2017 and October 2019. The mean (SD) particle number concentration (PNC) and PM2.5 concentration in the studied vape shops were 2.8 × 104 (2.3 × 104) particles/cm3 and 276 (546) μg/m3, which were substantially higher than those in neighboring businesses and outdoor areas. In addition, 24-h time-weighted average (TWA) nicotine sampling was conducted in the six pairs and three additional pairs. Nicotine was detected in the air of all the studied vape shops and neighboring businesses, in which the mean (SD) concentration was 2.59 (1.02) and 0.17 (0.13) μg/m3, respectively. Inside vape shops, the dilution-corrected vaping density (puffs/h/100 m3) is a strong predictor of the particle concentration, and nicotine concentration highly depends on the air exchange rate (AER). Out of the six studied pairs, PNCs in five vape shops and PM2.5 in two vape shops were significantly correlated with those in their neighboring businesses. This correlation was stronger when the door of the vape shop was closed. When the door was open, environmental electronic vaping (EEV) aerosols, especially smaller particles, could transport from the vape shop to the outdoor environment. Overall, e-cig usage in the vape shop impacts both its own and nearby air quality, raising concerns regarding the risk of exposure to EEV aerosols in the surrounding environments.
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DOI：
10.3390/ijerph14020145
发表时间：
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影响因子：
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