Waring Michael S, Siegel Jeffrey A
Department of Civil, Architectural, and Environmental Engineering, The University of Texas at Austin, Austin, Texas 78712, USA.
J Expo Sci Environ Epidemiol. 2007 May;17(3):260-8. doi: 10.1038/sj.jes.7500513. Epub 2006 Jun 28.
This study assessed differences in the indoor air quality and occupancy levels in seventeen bars due to a city-wide smoking ban that took effect on September 1, 2005 in Austin, Texas, USA. We measured the following in each venue before and after the smoking ban: mean number of occupants, mean number of lit cigarettes, temperature, relative humidity, room volume, and PM(2.5), CO, and CO(2) concentrations. Additionally, VOC measurements were conducted at three of the venues. There was not a statistically significant change in occupancy, but the best estimate PM(2.5) concentrations in the venues decreased 71-99%, a significant reduction in all venues, relative to the pre-ban levels; CO concentrations decreased significantly in all but one venue; and concentrations of VOCs known to be emitted from cigarettes decreased to below the detection limit for all but two common compounds. These results suggest that the smoking ban has effectively improved indoor air quality in Austin bars without an associated decrease in occupancy.
本研究评估了2005年9月1日在美国得克萨斯州奥斯汀市生效的全市范围内禁烟令对17家酒吧室内空气质量和 occupancy levels的影响。我们在禁烟令实施前后分别测量了每个场所的以下指标：occupants的平均数量、点燃香烟的平均数量、温度、相对湿度、房间体积以及PM(2.5)、CO和CO(2)浓度。此外，还在其中三个场所进行了VOC测量。occupancy没有统计学上的显著变化，但各场所中PM(2.5)浓度的最佳估计值相对于禁令实施前的水平下降了71%至99%，所有场所均有显著降低；除一个场所外，所有场所的CO浓度均显著下降；除两种常见化合物外，已知由香烟排放的VOCs浓度降至检测限以下。这些结果表明，禁烟令有效地改善了奥斯汀酒吧的室内空气质量，且未导致occupancy下降。
