斯里兰卡部分公共场所二手烟导致的室内细颗粒物（PM2.5）污染暴露情况。
Indoor fine particle (PM2.5) pollution exposure due to secondhand smoke in selected public places of Sri Lanka.
机构信息
Evaluation and Research Unit, National Institute of Health Sciences, Ministry of Health, Kalutara, Sri Lanka.
出版信息
Am J Ind Med. 2012 Dec;55(12):1129-36. doi: 10.1002/ajim.22040. Epub 2012 Apr 2.
BACKGROUND
Secondhand smoke accounts for a considerable proportion of deaths due to tobacco smoke. Although the existing laws ban indoor smoking in public places in Sri Lanka, the level of compliance is unknown.
METHODS
Fine particulate matter (PM(2.5)) levels in 20 public places in Colombo, Sri Lanka were measured by a PM monitor (Model AM510-SIDEPAK Personal Aerosol Monitor). Different types of businesses (restaurants, bars, cafés, and entertainment venues) were selected by purposive sampling. Only the places where smoking was permitted were considered.
RESULTS
The average indoor PM(2.5) ranged from 33 to 299 µg/m(3). The average outdoor PM(2.5) ranged from 18 to 83 µg/m(3). The indoor to outdoor PM(2.5) ratio ranged from 1.05 to 14.93. In all venues, indoor PM(2.5) levels were higher than the Sri Lankan ambient PM(2.5) standard of 50 µg/m(3). All indoor locations had higher PM(2.5) levels as compared to their immediate outdoor surroundings.
CONCLUSION
The study highlights the importance of improving ventilation and enforcing laws to stop smoking in public places.
背景
二手烟占因烟草烟雾而死亡的人数的相当大的比例。尽管斯里兰卡现有的法律禁止在公共场所室内吸烟，但遵守法律的程度尚不清楚。
方法
使用 PM 监测仪（Model AM510-SIDEPAK 个人气溶胶监测器）测量了斯里兰卡科伦坡 20 个公共场所的细颗粒物（PM2.5）水平。通过目的抽样选择了不同类型的企业（餐馆、酒吧、咖啡馆和娱乐场所）。只考虑允许吸烟的地方。
结果
室内 PM2.5 的平均浓度范围为 33 至 299 µg/m3。室外 PM2.5 的平均浓度范围为 18 至 83 µg/m3。室内到室外 PM2.5 的比值范围为 1.05 至 14.93。在所有场所，室内 PM2.5 水平均高于斯里兰卡 50 µg/m3 的环境 PM2.5 标准。所有室内地点的 PM2.5 水平均高于其周围室外环境。
结论
该研究强调了改善通风和执行公共场所禁烟法律的重要性。
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