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目的了解南昌市公共场所室内空气细颗粒物浓度及其可能的影响因素。方法选取南昌市学校、卫生机构、办公场所、公共交通场所和餐厅共5类63家公共场所进行PM2.5浓度监测,同时现场调查禁烟政策、室内人数及吸烟人数等相关情况。结果公共场所室内PM2.5平均浓度为(93.28±65.42)μg/m3,学校、卫生机构、办公场所、公共交通场所及餐厅室内PM2.5平均浓度分别为(63.46±26.64)、(72.55±39.05)、(103.13±42.01)、(104.36±69.81)、(164.64±138.68)μg/m3。室内PM2.5浓度水平的主要影响因素为吸烟者密度、室外PM2.5浓度、禁烟政策及禁烟标志。结论南昌市公共场所室内PM2.5污染与吸烟相关。
Objective To understand the concentration of indoor air fine particles in public places in Nanchang and its possible influencing factors. Methods The concentrations of PM2.5 in 63 public places including 5 schools, health institutions, offices, public transport and restaurants in Nanchang were monitored. Meanwhile, the non-smoking policy, indoor population and number of smokers were investigated on the spot. Results The average concentration of PM2.5 in public places was (93.28 ± 65.42) μg / m3. The average indoor PM2.5 concentrations in schools, public health institutions, public places, public transportation and restaurant were (63.46 ± 26.64) and (72.55 ± 39.05), respectively ), (103.13 ± 42.01), (104.36 ± 69.81), (164.64 ± 138.68) μg / m3, respectively. The main factors affecting indoor PM2.5 concentration were density of smokers, outdoor PM2.5 concentration, no-smoking policy and no smoking sign. Conclusion Indoor PM2.5 pollution in Nanchang is related to smoking.