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目的探讨公共场所室内空气质量与嗜肺军团菌气溶胶浓度关系。方法 2011—2014年,选取北京市丰台区、江苏省南京市和常州市、广东省深圳市的公共场所,检测室内空气温度、湿度、风速、PM10和PM2.5。采集公共场所气溶胶样本,荧光定量聚合酶链反应(PCR)法检测嗜肺军团菌污染水平。结果公共场所室内空气温度、湿度、风速、PM10和PM2.5的合格率分别为79.4%、88.2%、75.0%、76.9%和62.1%。嗜肺军团菌气溶胶浓度均值为2.15×105copies/m L,浓度范围8.75×102~1.79×106copies/m L。嗜肺军团菌气溶胶浓度与室内空气温度(P=0.002)、湿度(P=0.038)、PM10(P=0.002)和PM2.5(P=0.000)相关性有统计学意义。结论公共场所室内空气质量与嗜肺军团菌气溶胶浓度间存在相关性。
Objective To investigate the relationship between indoor air quality and aerosol concentration of Legionella pneumophila in public places. Methods From 2011 to 2014, public places such as Fengtai District in Beijing, Nanjing and Changzhou in Jiangsu Province and Shenzhen in Guangdong Province were selected to test indoor air temperature, humidity, wind speed, PM10 and PM2.5. Aerosol samples were collected from public places and the level of Legionella pneumophila contamination was detected by fluorescence quantitative polymerase chain reaction (PCR). Results The qualified rates of indoor air temperature, humidity, wind speed and PM10 and PM2.5 in public places were 79.4%, 88.2%, 75.0%, 76.9% and 62.1% respectively. Legionella pneumophila aerosol concentration average 2.15 × 105copies / m L, the concentration range 8.75 × 102 ~ 1.79 × 106copies / m L. Legionella pneumophila aerosol concentration and indoor air temperature (P = 0.002), humidity (P = 0.038), PM10 (P = 0.002) and PM2.5 (P = 0.000) correlation was statistically significant. Conclusion There is a correlation between indoor air quality in public places and Legionella pneumophila aerosol concentration.