南京市部分居民室内PM2.5和PM1.0污染状况

Investigation of indoor PM2.5 and PM1.0 in some houses in Nanjing

目的调查居民室内PM2.5和PM1.0的污染水平和特征,为制定相关标准提供参考。方法随机选择南京市城区85户家庭,采用现场测定每户不同时段主卧室、客厅、厨房和室外PM2.5及PM1.0浓度,并记录检测时室内人员的行为与活动状态。结果室内PM2.5平均浓度为(0.080±0.033)mg/m3,上午时段平均浓度最高[(0.095±0.026)mg/m3];室内PM1.0平均浓度为(0.067±0.029)mg/m3,上午时段平均浓度最高[(0.081±0.027)mg/m3],室内PM1.0平均浓度低于室外,差异有统计学意义(P<0.05)。吸烟家庭室内PM2.5、PM1.0平均浓度均高于无人吸烟家庭(P<0.05),烹饪时室内PM1.0平均浓度高于未烹饪家庭(P<0.05)。结论本次调查的居民存在室内PM2.5污染,吸烟和烹饪对室内PM2.5和PM1.0浓度水平有影响。

Objective To investigate the indoor air concentration and characteristics of PM2.5 and PM1.0 in houses and to provide reference for the related standard. Methods A total of 85 households were randomly selected, the concentrations of PM2.5 and PM1.0 in the master bedroom, living room, kitchen and outdoor were measured by light scattering method, in different period of one day, and the indoor personnel＇s behavior was recorded also. Results Average concentration of PM2.5 in indoor air was （0.080±0.033） mg/m3, and in the morning it was the highest, the average value of PM1.0 was （0.067±0.029） mg/m3, the concentration of PM1.0 in indoor air was lower than outdoor （P〈0.05）.The average concentrations of PM2.5 and PM1.0 in indoor air of smoking households were significantly higher than these in no-smoking household （P〈0.05）.The concentrations of PM1.0 in cooking family was significantly higher than these in non-cooking family （P〈0.05）. Conclusion PM2.5 pollution exists in the investigated houses, indoor smoking and cooking have a certain impact on indoor PM2.5 and PM1.0 levels. Key words：Air pollution,indoor; PM2.5; PM1.0; Pollution status