江西省不同类型公共场所室内PM_(10)与PM_(2.5)污染情况及相关性

Pollution and correlation of indoor PM_(10)and PM_(2.5)in different types of public places in Jiangxi Province

目的了解江西省不同类型公共场所室内PM_(10)与PM_(2.5)污染水平及相关性,为制定防控措施提供科学依据。方法采用分层随机抽样方法,于2019年和2020年分别对江西省内的宾馆/酒店、理发店、美容店和候车室等4类230家公共场所进行采样,监测室内空气PM_(10)、PM_(2.5)的浓度,分析其相关性。结果江西省不同类型公共场所室内PM_(10)、PM_(2.5)浓度中位数分别为98μg/m^(3)、63μg/m^(3),范围为76~127μg/m^(3)、47~88μg/m^(3)。不同类型、不同地区和不同季度间的公共场所室内PM_(10)与PM_(2.5)浓度比较差异均有统计学意义(均P<0.05)。公共场所室内PM_(2.5)对PM_(10)的贡献率为45%(33%~57%),室内PM_(2.5)与PM_(10)的浓度存在正相关性。结论江西省不同类型公共场所室内PM_(10)和PM_(2.5)存在不同程度的污染,应加强对重点公共场所室内污染物的监测。

Objective To investigate the pollution status of indoor PM_(10)and PM_(2.5)in different types of public places in Jiangxi Province and to analyze their correlation,so as to provide scientific basis for formulating prevention and control measures.Methods Stratified random sampling method was applied to detect PM_(10)and PM_(2.5)concentrations from indoor air and analyzed the correlation.Samples were taken from 230 public places in 4 categories,including hotels,barber shops,beauty salons and waiting rooms,in Jiangxi Province in 2019 and 2020,respectively.Results The median indoor PM_(10)and PM_(2.5)concentrations in different types of public places in Jiangxi Province were 98μg/m^(3) and 63μg/m^(3),respectively,andranged from 76μg/m^(3) to 127μg/m^(3) and 47μg/m^(3) to 88μg/m^(3).There weresignificant differences in indoor PM_(2.5)and PM_(10)concentrations in different types,regions and quarters of public places(all P<0.05).The contribution rate of PM_(2.5)and PM_(10)in public places was 45%(33%~57%).There was a positive correlation between indoor PM_(2.5)and PM_(10)concentrations.Conclusion Indoor PM_(10)and PM_(2.5)pollution in different types of public places in Jiangxi Province are of different degrees,so the monitoring of indoor pollutants in key public places should be strengthened.