柳州市公共场所室内PM_(2.5)和PM_(10)污染及其与室外污染的关系  

Indoor PM_(2.5) and PM_(10) pollution and their relationship with outdoor pollution in Liuzhou City

作　　者：黄冬娟 顾小利 潘榕[1] 谢昌平[1] 叶绍燕 HUANG Dong-juan;GU Xiao-li;PAN Rong;XIE Chang-ping;YE Shao-yan(Liuzhou Center for Discase Control and Prevention,Liuzhou,545007,China)

机构地区：[1]柳州市疾病预防控制中心,柳州545007

出　　处：《环境卫生学杂志》2022年第7期505-509,共5页JOURNAL OF ENVIRONMENTAL HYGIENE

基　　金：广西壮族自治区卫生健康委员会自筹经费科研课题(Z20200949)。

摘　　要：目的了解柳州市公共场所室内PM_(2.5)与PM_(10)污染状况,分析其室内外PM_(2.5)与PM_(10)污染的相关性。方法于2020年夏季、冬季采用分层随机抽样方法抽取18家住宿场所、8家沐浴场所、6家游泳场所、16家美容美发场所、2家候车场所进行监测.采用光散射法同时测定室内、外PM_(2.5)与PM_(10)质量浓度,同时记录现场采样时监测点的通风状态及特殊情况。结果柳州市公共场所室内PM_(2.5)质量浓度中位数M(P_(25),P_(75))为25(18,37)μg/m^(3),范围为(5~168)μg/m^(3),合格率为92.9%;PM_(10)质量浓度中位数M(P_(25),P_(75))为51(36~79)μg/m^(3),范围为(10~374)μg/m^(3),合格率为92.9%。公共场所冬季室内PM_(2.5)和PM_(10)质量浓度明显高于夏季,差异有统计学意义。不同类型的公共场所室内PM_(2.5)、PM_(10)的质量浓度存在差异。室内PM_(2.5)质量浓度与PM_(10)存在线性相关,回归方程:y=2.083x-0.985,R=0.997;室内PM_(2.5)浓度低于同时期室外实测水平,呈高度正相关(R=0.821)。室内PM_(10)质量浓度与室外水平呈正相关(R=0.790)。PM_(2.5)和PM_(10)室内、外的I/O比值分别为1.02和1.01。结论柳州市公共场所室内空气PM_(2.5)与PM_(10)状况良好。公共场所室内具有良好的通风换气,室内PM_(2.5)、PM_(10)污染主要受室外污染的影响。Objective To investigate the pollution status of indoor PM_(2.5) and PM_(10) at public places in Liuzhou,China and to analyze their relationship with outdoor pollution.Methods In the summer and winter of 2020,the stratified random sampling method were performed to select 18 accommodation places,8 bathing places,6 swimming places,16 beauty salons,and 2 waiting places for monitoring.Indoor and outdoor PM_(2.5) and PM_(10) mass concentration were simultaneously measured by light scattering method.The ventilation status and special conditions of the monitoring points during the on-site sampling were recorded at the same time.Results The median mass concentration M(P_(25),P_(75))of indoor PM_(2.5) in liuzhou public places was 25(18-37)μg/m^(3),with a range of(5-168)μg/m^(3),and the qualified rate was 92.9%.The median mass concentration M(P_(25),P_(75))of PM_(10) was 51(36-79)μg/m^(3),with a range of(10-374)μg/m^(3),and the qualified rate was 92.9%.The indoor PM_(2.5)and PM_(10) mass concentrations in public places in winter were significantly higher than those in summer,with a statistically significant difference.The mass concentrations of indoor PM_(2.5)and PM_(10) varied in different types of public places.There was a linear relationship between the mass concentration of indoor PM_(2.5) and PM_(10),with a regression equation of y=2.083x-0.985,R=0.997;The mass concentration of indoor PM_(2.5) was lower than that of outdoor PM_(2.5),and existed a highly positive correlation between them(R=0.821).There was a positive correlation of PM_(10) mass concentration between indoor and outdoor(R=0.790).The indoor and outdoor I/O ratios of PM_(2.5) and PM_(10) were 1.02 and 1.01 respectively.Conclusion There are good conditions of indoor air PM_(2.5) and PM_(10) in public places in Liuzhou.Public places have good indoor ventilation,and indoor PM_(2.5) and PM_(10) pollution is mainly affected by outdoor pollution.

关 键 词：公共场所 细颗粒物(PM_(2.5)) 可吸入颗粒物(PM_(10)) 室内 室外 

分 类 号：R122.2[医药卫生—环境卫生学]