论文部分内容阅读
目的了解广州市主要的公共场所和工作场所室内PM2.5浓度水平和影响因素,为制定相关卫生标准及政策法规提供科学依据。方法通过分层抽样方法抽取10类工作场所及公共场所,使用AM510便携式防爆智能数字粉尘仪进行30min室内空气PM2.5的浓度检测,通过单因素以及多重对应分析等方法对室内PM2.5浓度的影响因素进行分析。结果全市各类场所室内PM2.5平均浓度为61.17μg/m3,其中长途汽车站、火车站等交通场所以及酒店、宾馆等食宿场所浓度较高,均值分别为98.80和76.59μg/m3;单因素分析显示,与中心城区相比,县级市场所的PM2.5浓度水平相对较低(Dunnett-t=-0.19,P=0.003)。闻到油烟味或发现有人正在吸烟的场所的PM2.5浓度水平均高于未发现的(t=3.03,P=0.003;t=2.19,P=0.031);多重对应分析结果显示,室内PM2.5浓度高多与食宿或者交通场所、无禁烟标识、吸烟行为、闻到油烟有关。结论广州市各类场所室内PM2.5浓度水平较高,在酒家、饭店等餐饮场所以及长途汽车站等交通站点污染较严重,应加强对这类场所的监管,保护公众健康。
Objective To understand the indoor PM2.5 concentration and its influencing factors in Guangzhou’s major public places and workplaces, and to provide a scientific basis for formulating relevant health standards and policies and regulations. Methods Ten types of workplace and public places were sampled by stratified sampling method. AM510 portable explosion-proof intelligent digital dust analyzer was used to detect the concentration of PM2.5 in indoor air for 30 minutes. By single factor and multiple correspondence analysis, the indoor PM2.5 concentration Influencing factors were analyzed. Results The average concentration of indoor PM2.5 was 61.17μg / m3 in all kinds of venues in the city, of which the bus and train stations and other transportation places as well as hotels and guesthouses had higher concentrations with the average values of 98.80 and 76.59μg / m3 respectively; Factor analysis showed that PM2.5 concentrations in county-level markets were relatively low compared with downtown (Dunnett-t = -0.19, P = 0.003). The levels of PM2.5 in smelly smoke or smoking spot were higher than those of non-detected PM2.5 (t = 3.03, P = 0.003; t = 2.19, P = 0.031). Multiple correspondence analysis showed PM2.5 in the room. 5 high concentration and accommodation or traffic, no smoking signs, smoking behavior, smelly fumes. Conclusions Indoor PM2.5 concentrations in various venues in Guangzhou are high, causing more serious pollution at such transport sites as restaurants, restaurants and other bus terminals as well as bus stations. Supervision and control of these venues should be strengthened to protect public health.