公共场所空气质量分析评价方法

Quality Analysis and Evaluation of Indoor Air in Public Places

选取与大学生生活密切相关的公共场所如学校食堂、学校超市、电子阅览室、图书馆、乒乓球馆等作为监测对象,以氨气、苯、甲苯、二甲苯(主要是间二甲苯)、VOC等作为检测指标,进行场所内各气体分布规律的研究,结果发现,校园内各公共场所室内空气质量普遍良好,但也存在个别气体超标现象.烹饪操作窗口较多的食堂内空气质量较差,存在空气污染;学校超市空气质量较好;图书馆白天空气质量较好,人群密度最大的晚自习时间段内氨气、苯、甲苯超标,空气质量下降;乒乓球馆内存在氨气超标现象,但超标不严重;校内电子阅览室空气质量很好,相比之下校外网吧空气质量较差.

Public places closely related to college students such as school canteens, school supermarket, electronic reading room, library and table tennis hall were selected to monitor ammonia, benzene, toluene, xylene （m-xylene） and VOC, and to study these gas＇ distribution rule. It is found that indoor air quality is generally good in all public places in the campus, but there are also individual gas exceeded the standard. The air quality is poor in the canteen which has more operation windows and is good in school supermarket. The air quality in daytime is good in library, but at night when has the largest population density, ammonia, benzene and toluene exceeded the standard and the air quality is poor. Ammonia exceeded the standard in table tennis hall but that is not serious. The air quality is good in electronic reading room and much better than that in internet cafe out of campus.