To explore the indoor air quality of Peking university,the concentrations of carbon monoxide(CO),carbon dioxide(CO 2) and non methane hydrocarbons (NMHC) in the indoor air were measured in different types of rooms of Peking university.

• 为了解北京大学园区室内空气质量，对园区不同类型房屋内CO、CO2与NMHC（非甲烷烃）浓度进行测定。