北大园区室内挥发性有机物(VOCs)的研究

The Research of Volatile Organic Compounds (VOCs) in the Buildings of Peking University Campus

１９９７年３～５月，对北京大学校园区内多处师生住所及公共场所室内空气中的挥发性有机物（ＶＯＣｓ）进行了调查研究。结果表明，大多数房屋内总ＶＯＣｓ浓度在２２０～２０００μｇ／ｍ３范围内；通风条件、季节变化、人为活动对室内ＶＯＣｓ浓度水平起着重要影响。室外空气质量也直接影响着室内ＶＯＣｓ浓度高低：室内多种芳香烃和烷烃主要来自于室外汽车尾气的排放，其贡献率为７６％～９２％。

Concentrations of total volatile organic compounds (TVOCs) and about 60 individual volatile organic compounds (VOCs) were measured in several Peking University buildings of two types,i.e. living room and public house,from March to May,1997.It is shown that concentrations of indoor TVOCs in most buildings range from 220～2 000 μg/m 3, and they are affected mainly by ventilation,seasonal variation,and human activities.Outdoor air quality also plays an important role in concentrations of indoor VOCs.Many kinds of indoor aromatic and aliphatic hydrocarbons derive from the emissions of motor vehicle exhausts,with the contribution rates ranging from 76%～92%.