办公室内可吸入颗粒物污染初析

Preliminary Study on Indoor Inhalable Particulates Pollution in Office

测定了普通办公室内空气中可吸入颗粒物的质量浓度,分析了粒径分布,并考察了吸烟对可吸入颗粒物污染的影响。研究表明,办公室内可吸入颗粒以细颗粒为主,PM<7.0μm的颗粒物占95％以上,PM<1.1μm的颗粒物占50～70％。吸烟和室外大气可吸入颗粒物的污染是普通办公室内空气中可吸入颗粒物污染的重要来源。

Based on determination of inhalable particulates in indoor air of a common office, the particulates size distribution have been analyzed, and the contribution of cigarette smoke on particulates was detected. It was found that fine particles were dominated in indoor air, among which more than 95% was smaller than 7.0 μm, and about 50-70% was smaller than 11μm, The effects of cigarette smoke and polluted outdoor ambient air, as two important sources of indoor inhalable particulars on size distribution have also been discussed.