深圳市室内大气多环芳烃的含量与组成

Concentration and characteristics of polycyclic aromatic hydrocarbons in indoor air of Shenzhen

利用PUF大气被动采样技术，对深圳市室内大气多环芳烃（PAHs）进行了为期6～8周的连续观测。结果表明，深圳市室内大气PAHs主要以气态化合物为主，尤以菲的含量为最高。室内大气PAHs的含量范围为44．2～395．4ng·m-3，平均123．6ng·m-3。不同场所的室内PAHs污染呈如下分布：ρ（工厂车间），ρ（家居客厅）≌ρ（办公环境），苯并[a]比毒性质最浓度则为：ρ（工厂车间）〉ρ（家居客厅）〉ρ（办公环境）。研究表明，工厂车间与家居办公环境中的PAHs来源不相尽同，认为办公环境中的PAHs污染主要来自户外的对流交换，而吸烟和厨房烹调是影响客厅PAHs含最的重要因素。总体来说，深圳地区室内大气PAHs污染较低，但工厂车间的PAHs污染及其健康危害值得关注。

In this study, PAHs in indoor air of Shenzhen was monitored by PUF passive sampler for a period of 6-8 weeks. Results indicated that PAHs in indoor air of Shenzhen was mainly of vapor phase compounds with phenanthrene dominant. Total PAHs concentrations ranged from 48.9 to 401.3 ng· m-3 （with an average 128.3 ng@m-3）, and descended in the order of factory workplace〉 family house≌office rooms, whereas the concentrations ofbenzo[a]pyrene equivalent descended in the order of factory workplace〉 family houses 〉 office rooms. There are distinct PAHs source between factory workplace and family house or office room, it is suggested that PAHs in office room may mainly come from the intrusion of outside source, smoking and domestic cuisine appear to play an important role in affecting PAHs concentration in drawing room. In summary, indoor PAHs concentrations in Shenzhen is relatively low, however, the pollution in factory workplace and its negative effect to health still need highly considered.