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本实验选择了天津市４类典型室内环境和２处室外对照点，共１９个采样点。现场采样测定了１０种ＰＡＨｓ组成含量。结果显示：室内燃煤和室内吸烟是室内环境中多环芳烃排放的主要污染源。同作为对照的室外大气中多环芳烃组成和含量进行了对比，研究了室内环境不同污染源排放多环芳烃组成和含量的特征性。得出了室内燃煤污染同燃煤型室外大气源排放多环芳烃具有相似组成含量特征，而室内烟草烟雾污染源的多环芳烃组成含量特征则与室外燃煤型和燃油型均有显著区别。
The experiment chose four typical indoor environment and two outdoor control points in Tianjin, a total of 19 sampling points. Field sampling determined the content of 10 PAHs. The results show that indoor coal combustion and indoor smoking are the main sources of PAHs emissions in the indoor environment. Compared with the composition and content of polycyclic aromatic hydrocarbons (PAHs) in outdoor atmosphere, the characteristics and composition of polycyclic aromatic hydrocarbons (PAHs) released from different sources in indoor environment were studied. It is concluded that indoor coal combustion pollution has similar compositional content with polycyclic aromatic hydrocarbons (PAHs) emitted by coal-fired outdoor air sources, while indoor polycyclic aromatic hydrocarbons (PAHs) content of indoor tobacco smoke pollution sources are significantly different from those of outdoor coal combustion and fuel oil .