室内空气中多环芳烃污染的测量和特征性研究

本文就室内空气中多环芳烃典型污染源－室内燃煤和室内吸烟排放的多环芳烃组成和含量进行了测定，并同室外大气（对照）中多环芳烃组成含量进行了对比，研究了室内环境不同污染源排放多环烃组成和含量的特征性，结果表明，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，而室朵烟草烟雾污染源的多环芳烃组成含量特征，则与室外煤型和交通型均有显著区别。

THE DETERMINATION AND STUDY ON CHARACTERISTIC OF POLYCYCLIC AROMATIC HYDROCARBONS IN INDOOR AIR

A field survey of indoor polycyclic aromatic hydrocarbons (PAHs) pollution was conducted in Tianjin, China. The PAHs analysis consists of Soxhlet extraction of PAHs from airborne particulates collected by glass fibre using dichloromethane, purified by silical gel column, and separation analysis by GC/MS. Residential coal burning and tobacco smoking have been considered to be major sources of indoor air PAHs pollution in China. The discussion was emphasized on the study on characteristic of PAHs in indoor air environment, including measurement of PAHs compositions and levels in indoor air, from indoor emission sources such as environmental tobacco smoke and residential coal burning smoke, and in atmospheric environment as a control; and study on characteristic ratios of PAHs emitted from above two indoor sources. The results were obtained through compared with the indoor-outdoor relations of characteristic ratios of PAHs. The conclusions of studies are the following; the characteristic ratios of PAHs from residential coal burning are similar to that of the industrial and domestic heating sourses (e. g. coal, gas, wood) in atmospheric environment; the characteristic ratios of PAHs emitted from indoor tobacco smoking source are significantly different from that of smoke sources generated from combustion of coal and oil in atmospheric environments. It is of the characteristic profiles of PAHs in indoor air.