Dall'Osto Manuel, Harrison Roy M, Charpantidou E, Loupa G, Rapsomanikis S
Division of Environmental Health and Risk Management, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom.
Sci Total Environ. 2007 Oct 1;384(1-3):120-33. doi: 10.1016/j.scitotenv.2007.05.041. Epub 2007 Jul 12.
An Aerosol Time-of-Flight Mass Spectrometer (ATOFMS; TSI 3800) was deployed to Athens (Greece) during August 2003. The instrument provides information on a polydisperse aerosol, acquiring precise aerodynamic diameter (+/-1%) within the range 0.3 to 3 mum and individual particle positive and negative mass spectral data in real time. Sampling was carried out indoors and outdoors at an office in a building on a minor road in the city centre and various outdoor and indoor sources were identified. Specific outdoor particles such as dust and carbon particles were detected in indoor air. The generation of particles from indoor sources was studied and several different types of particle were found to be present in environmental tobacco smoke (ETS): three were potassium-rich (with differing proportions of carbon) emitted directly in the exhaled mainstream smoke. Two other types arose mainly when the cigarette was left smouldering on an ash-tray. Another particle type exhibited a strong signal at m/z 84, most likely due to a nicotine fragment. The temporal trend of this specific particle type showed likely condensation of semi-volatile constituents on existing potassium-rich particles. A release of insect repellent in the room was also successfully monitored.
2003年8月，一台气溶胶飞行时间质谱仪（ATOFMS；TSI 3800）被部署到希腊雅典。该仪器可提供多分散气溶胶的相关信息，能实时获取0.3至3微米范围内精确的空气动力学直径（±1%）以及单个颗粒的正负质谱数据。在市中心一条小路旁一座建筑内的一间办公室里进行了室内和室外采样，并识别出了各种室外和室内源。在室内空气中检测到了特定的室外颗粒，如灰尘和碳颗粒。对室内源产生的颗粒进行了研究，发现环境烟草烟雾（ETS）中存在几种不同类型的颗粒：三种富含钾（碳含量不同），直接排放于呼出的主流烟雾中。另外两种类型主要在香烟在烟灰缸中阴燃时产生。另一种颗粒类型在质荷比84处显示出强烈信号，很可能是由于尼古丁碎片。这种特定颗粒类型的时间趋势表明，半挥发性成分可能在现有的富含钾的颗粒上发生了凝结。室内驱蚊剂的释放也得到了成功监测。
