| Title: | "Emissions of C2 - C12 hydrocarbons in the Hsuehshan tunnel, Taiwan" |
| Address: | "Department of Safety, Health and Environmental Engineering, Central Taiwan University of Science and Technology, Taichung 40601 Taiwan, China. chlai2@ctust.edu.tw" |
| DOI: | 10.1016/s1001-0742(10)60500-1 |
| ISSN/ISBN: | 1001-0742 (Print) 1001-0742 (Linking) |
| Abstract: | "The concentrations of 56 hydrocarbons from C2 to C12 were measured simultaneously in the southbound bore, the northbound bore and the exhaust air shafts of the Hsuehshan tunnel near Yilan, Taiwan for 12 days during 2007 and 2008. A total of 60 integrated air samples were collected using stainless steel canisters and analyzed using GC/FID and GC/MS. The five most abundant species in all samples were ethylene, acetylene, isopentane, propylene and toluene. The exit/entrance ratios of total non-methane hydrocarbons (NMHC) concentration were 7.8 and 4.8 for the southbound and northbound bores, respectively. Furthermore, the exhaust from the vertical shafts affects air quality in the neighborhood. The most abundant species of emission rate (ER) was toluene (21.93-42.89 mg/sec), followed by isopentane, ethylene, propylene and 1-butene, with ER ranging from 2.50 to 9.31 mg/sec. The species in the three exhaust air shafts showed that the reactivities of these emissions are similar to those of vehicle emissions. Notably, the control of emissions in the vertical shafts of the vehicle tunnel will be important in the future" |
| Keywords: | "Air Pollutants/*analysis Chromatography, Gas/methods Environmental Monitoring/methods Humans Hydrocarbons/*analysis Mass Spectrometry/methods Taiwan Vehicle Emissions/*analysis Volatile Organic Compounds/*analysis Weather;" |
| Notes: | "MedlineLai, Chia-Hsiang Peng, Yen-Ping eng Research Support, Non-U.S. Gov't Netherlands 2011/11/10 J Environ Sci (China). 2011; 23(6):941-8. doi: 10.1016/s1001-0742(10)60500-1" |
