Tunnel study of on-road vehicle emissions and the photochemical potential in Taiwan

Yi Chyun Hsu, Jiun Horng Tsai, Huan Wen Chen, Wen Yinn Lin

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


Motor vehicle emission factors of carbon monoxide (CO) and non-methane volatile organic compounds (NMVOCs) were calculated inside the Chung-Cheng Tunnel of Kaohsiung in Taiwan. The results were compared with those model predictions from the Mobile Taiwan 2.0 model. Individual concentrations of 21 species of NMVOCs were also determined. Photochemical potential of NMVOCs was evaluated by using the maximum incremental reactivity (MIR). Field data showed that the integrated emission factors of CO and NMVOCs for actual fleet were 6.3 and 1.5 g/veh km, respectively. The error range of these factors may be up to 45%. The predicted values by the Mobile Taiwan 2.0 model closely matched the observed data. Concentrations of isopentane, 2-methylpentane, toluene and m, pxylene were the dominant species of NMVOCs. The ratio of maximum incremental reactivity to NMVOCs concentration was 3.9, similar to those of the studies in the US Fort McHenry and Tuscarora Tunnel. (C) 2000 Elsevier Science Ltd.

Original languageEnglish
Pages (from-to)227-234
Number of pages8
Issue number3
Publication statusPublished - 2001 Feb

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • General Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis


Dive into the research topics of 'Tunnel study of on-road vehicle emissions and the photochemical potential in Taiwan'. Together they form a unique fingerprint.

Cite this