Levels of ultrafine particles in the Taipei Rapid Transit System |
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Authors: | Yu-Hsiang Cheng Chia-Chen Liu Yi-Lun Lin |
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Institution: | aDepartment of Safety, Health and Environmental Engineering, Ming Chi University of Technology, 84 Gungjuan Rd, Taishan, Taipei 24301, Taiwan |
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Abstract: | Ultrafine particle number concentrations are measured at five stations and inside trains on four routes in the Taipei Rapid Transit System during October–December 2007. The results indicate that there are no additional emission sources of ultrafine particle on the platforms. Ultrafine particle levels at a ground level station were, however, adversely affected by traffic outside of the station. Moreover, particles can enter the underground stations via the subway tunnels resulting in high levels during weekdays. |
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Keywords: | Ultrafine particle Number concentration Condensation particle counter Taipei Rapid Transit System |
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