Characteristics of VOCs in a Traffic Tunnel in Chengdu, China

Jin Feng Liang; Hong Ling Yin; Hua Wei Yuan; Shi Ping Li

doi:10.4028/www.scientific.net/AMR.955-959.1285

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Characteristics of VOCs in a Traffic Tunnel in Chengdu, China

Abstract:

The concentration levels and composition characteristics of Volatile Organic Compounds (VOCs) were analyzed at the entrance and middle site in a traffic tunnel located at Red Star Road Tunnel in Chengdu. Results showed: concentration of alkanes and aromatics were much higher than other VOCs in vehicle exhaust source. Aromatics, alkenes, aldehydes and ketones concentration levels in tunnel were higher than at the entrance site, and the alkenes concentration in the tunnel were 38 times that at the entrance tunnel. Concentration of alkanes and esters in the tunnel were lower than that at the entrance site.