title: [Volatile organic compounds concentrations and sources inside new air-conditioned bus].
abstract: The distributing profile and concentration level inside new air-conditioned buses with 53 seats have been determined using the method of thermal desorption-capillary GC/MS under vehicle static conditions. Compounds were identified from their mass spectral data by using US National Institute of Standards and Technology (NIST02). The total numbers of identified components were 33 inside buses, including alkenes (15,45.4%), aromatic compounds (9,27.3%), alcohols (4,12.1%), ketones (3,9.1%) and esters (2,6.1%), especially in the range of C6-C10. The top 5 compounds measured inside buses were decane (8.01 mg/m3), 3-methylhexane (7.10 mg/m3), heptane (5.10 mg/m3), isoheptane (4.20 mg/m3) and 1-Methyl-3-ethylbenzene (3.56 mg/m3), and total volatile organic compounds (TVOC) > 52.5 mg/m3. The main sources of in-vehicle hydrocarbons and aromatic compounds comes from cabin components and interior trim materials (e.g., sealants, carpets, adhesives, paints, leather, plastics, PU foam and PE foam) that may retain certain VOCs during manufacturing, and/or emit these compounds over an extended period of time from off-gassing, aging-related breakdown products, heating/cooling and so on.
authors.affiliation: School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China. awei810715@bit.edu.cn
authors.forename: Ke-Wei
authors.initials: KW
authors.lastname: You
authors.forename: Yun-Shan
authors.initials: YS
authors.lastname: Ge
authors.forename: Yi-Xin
authors.initials: YX
authors.lastname: Qian
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.forename: Bo
authors.initials: B
authors.lastname: Feng
authors.forename: Yan-Ni
authors.initials: YN
authors.lastname: Zhang
authors.forename: Zhan-Wu
authors.initials: ZW
authors.lastname: Ning
authors.forename: Bin
authors.initials: B
authors.lastname: Hu
authors.forename: Shou-Tang
authors.initials: ST
authors.lastname: Zhao
mesh_terms: D000389:Air Conditioning; D000393:Air Pollutants / Q000032:analysis / Q000592:standards; D016902:Air Pollution, Indoor / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods / Q000592:standards; D018986:Motor Vehicles; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D055549:Volatile Organic Compounds