Characteristics of Volatile Organic Compounds (VOCs) inresidences in Beijing, China
- 作者：Liu Xiao-tuYan Mei-linDuan Heng-yiLiu Zhao-rong
- 会议时间：2012-11-16
- 关键词：Indoor air ; Volatile Organic Compounds ; Carbonyl compounds ; Seasonality ; p-Dichlorobenzene
- 作者单位：State Key Joint Laboratory of Environmental Simulation and Pollution ControlCollege of Environmental Sciences and Engineering, Peking University, Beijing, 100871
- 母体文献：中国环境科学学会室内环境与健康分会第五届年会论文集
- 会议名称：中国环境科学学会室内环境与健康分会第五届年会
- 会议地点：长沙
- 主办单位：中国环境科学学会
- 语种：chi
摘要
A wide range of VOCs were measured both indoor and outdoor in 50 residences of Beijing in heating(December in 2011) and non-heating season (from April to May in 2012). Passive samples were deployed for 24hours at each site, and 102 compounds were quantified. Formaldehyde, acetone and acetaldehyde were mostabundant carbonyl compounds both indoor and outdoor with median concentrations of 32.1, 21.7 and 15.3μg/m3,respectively. Toluene (14.4μg/m3), ethane (17.6μg/m3), propane (11.2μg/m3), ethene (8.40μg/m3), n-butane(6.87μg/m3), and benzene (5.95μg/m3) had the highest median concentrations. Seasonal variations were observedwithin different compounds. Carbonyl compounds had higher concentrations in non-heating season both indoorand outdoor, while alkanes, alkenes, halohydrocarbon, aromatic compounds showed a somewhat increase inheating season. Most of the investigated VOCs had indoor/outdoor (I/O) concentration from 1 to 10, up to 100 forseveral compounds, indicating sources in the indoor environment are prevailing.