title: [Concentrations and influencing factors of gaseous polycyclic aromatic hydrocarbons in residential air in Beijing].
abstract: 7 gas phase PAHs components in indoor air collected from 38 families were investigated by modified passive air samplers in Beijing areas during the local heating and non-heating seasons, and the influencing factors were discussed as well. The analytical results indicate that the gasous PAHs in local indoor air are dominated by 2 and 3 rings compounds, the mean concentrations for the 7 individual gaseous components range from 1 to 40 ng/m3, and the average concentration of total gaseous PAHs is about 100 ng/m3. There is no significant difference in total gaseous PAHs concentrations between the heating and the non-heating seasons, while some apparent seasonal changes occur in ACY and FLA concentrations. Compared with heating season, contribution of 2 rings compounds decreases while the proportions of 3 and 4 rings species increase during the non-heating season. Based on household activity questionnaires and actual analytical concentrations, the main influencing factors accounted for gaseous PAHs in indoor air, identified by multifactor analysis of variance, include cigarette smoking, use of moth ball, intensity of draft, cuisine frequency and built age.
authors.affiliation: Key Laboratory for Earth Surface Processes, Ministry of Education, College of Environmental Sciences, Peking University, Beijing 100871, China. weizhicheng@pku.edu.cn
authors.forename: Zhi-cheng
authors.initials: ZC
authors.lastname: Wei
authors.forename: Biao
authors.initials: B
authors.lastname: Chang
authors.forename: Wei-xun
authors.initials: WX
authors.lastname: Qiu
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.forename: Shi-min
authors.initials: SM
authors.lastname: Wu
authors.forename: Bao-shan
authors.initials: BS
authors.lastname: Xing
authors.forename: Wen-xin
authors.initials: WX
authors.lastname: Liu
authors.forename: Shu
authors.initials: S
authors.lastname: Tao
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis*; D002681:China; D006801:Humans; D019570:Inhalation Exposure / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D018570:Risk Assessment; D012621:Seasons; D012907:Smoking; D011795:Surveys and Questionnaires; D014028:Tobacco Smoke Pollution / Q000032:analysis*; D014504:Urban Health / Q000706:statistics & numerical data
chemical_list: D000393:Air Pollutants; D011084:Polycyclic Aromatic Hydrocarbons; D014028:Tobacco Smoke Pollution