title: Characterization of TSP-bound n-alkanes and polycyclic aromatic hydrocarbons at rural and urban sites of Tianjin, China.
abstract: Total suspended particle (TSP) was collected and analyzed at rural and urban sites in Tianjin, China during the domestic heating season (from 15 November to 15 March) of 2003/4 for n-alkanes and 16 polycyclic aromatic hydrocarbons (PAHs). The normalized distribution of n-alkanes with the peak at C22, C23, C24 or C25 suggested that fossil fuel utilization was the major source of particulate n-alkanes at both sites. PAHs normalized distribution for each sample was similar and the higher molecular weight PAH dominated the profile (around 90%) indicating a stronger combustion source at both sites. Precipitation and wind were the most important meteorological factors influencing TSP and PAHs atmospheric concentrations. In the urban area the emission height had significant influence on PAHs levels at different heights under the relative stable atmospheric conditions. Coal combustion was the major source for TSP-bound PAHs at both sites based on some diagnostic ratios.
authors.affiliation: Laboratory for Earth Surface Processes, College of Environmental Sciences, Peking University, Beijing 100871, PR China.
authors.forename: Shui-Ping
authors.initials: SP
authors.lastname: Wu
authors.forename: Shu
authors.initials: S
authors.lastname: Tao
authors.forename: Zhi-Huan
authors.initials: ZH
authors.lastname: Zhang
authors.forename: Tian
authors.initials: T
authors.lastname: Lan
authors.forename: Qian
authors.initials: Q
authors.lastname: Zuo
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000473:Alkanes / Q000032:analysis*; D002681:China; D002947:Cities; D003031:Coal; D004784:Environmental Monitoring / Q000379:methods; D004787:Environmental Pollution / Q000032:analysis*; D006361:Heating; D052638:Particulate Matter; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D011891:Rain; D014919:Wind
chemical_list: D000393:Air Pollutants; D000473:Alkanes; D003031:Coal; D052638:Particulate Matter; D011084:Polycyclic Aromatic Hydrocarbons