title: [Source apportionment on fine particles in Beijing].
abstract: The positive matrix factorization(PMF) method was used to apportion the sources for fine particles in Beijing. The data were obtained from four samplings from 1999 to 2000. The number of this data set was 40. The chemical compositions used in analysis include element carbon(EC), organics, SO4(2-), F-, Cl-, Fe, Ca, K, Mg, Al, Na, Zn, Mn, Ti, Pb, Ba and P. Six main sources, soil dust, construction dust, secondary source (by photochemical action), biomass burning, motor vehicle and coal burning were found.
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, Center for Environmental Sciences, Peking University, Beijing 100871, Chin.
authors.forename: Yu
authors.initials: Y
authors.lastname: Song
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Tang
authors.forename: Chen
authors.initials: C
authors.lastname: Fang
authors.forename: Yuanhang
authors.initials: Y
authors.lastname: Zhang
authors.forename: Min
authors.initials: M
authors.lastname: Hu
authors.forename: Limin
authors.initials: L
authors.lastname: Zeng
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002681:China
chemical_list: D000393:Air Pollutants