title: Determination of alkyl polycyclic aromatic hydrocarbons in dustfall by supercritical fluid extraction followed by gas chromatography/mass spectrum.
abstract: A method of supercritical fluid extraction (SFE) followed by gas chromatography/mass spectrum was developed for the determination of alkyl polycyclic aromatic hydrocarbons (APAHs) in dustfall. Extraction parameters including pressure, temperature and time were optimized by orthogonal experimental design. Recovery fell into the range of 73.6%-105.0%, and was prior to the efficiency of ultrasonic extraction. Forty-one 2-4-ring APAHs homologues were detected from dustfall samples. The concentrations of total APAHs were about 2 microg g(-1). The ratios of APAHs/TPAHs (PAHs + APAHs) altered from 19.8% to 24.8%. Source analysis indicated that APAHs originated from combustion.
authors.affiliation: Department of Environmental Science and Engineering, Center for Atmospheric Chemistry Study, Fudan University, Shanghai, China.
authors.forename: Jin-Jun
authors.initials: JJ
authors.lastname: Lian
authors.forename: Chun-Lei
authors.initials: CL
authors.lastname: Li
authors.forename: Yu
authors.initials: Y
authors.lastname: Ren
authors.forename: Tian-Tao
authors.initials: TT
authors.lastname: Cheng
authors.forename: Jian-Min
authors.initials: JM
authors.lastname: Chen
mesh_terms: D025924:Chromatography, Supercritical Fluid / Q000379:methods*; D004391:Dust / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D011083:Polycyclic Compounds / Q000032:analysis*
chemical_list: D004391:Dust; D011083:Polycyclic Compounds