title: Distribution and characteristic of PAHs in snow of Fildes Peninsula.
abstract: Polycyclic aromatic hydrocarbons (PAHs) investigation in different matrices has been reported largely, whereas reports on snow samples were limited. Snow, as the main matrix in the polar region, has an important study meaning. PAHs in snow samples were analyzed to investigate the distribution and contamination status of them in the Antarctic, as well as to provide some references for global migration of PAHs. Snow samples collected in Fildes Peninsula were enriched and separated by solid-phase membrane disks and eluted by methylene dichloride, then quantified by gas chromatography/mass spectrometry. All types of PAHs were detected except for Benzo(a)pyrene. Principal component analysis method was applied to characterize them. Three factors (Naphthalene, Fluorene and Phenanthrene) accounted for 60.57%, 21.61% and 9.80%, respectively. The results showed that the major PAHs sources maybe the atmospheric transportation, and the combustion of fuel in Fildes Peninsula. The comparison of concentration and types of PAHs between accumulated snow and fresh snow showed that the main compound concentrations in accumulated snow samples were higher than those in fresh ones. The risk assessment indicated that the amount of PAHs in the snow samples would not lead to ecological risk.
authors.affiliation: Key laboratory for Ecological Environment in Coastal Areas, National Marine Environmental Monitoring Center, Dalian 116023, China. gsna@nmemc.gov.cn
authors.forename: Guangshui
authors.initials: G
authors.lastname: Na
authors.forename: Chunyang
authors.initials: C
authors.lastname: Liu
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wang
authors.forename: Linke
authors.initials: L
authors.lastname: Ge
authors.forename: Xindong
authors.initials: X
authors.lastname: Ma
authors.forename: Ziwei
authors.initials: Z
authors.lastname: Yao
mesh_terms: D000864:Antarctic Regions; D004785:Environmental Pollutants / Q000032:analysis* / Q000737:chemistry; D005843:Geography; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000737:chemistry; D025341:Principal Component Analysis; D012306:Risk; D012914:Snow / Q000737:chemistry*
chemical_list: D004785:Environmental Pollutants; D011084:Polycyclic Aromatic Hydrocarbons