title: Concentrations of organochlorine pesticides, polybrominated diphenyl ethers and perfluorinated compounds in the atmosphere of North Greenland.
abstract: Atmospheric concentrations of organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs) and neutral per- and polyfluoroalkyl substances (PFAS) have been measured at Villum Research Station, Station Nord (North Greenland) in the period 2008-2013. Atmospheric concentrations of OCPs at the same site have been previously reported for the years 2008-2010. The detection frequency and the average concentrations of OCPs have not significantly changed since the previous study. PBDE congeners (∑13PBDEs) were measured for the first time in North Greenland at concentrations similar to those observed for other remote sites, confirming that these compounds are ubiquitous in the Northern Hemisphere. The ∑13PBDEs concentration ranged from not detected (n.d.) to 6.26 pg m(-3). The BDE congeners found in more than 30% of the samples were BDE-17, BDE-28, BDE-47, BDE-71, BDE-99 and BDE-100. Also for neutral PFAS we present for the first time a multiyear series of measurements for North Greenland. The average sum of the seven measured neutral PFAS (∑7PFAS) ranged from 1.82 to 32.1 pg m(-3). The most abundant compound was 8:2 FTOH (44% of ∑7PFAS), followed by 6:2 FTOH and 10:2 FTOH. Perfluoroalkyl sulfonamides (FOSA) and perfluoroalkyl sulfonamidoethanols (FOSE) were also detected but at much lower concentrations than FTOHs. Temporal trends were investigated for all measured compounds but no significant trend in concentration was observed. Monthly average concentrations for the six years were calculated for each compound and the seasonal variation was investigated. Some OCPs and FTOHs showed seasonal variations, and in most cases a maximum was found during summer.
authors.affiliation: Department of Environmental Science, Arctic Research Center, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark. Electronic address: rbo@envs.au.dk.
authors.forename: Rossana
authors.initials: R
authors.lastname: Bossi
authors.affiliation: Department of Environmental Science, Arctic Research Center, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark.
authors.forename: Katrin
authors.initials: K
authors.lastname: Vorkamp
authors.affiliation: Department of Environmental Science, Arctic Research Center, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark; Institute for Chemical Engineering, Bio-technology and Environmental Technology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
authors.forename: Henrik
authors.initials: H
authors.lastname: Skov
mesh_terms: D017738:Alkanesulfonic Acids / Q000032:analysis*; D001272:Atmosphere / Q000737:chemistry*; D004784:Environmental Monitoring; D017611:Fluorine Compounds / Q000032:analysis*; D006116:Greenland; D055768:Halogenated Diphenyl Ethers / Q000032:analysis*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D006845:Hydrocarbons, Fluorinated / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D012621:Seasons
chemical_list: D017738:Alkanesulfonic Acids; D017611:Fluorine Compounds; D055768:Halogenated Diphenyl Ethers; D006843:Hydrocarbons, Chlorinated; D006845:Hydrocarbons, Fluorinated; D010575:Pesticides
keywords: Arctic atmosphere; Chlorinated pesticides; Neutral PFAS; North Greenland; Polybrominated diphenyl ethers