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Peer reviewed
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Bossi, Rossana; Vorkamp, Katrin; Skov, Henrik
Environmental pollution (1987), October 2016, 2016-Oct, 2016-10-00, 20161001, Volume: 217Journal Article
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. Display omitted •PBDEs and neutral PFASs are reported for the first time in the atmosphere of North Greenland.•Atmospheric concentrations of POPs do not show any trend in the period 2008–2013.•Some compounds showed seasonal variations, and in most cases a maximum was found during summer.•Temperature dependency was observed for a few of the investigated compounds. Chlorinated pesticides, polybrominated- and polyfluorinated compounds have been measured in the atmosphere of North Greenland in the years 2008–2013.
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