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Polyfluoroalkyl compounds in the Canadian Arctic atmosphere

Ahrens, Lutz and Shoeib, Mahiba and Del Vento, Sabino and Codling, Garry and Halsall, Crispin (2011) Polyfluoroalkyl compounds in the Canadian Arctic atmosphere. Environmental Chemistry, 8 (4). pp. 399-406. ISSN 1448-2517

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Abstract

Polyfluoroalkyl compounds (PFCs) were determined in high-volume air samples during a ship cruise onboard the Canadian Coast Guard Ship Amundsen crossing the Labrador Sea, Hudson Bay and the Beaufort Sea of the Canadian Arctic. Five PFC classes (i.e. perfluoroalkyl carboxylates (PFCAs), polyfluoroalkyl sulfonates (PFSAs), fluorotelomer alcohols (FTOHs), fluorinated sulfonamides (FOSAs), and sulfonamidoethanols (FOSEs)) were analysed separately in the gas phase collected on PUF/XAD-2 sandwiches and in the particle phase on glass-fibre filters (GFFs). The method performance of sampling, extraction and instrumental analysis were compared between two research groups. The FTOHs were the dominant PFCs in the gas phase (20-138 pg m(-3)), followed by the FOSEs (0.4-23 pg m(-3)) and FOSAs (0.5-4.7 pg m(-3)). The PFCAs could only be quantified in the particle phase with low levels (<0.04-0.18 pg m(-3)). In the particle phase, the dominant PFC class was the FOSEs (0.3-8.6 pg m(-3)). The particle-associated fraction followed the general trend of: FOSEs (similar to 25 %) > FOSAs (similar to 9%) > FTOHs (similar to 1%). Significant positive correlation between Sigma FOSA concentrations in the gas phase and ambient air temperature indicate that cold Arctic surfaces, such as the sea-ice snowpack and surface seawater could be influencing FOSAs in the atmosphere.

Item Type: Article
Journal or Publication Title: Environmental Chemistry
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 54383
Deposited By: ep_importer_pure
Deposited On: 22 May 2012 08:44
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 23:29
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/54383

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