Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Polyfluoroalkyl compounds in the Canadian Arctic atmosphere
AU - Ahrens, Lutz
AU - Shoeib, Mahiba
AU - Del Vento, Sabino
AU - Codling, Garry
AU - Halsall, Crispin
PY - 2011/8/19
Y1 - 2011/8/19
N2 - 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.
AB - 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.
U2 - 10.1071/EN10131
DO - 10.1071/EN10131
M3 - Journal article
VL - 8
SP - 399
EP - 406
JO - Environmental Chemistry
JF - Environmental Chemistry
SN - 1448-2517
IS - 4
ER -