Ecosystem Exposure - Passive Sampling Data (French, CSV)

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Publisher-reported update

2019-02-21

Environment and Climate Change Canada has been monitoring ambient air in the oil sands region for polycyclic aromatic compounds (PACs) using passive air samplers since November 2010. Ambient air samples collected using the established protocols of the Global Atmospheric Passive Sampling (GAPS) Network are termed passive PAC samples. Passive samplers are deployed for two-month periods across a network of 17 sites that are maintained by the Wood Buffalo Environmental Association. Average PAC levels across the passive sampling sites in the oil sands region are comparable to urban/sub-urban levels across Canada and are elevated compared with background rural sites in Canada. Higher concentrations of PACs are measured at sites that are closer to oil sands mining and upgrading facilities compared with sites that are further away. Benzo(a)pyrene (BaP) is a PAC formed mainly as a result of incomplete combustion of carbon-based materials and fuels during industrial and other human activities, as well as natural events such as forest fires. It is associated with heavy molecular weight PACs that may be more carcinogenic. The data from the measurements conducted so far (excluding data from…

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