Environment Counts | Canadian oil sands found to be major source of anthropogenic organic aerosols :

Worldwide heavy oil and bitumen deposits amount to 9 trillion barrels of oil. 1.7 trillion barrels of these deposits are located in Canada. A recent study which conducted airborne measurements over the Canadian oil sands reports that the evaporation and atmospheric oxidation of low-volatility organic vapours from the mined oil sands material is directly responsible for the majority of the observed secondary organic aerosol (SOA) mass. The production rates of 45–84 tonnes of SOAs per day make the oil sands one of the largest sources of anthropogenic SOAs in North America. Our findings suggest that the production of heavy oils could be a large source of SOAs in many production and refining regions worldwide. Oil sands operations as a large source of secondary organic aerosols, John Liggio, Shao-Meng Li et al, Nature (2016) doi:10.1038/nature17646