Temporal trends of phosphorus in urban atmospheric aerosols

Air particulate samples collected from a Canadian urban area station showed the seasonal trend of phosphorus with peak levels observed for April–June periods and not significantly changed between 2007 2015. The measured as total (TP) in digested aqueous extracts an exponential increase daily temperature (R 2 = 0.544, N 474), best correlation 2010 subset 0.727, 55). was suspended particles (TSP). Longer dry during spring to summer months favored higher P level on aerosols. precipitation pattern dependence indicate possible climate change influence aerosol levels. unchanged yearly TP content does directly reflect dropping surface water after 1990s same period.