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Ambient concentrations of speciated mercury (Hg) have been measured at many locations across Canada. Mercury in the atmosphere is measured in three operationally-defined forms - gaseous elemental mercury (GEM), reactive gaseous mercury (RGM), and particulate-bound mercury (PBM). Under most...

At all locations the TGM measurements were made using automatic Tekran ® 2537 mercury vapour analyzers (described in detail in Poissant, 1997). The air is typically sampled at flow rates between 1.0 and 1.5 L/min (depending on location) and is passed through a Teflon filter (47 mm diameter; 0.45...

A cross-over study was conducted among 42 healthy adults during the summer of 2010 in Ottawa, Canada. Participants cycled for 1 hour along high and low traffic routes and ultrafine particles (UFPs) 0.1um in aerodynamic diameter, particulate matter (PM2.5) 2.5 µm in aerodynamic diameter, and black...

A cross-over study was conducted among 42 healthy adults during summer 2010 in Ottawa, Canada. Participants cycled for 1-hour along high and low-traffic routes and volatile organic compound (VOC) exposures were determined along each route.

The Great Lakes Basin (GLB) Monitoring and Surveillance program under the Chemicals Management Plan (CMP) of Environment and Climate Change Canada (ECCC) has been operating since 1990 as a result of provisions called for in the Great Lakes Water Quality Agreement (GLWQA) between Canada and the...

Precipitation samples are collected at a number of sites in Alberta by Alberta Environment and Parks. Samples are analyzed for select cations and anions as well as pH. Samples are collected weekly using an event-only precipitation sampling protocol. The specific monitoring objectives are to: (1)...