June 2009
Front Matter
Training
40
CSN Sampling
•The Chemical Speciation Network is a companion network
of the mass-based Federal
Reference Method (FRM) network implemented
to support the PM2.5 National Ambient
Air Quality Standards (NAAQS).
•The purpose of the CSN is to provide nationally
consistent speciated PM2.5 data to assess
trends at representative sites in urban areas across the country.
•As part of a routine monitoring
program, the CSN quantifies mass
concentrations and PM2.5 constituents,
including numerous trace elements,
ions (sulfate, nitrate, sodium,
potassium, ammonium), elemental
carbon, and organic carbon.
program, the CSN quantifies mass
concentrations and PM2.5 constituents,
including numerous trace elements,
ions (sulfate, nitrate, sodium,
potassium, ammonium), elemental
carbon, and organic carbon.
•CSN data are available via AQS.
U.S.
Environmental Protection Agency (2007f)
Circa 2005