Source apportionment of PM2.5 at an urban IMPROVE site in Seattle, Washington.

  title={Source apportionment of PM2.5 at an urban IMPROVE site in Seattle, Washington.},
  author={Naydene N Maykut and J. Tweedie Lewtas and Eugene Y. Kim and Timothy V. Larson},
  journal={Environmental science & technology},
  volume={37 22},
The multivariate receptor models Positive Matrix Factorization (PMF) and Unmix were used along with the EPA's Chemical Mass Balance model to deduce the sources of PM2.5 at a centrally located urban site in Seattle, WA. A total of 289 filter samples were obtained with an IMPROVE sampler from 1996 through 1999 and were analyzed for 31 particulate elements including temperature-resolved fractions of the particulate organic and elemental carbon. All three receptor models predicted that the major… CONTINUE READING
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