Constrained Source Apportionment of Coarse Particulate Matter and Selected Trace Elements in Three Cities from the Multi-Ethnic Study of Atherosclerosis.

@article{Sturtz2014ConstrainedSA,
  title={Constrained Source Apportionment of Coarse Particulate Matter and Selected Trace Elements in Three Cities from the Multi-Ethnic Study of Atherosclerosis.},
  author={Timothy M. Sturtz and Sara Dubowsky Adar and Timothy R Gould and Timothy V. Larson},
  journal={Atmospheric environment},
  year={2014},
  volume={84},
  pages={65-77}
}
PM10-2.5 mass and trace element concentrations were measured in Winston-Salem, Chicago, and St. Paul at up to 60 sites per city during two different seasons in 2010. Positive Matrix Factorization (PMF) was used to explore the underlying sources of variability. Information on previously reported PM10-2.5 tire and brake wear profiles was used to constrain these features in PMF by prior specification of selected species ratios. We also modified PMF to allow for combining the measurements from all… CONTINUE READING

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