Are emissions of black carbon from gasoline vehicles underestimated? Insights from near and on-road measurements.

  title={Are emissions of black carbon from gasoline vehicles underestimated? Insights from near and on-road measurements.},
  author={John Liggio and Mark P Gordon and Gregory Smallwood and Shao-Meng Li and Craig A. Stroud and Ralf M. Staebler and Gang Lu and Patrick K-M Lee and Brett Taylor and Jeffrey Robert Brook},
  journal={Environmental science & technology},
  volume={46 9},
Measurements of black carbon (BC) with a high-sensitivity laser-induced incandescence (HS-LII) instrument and a single particle soot photometer (SP2) were conducted upwind, downwind, and while driving on a highway dominated by gasoline vehicles. The results are used with concurrent CO(2) measurements to derive fuel-based BC emission factors for real-world average fleet and heavy-duty diesel vehicles separately. The derived emission factors from both instruments are compared, and a low SP2 bias… CONTINUE READING
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