@article{25543,
  author = {Jorge Jimenez and Candis S Claiborn and Timothy Larson and Timothy Gould and Thomas W Kirchstetter and Lara A Gundel},
  title = {Loading Effect Correction for Real-Time Aethalometer Measurements of Fresh Diesel Soot},
  abstract = {<p>In this study, a correction was developed for the aethalometer to measure real-time black carbon (BC) concentrations in an environment dominated by fresh diesel soot. The relationship between the actual mass-specific absorption co-efficient for BC and the BC-dependent attenuation coefficients was determined from experiments conducted in a diesel exposure chamber that provided constant concentrations of fine particulate matter (PM; PM<sub>2.5</sub>; PM &lt;2.5 μm aerodynamic diameter) from diesel exhaust. The aethalometer reported BC concentrations decreasing with time from 48.1 to 31.5 μg m<sup>-3</sup> when exposed to constant PM<sub>2.5</sub> concentrations of 55 ± 1 μg m<sup>-3</sup> and b<sub>scat</sub> 95 ± 3Mm<sup>-1</sup> from diesel exhaust. This apparent decrease in reported light-absorbing PM concentration was used to derive a correction K (ATN) for loading of strong light-absorbing particles onto or into the aethalometer filter tape, which was a function of attenuation of light at 880 nm by the embedded particles.</p>},
  year = {2007},
  journal = {Journal of the Air & Waste Management Association},
  volume = {57},
  pages = {868–873},
  doi = {10.3155/1047-3289.57.7.868},
}