- Author
-
Widmann, J. F.
|
Duchez, J.
|
Yang, J. C.
|
Conny, J. M.
|
Mulholland, G. W.
- Title
- Measurement of the Optical Extinction Coefficient of Combustion-Generated Aerosol. Technical Note.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
Fluent Inc., Lebanon, NH
Maryland Univ., College Park
- Journal
-
Journal of Aerosol Science,
Vol. 36,
No. 2,
283-289,
February 2005
- Keywords
-
aerosols
|
extinction
|
combustion
|
soot
|
smoke
|
carbon
- Identifiers
- extinction coefficient; arbonaceous aerosol; elemental carbon; total carbon; optical extinction measurements; EC/TC measurements; elemental carbon/total carbon (EC/TC)
- Abstract
- This note describes measurements of the mass-specific extinction coefficient, \'01s, of carbonaceous aerosol produced during hydrocarbon combustion. Measurements of \'01s were obtained by laser extinction at \'02 = 632 nm. The aerosol was generated using a laminar diffusion flame, and the mass-specific extinction coefficient determined as a function of the global equivalence ratio, \'03. The elemental carbon content of the aerosol was also determined with respect to \'03.A relationship was developed between the elemental carbon/total carbon (EC/TC) ratio and \'01s. A simple method of producing laboratory aerosol with controlled EC/TC ratio is also presented.