- 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.