Determination of concentration and size distribution of black carbon in submicron aerosol from data of nephelometric measurements of angular scattering coefficients

Valerii S. Kozlov; Rustam F. Rakhimov; Vladimir P. Shmargunov

doi:10.1117/12.2204926

19 November 2015 Determination of concentration and size distribution of black carbon in submicron aerosol from data of nephelometric measurements of angular scattering coefficients

Valerii S. Kozlov, Rustam F. Rakhimov, Vladimir P. Shmargunov

Author Affiliations +

Proceedings Volume 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics; 96802Z (2015) https://doi.org/10.1117/12.2204926
Event: XXI International Symposium Atmospheric and Ocean Optics. Atmospheric Physics, 2015, Tomsk, Russian Federation

Abstract

The possibility of determining the Black Carbon (BC) concentration and its size distribution in submicron aerosol from data of polarization spectronephelometric measurements of angular aerosol scattering is demonstrated for the first time. The data of simultaneous nephelometric and aethalometric measurements of BC concentration in wood smoke are compared. The inverse problem is solved from measurements of 40 polarization components of spectral coefficients of angular scattering, and aerosol filling factors and the imaginary part of the complex refractive indexes are determined for subfractions of ultrafine- (radii of 30-100 nm), fine- (100-430 nm), and coarse-disperse (430-770 nm) particles. Then the total BC concentration, its size distribution, and BC fraction are estimated in the approximation of homogeneous volume internal mixture of BC and nonabsorbing matter. The analysis shows that at the long evolution of smoke aerosol, nephelometric and aethalometric estimates of the BC concentrations are in a good agreement. The discrepancy averages about 16% for concentrations varying in a range 30-1000 μg/m³.

Citation Download Citation

Valerii S. Kozlov, Rustam F. Rakhimov, and Vladimir P. Shmargunov "Determination of concentration and size distribution of black carbon in submicron aerosol from data of nephelometric measurements of angular scattering coefficients", Proc. SPIE 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics, 96802Z (19 November 2015); https://doi.org/10.1117/12.2204926

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available