Journal article
Loading Effect Correction for Real-Time Aethalometer Measurements of Fresh Diesel Soot
Journal of the Air & Waste Management Association (1995), Vol.57(7), pp.868-873
07/01/2007
Handle:
https://hdl.handle.net/2376/115320
PMID: 17688002
Abstract
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 coefficient 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
2.5
; PM <2.5 µm in aerodynamic diameter) from diesel exhaust. The aethalometer reported BC concentrations decreasing with time from 48.1 to 31.5 µg m
−3
when exposed to constant PM
2.5
concentrations of 55 ± 1 µg m
−3
and b
scat
= 95 ± 3 Mm
−1
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.
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Details
- Title
- Loading Effect Correction for Real-Time Aethalometer Measurements of Fresh Diesel Soot
- Creators
- Jorge Jimenez - EULA-Chile, Environmental Sciences Center , University of ConcepciónCandis Claiborn - Department of Civil and Environmental Engineering , Washington State UniversityTimothy Larson - Department of Civil and Environmental Engineering , University of WashingtonTimothy Gould - Department of Civil and Environmental Engineering , University of WashingtonThomas W Kirchstetter - Environmental Energy Technologies Division, Ernest Orlando Lawrence Berkeley National Laboratory , University of CaliforniaLara Gundel - Environmental Energy Technologies Division, Ernest Orlando Lawrence Berkeley National Laboratory , University of California
- Publication Details
- Journal of the Air & Waste Management Association (1995), Vol.57(7), pp.868-873
- Academic Unit
- Carson College of Business; Civil and Environmental Engineering, Department of
- Publisher
- Taylor & Francis Group
- Identifiers
- 99900547682101842
- Language
- English
- Resource Type
- Journal article