Articles | Volume 15, issue 2
https://doi.org/10.5194/amt-15-241-2022
https://doi.org/10.5194/amt-15-241-2022
Research article
 | 
19 Jan 2022
Research article |  | 19 Jan 2022

Measurement of black carbon emissions from multiple engine and source types using laser-induced incandescence: sensitivity to laser fluence

Ruoyang Yuan, Prem Lobo, Greg J. Smallwood, Mark P. Johnson, Matthew C. Parker, Daniel Butcher, and Adrian Spencer

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Cited articles

Adams, K. M., Davis, L. I., Japar, S. M., and Pierson, W. R.: Real-time, in situ measurements of atmospheric optical absorption in the visible via photoacoustic spectroscopy-II. Validation for atmospheric elemental carbon aerosol, Atmos. Environ., 23, 693–700, https://doi.org/10.1016/0004-6981(89)90017-6, 1989. 
Air quality expert group (AQEQ): Particulate Matter in the UK: Summary, Defra, London, ISBN 0-85521-144-X, available at: https://uk-air.defra.gov.uk/library/assets/documents/reports/aqeg/Particulate_Matter_in_The_UK_2005_Summary.pdf (last access: 10 December 2020​​​​​​​), 2005.​​​​​​​ 
Arnott, W. P.: Photoacoustic and filter-based ambient aerosol light absorption measurements: Instrument comparisons and the role of relative humidity, J. Geophys. Res., 108, 4034, https://doi.org/10.1029/2002JD002165, 2003. 
Axelsson, B., Collin, R., and Bengtsson, P.-E.: Laser-induced incandescence for soot particle size measurements in premixed flat flames, Appl. Optics, 39, 3683, https://doi.org/10.1364/ao.39.003683, 2000. 
Bachalo, W. D., Sankar, S. V, Smallwood, G. J., and Snelling, D. R.: Development of the Laser-Induced Incandescence Method for the Reliable Characterization of Particulate Emissions, in: the International Symposia on Applications of Laser Techniques to Fluid Mechanics, Lisbon, 2002. 
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Short summary
The relationship between the non-volatile particulate matter (nvPM) mass emissions produced by different engine sources and the response of the LII 300 instrument, used for regulatory measurements of nvPM mass emissions in aircraft engine certification tests, was investigated for different sources and operating conditions. Laser fluence optimisation was required for real-time nvPM mass concentration measurements. These results will inform the development of updated calibration protocols.