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An Inter-Comparison of Instruments Measuring Black Carbon Content of Soot Particles

Slowik, Jay G. and Cross, Eben S. and Han, Jeong-Ho and Davidovits, Paul and Onasch, Timothy B. and Jayne, John T. and Williams, Leah R. and Canagaratna, Manjula R. and Worsnop, Douglas R. and Chakrabarty, Rajan K. and Moosmuller, Hans and Arnott, William P. and Schwarz, Joshua P. and Gao, Ru-Shan and Fahey, DavidW. and Kok, Gregory L. and Petzold, Andreas (2007) An Inter-Comparison of Instruments Measuring Black Carbon Content of Soot Particles. Aerosol Science and Technology, 41, pp. 295-314. DOI: 10.1080/02786820701197078.

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Abstract

Inter-comparison studies of well-characterized fractal soot particles were conducted using the following four instruments: Aerosol Mass Spectrometer-Scanning Mobility Particle Sizer (AMS-SMPS), Single Particle Soot Photometer (SP2), Multi-Angle Absorption Photometer (MAAP), and Photoacoustic Spectrometer (PAS). These instruments provided measurements of the refractory mass (AMS-SMPS), incandescent mass (SP2) and optically absorbing mass (MAAP and PAS). The particles studied were in the mobility diameter range from 150 nm to 460 nm and were generated by controlled flames with fuel equivalence ratios ranging between 2.3 and 3.5. The effect of organic coatings (oleic acid and anthracene) on the instrument measurements was determined. For uncoated soot particles, the mass measurements by the AMSSMPS, SP2, and PAS instruments were in agreement to within 15%, while the MAAP measurement of optically-absorbing mass was higher byapprox. 50%. Thin organic coatings (approx. 10 nm) did not affect the instrument readings.Athicker (approx. 50 nm) oleic acid coating likewise did not affect the instrument readings. The thicker ( approx. 60 nm) anthracene coating did not affect the readings provided by the AMS-SMPS or SP2 instruments but increased the reading of the MAAP instrument by approx. 20% and the reading of the PAS by approx. 65%. The response of each instrument to the different particle types is discussed in terms of particle morphology and coating material.

Document Type:Article
Title:An Inter-Comparison of Instruments Measuring Black Carbon Content of Soot Particles
Authors:
AuthorsInstitution or Email of Authors
Slowik, Jay G.Boston College, MA, USA
Cross, Eben S.Boston College, MA, USA
Han, Jeong-HoBoston College, MA, USA
Davidovits, PaulBoston College, MA, USA
Onasch, Timothy B.Aerodyne Research, Inc., Billerica, MA, USA
Jayne, John T.Aerodyne Research, Inc., Billerica, MA, USA
Williams, Leah R.Aerodyne Research, Inc., Billerica, MA, USA
Canagaratna, Manjula R.Aerodyne Research, Inc., Billerica, MA, USA
Worsnop, Douglas R.Aerodyne Research, Inc., Billerica, MA, USA
Chakrabarty, Rajan K.DRI, Reno, NV, USA
Moosmuller, HansDRI, Reno, NV, USA
Arnott, William P.DRI, Reno, NV, USA
Schwarz, Joshua P.NOAA Earth System Research Laboratory, Boulder, CO, USA
Gao, Ru-ShanNOAA Earth System Research Laboratory, Boulder, CO, USA
Fahey, DavidW.NOAA Earth System Research Laboratory, Boulder, CO, USA
Kok, Gregory L.DMT, Boulder, CO, USA
Petzold, AndreasUNSPECIFIED
Date:2007
Journal or Publication Title:Aerosol Science and Technology
Volume:41
DOI:10.1080/02786820701197078
Page Range:pp. 295-314
Status:Published
Keywords:black carbon, aerosol instrumentation, organic coating, MAAP
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:V UR - Schonung von Umwelt und Ressourcen (old)
DLR - Research area:Transport
DLR - Program:V UR - Schonung von Umwelt und Ressourcen
DLR - Research theme (Project):V - Umweltwirkungen des Verkehrs (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Dr.rer.nat. Andreas Petzold
Deposited On:21 Jun 2007
Last Modified:12 Dec 2013 20:25

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