Effect of thermodenuding on the structure of nascent flame soot aggregates
- 1Department of Physics and Atmospheric Sciences Program, Michigan Technological University, Houghton, MI, 49931, USA
- 2Aerodyne Research Inc., Billerica, MA, 01821, USA
- 3Chemistry Department, Boston College, Chestnut Hill, MA, 02467, USA
- 4Centre for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA, 15232, USA
- 5Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, T6G 2G8, Canada
- 6Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
- anow at: Pacific Northwest National Laboratory, Richland, WA, 99354, USA
- 1Department of Physics and Atmospheric Sciences Program, Michigan Technological University, Houghton, MI, 49931, USA
- 2Aerodyne Research Inc., Billerica, MA, 01821, USA
- 3Chemistry Department, Boston College, Chestnut Hill, MA, 02467, USA
- 4Centre for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA, 15232, USA
- 5Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, T6G 2G8, Canada
- 6Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
- anow at: Pacific Northwest National Laboratory, Richland, WA, 99354, USA
Abstract. The optical properties (light scattering and absorption) of soot particles depend on soot size and index of refraction, but also on the soot complex morphology and the internal mixing with other material at the single particle level. For example, freshly emitted (nascent) soot particles can interact with other materials in the atmosphere, materials that can condense on soot and coat it. This coating can affect the soot optical properties by refracting light, or by changing the soot aggregate structure. A common approach to studying the effect of coating on soot optical properties is to measure absorption and scattering values in ambient air and then measure them again after removing the coating using a thermodenuder. In this approach, it is assumed that: 1) Most of the coating material is removed; 2) charred organic coating does not add to the refractory carbon; 3) oxidation of soot is negligible; and 4) the pre-existing core soot structure is left unaltered despite potential oxidation of the core at elevated temperature. In this study, we investigate the validity of the last assumption, by studying the effect of thermodenuding on the structure of nascent soot. To this end, we analyze the morphological properties of laboratory generated nascent soot, before and after thermodenuding. Our investigation shows that there is only minor restructuring of nascent soot by thermodenuding.
Janarjan Bhandari et al.


-
RC1: 'Study has litte, if any, relavence to atmospheric implications', Anonymous Referee #1, 14 Feb 2017
-
SC1: 'Reply to RC1', Claudio Mazzoleni, 15 Feb 2017
-
RC2: 'Replay to SC1', Anonymous Referee #1, 16 Feb 2017
-
AC1: 'Reply to the reviewer's comments and modified manuscript', Janarjan Bhandari, 07 Apr 2017
-
AC1: 'Reply to the reviewer's comments and modified manuscript', Janarjan Bhandari, 07 Apr 2017
-
RC2: 'Replay to SC1', Anonymous Referee #1, 16 Feb 2017
-
SC1: 'Reply to RC1', Claudio Mazzoleni, 15 Feb 2017


-
RC1: 'Study has litte, if any, relavence to atmospheric implications', Anonymous Referee #1, 14 Feb 2017
-
SC1: 'Reply to RC1', Claudio Mazzoleni, 15 Feb 2017
-
RC2: 'Replay to SC1', Anonymous Referee #1, 16 Feb 2017
-
AC1: 'Reply to the reviewer's comments and modified manuscript', Janarjan Bhandari, 07 Apr 2017
-
AC1: 'Reply to the reviewer's comments and modified manuscript', Janarjan Bhandari, 07 Apr 2017
-
RC2: 'Replay to SC1', Anonymous Referee #1, 16 Feb 2017
-
SC1: 'Reply to RC1', Claudio Mazzoleni, 15 Feb 2017
Janarjan Bhandari et al.
Janarjan Bhandari et al.
Viewed
HTML | XML | Total | BibTeX | EndNote | |
---|---|---|---|---|---|
810 | 266 | 57 | 1,133 | 54 | 77 |
- HTML: 810
- PDF: 266
- XML: 57
- Total: 1,133
- BibTeX: 54
- EndNote: 77
Viewed (geographical distribution)
Country | # | Views | % |
---|
Total: | 0 |
HTML: | 0 |
PDF: | 0 |
XML: | 0 |
- 1