Glyoxal's impact on dry ammonium salts: fast and reversible surface aerosol browning
David O. De Haan,Lelia N. Hawkins,Kevin Jansen,Hannah G. Welsh,Raunak Pednekar,Alexia de Loera,Natalie G. Jimenez,Margaret A. Tolbert,Mathieu Cazaunau,Aline Gratien,Antonin Bergé,Edouard Pangui,Paola Formenti,and Jean-François Doussin
Department of Chemistry and Biochemistry, University of San Diego,
5998 Alcala Park, San Diego, CA 92110, USA
Lelia N. Hawkins
Department of Chemistry, Harvey Mudd College, 301 Platt Blvd,
Claremont, CA 91711, USA
Kevin Jansen
Department of Chemistry/Cooperative Institute for Research in
Environmental Sciences, University of Colorado, Boulder, CO 80309, USA
Hannah G. Welsh
Department of Chemistry, Harvey Mudd College, 301 Platt Blvd,
Claremont, CA 91711, USA
Raunak Pednekar
Department of Chemistry, Harvey Mudd College, 301 Platt Blvd,
Claremont, CA 91711, USA
deceased
Alexia de Loera
Department of Chemistry and Biochemistry, University of San Diego,
5998 Alcala Park, San Diego, CA 92110, USA
Natalie G. Jimenez
Department of Chemistry and Biochemistry, University of San Diego,
5998 Alcala Park, San Diego, CA 92110, USA
Margaret A. Tolbert
Department of Chemistry/Cooperative Institute for Research in
Environmental Sciences, University of Colorado, Boulder, CO 80309, USA
Mathieu Cazaunau
Laboratoire Interuniversitaire des Systèmes Atmosphériques
(LISA), UMR7583, CNRS, Université Paris-Est Créteil (UPEC) et
Université de Paris, Institut Pierre Simon Laplace (IPSL), Créteil,
France
Laboratoire Interuniversitaire des Systèmes Atmosphériques
(LISA), UMR7583, CNRS, Université Paris-Est Créteil (UPEC) et
Université de Paris, Institut Pierre Simon Laplace (IPSL), Créteil,
France
Antonin Bergé
Laboratoire Interuniversitaire des Systèmes Atmosphériques
(LISA), UMR7583, CNRS, Université Paris-Est Créteil (UPEC) et
Université de Paris, Institut Pierre Simon Laplace (IPSL), Créteil,
France
Edouard Pangui
Laboratoire Interuniversitaire des Systèmes Atmosphériques
(LISA), UMR7583, CNRS, Université Paris-Est Créteil (UPEC) et
Université de Paris, Institut Pierre Simon Laplace (IPSL), Créteil,
France
Laboratoire Interuniversitaire des Systèmes Atmosphériques
(LISA), UMR7583, CNRS, Université Paris-Est Créteil (UPEC) et
Université de Paris, Institut Pierre Simon Laplace (IPSL), Créteil,
France
Laboratoire Interuniversitaire des Systèmes Atmosphériques
(LISA), UMR7583, CNRS, Université Paris-Est Créteil (UPEC) et
Université de Paris, Institut Pierre Simon Laplace (IPSL), Créteil,
France
Viewed
Total article views: 1,694 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
Supplement
BibTeX
EndNote
1,107
546
41
1,694
244
32
51
HTML: 1,107
PDF: 546
XML: 41
Total: 1,694
Supplement: 244
BibTeX: 32
EndNote: 51
Views and downloads (calculated since 16 Mar 2020)
Cumulative views and downloads
(calculated since 16 Mar 2020)
Total article views: 1,289 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
Supplement
BibTeX
EndNote
878
382
29
1,289
144
23
38
HTML: 878
PDF: 382
XML: 29
Total: 1,289
Supplement: 144
BibTeX: 23
EndNote: 38
Views and downloads (calculated since 17 Aug 2020)
Cumulative views and downloads
(calculated since 17 Aug 2020)
Total article views: 405 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
Supplement
BibTeX
EndNote
229
164
12
405
100
9
13
HTML: 229
PDF: 164
XML: 12
Total: 405
Supplement: 100
BibTeX: 9
EndNote: 13
Views and downloads (calculated since 16 Mar 2020)
Cumulative views and downloads
(calculated since 16 Mar 2020)
Viewed (geographical distribution)
Total article views: 1,694 (including HTML, PDF, and XML)
Thereof 1,754 with geography defined
and -60 with unknown origin.
Total article views: 1,289 (including HTML, PDF, and XML)
Thereof 1,333 with geography defined
and -44 with unknown origin.
Total article views: 405 (including HTML, PDF, and XML)
Thereof 421 with geography defined
and -16 with unknown origin.
When exposed to glyoxal in chamber experiments, dry ammonium or methylammonium sulfate particles turn brown immediately and reversibly without increasing in size. Much less browning was observed on wet aerosol particles, and no browning was observed with sodium sulfate aerosol. While estimated dry aerosol light absorption caused by background glyoxal (70 ppt) is insignificant compared to that of secondary brown carbon overall, in polluted regions this process could be a source of brown carbon.
When exposed to glyoxal in chamber experiments, dry ammonium or methylammonium sulfate particles...
