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Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible?
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| Zeitschriftentitel: | Geophysical Research Letters |
|---|---|
| Personen und Körperschaften: | , , |
| In: | Geophysical Research Letters, 34, 2007, 14 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
|
| Schlagwörter: |
| author_facet |
Grieshop, Andrew P. Donahue, Neil M. Robinson, Allen L. Grieshop, Andrew P. Donahue, Neil M. Robinson, Allen L. |
|---|---|
| author |
Grieshop, Andrew P. Donahue, Neil M. Robinson, Allen L. |
| spellingShingle |
Grieshop, Andrew P. Donahue, Neil M. Robinson, Allen L. Geophysical Research Letters Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? General Earth and Planetary Sciences Geophysics |
| author_sort |
grieshop, andrew p. |
| spelling |
Grieshop, Andrew P. Donahue, Neil M. Robinson, Allen L. 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2007gl029987 <jats:p>This paper discusses the reversibility of gas‐particle partitioning in secondary organic aerosol (SOA) formed from <jats:italic>α</jats:italic>‐pinene ozonolysis in a smog chamber. Previously, phase partitioning has been studied quantitatively via SOA production experiments and qualitatively by perturbing temperature and observing particle evaporation. In this work, two methods were used to isothermally dilute the SOA: an external dilution sampler and an in‐chamber technique. Dilution caused some evaporation of SOA, but repartitioning took place on a time scale of tens of minutes to hours–consistent with an uptake coefficient on the order of 0.001–0.01. However, given sufficient time, <jats:italic>α</jats:italic>‐pinene SOA repartitions reversibly based on comparisons with data from conventional SOA yield experiments. Further, aerosol mass spectrometer (AMS) data indicate that the composition of SOA varies with partitioning. These results suggest that oligomerization observed in high‐concentration laboratory experiments may be a reversible process and underscore the complexity of the kinetics of formation and evaporation of SOA.</jats:p> Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? Geophysical Research Letters |
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| title |
Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_unstemmed |
Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_full |
Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_fullStr |
Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_full_unstemmed |
Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_short |
Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_sort |
is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| topic |
General Earth and Planetary Sciences Geophysics |
| url |
http://dx.doi.org/10.1029/2007gl029987 |
| publishDate |
2007 |
| physical |
|
| description |
<jats:p>This paper discusses the reversibility of gas‐particle partitioning in secondary organic aerosol (SOA) formed from <jats:italic>α</jats:italic>‐pinene ozonolysis in a smog chamber. Previously, phase partitioning has been studied quantitatively via SOA production experiments and qualitatively by perturbing temperature and observing particle evaporation. In this work, two methods were used to isothermally dilute the SOA: an external dilution sampler and an in‐chamber technique. Dilution caused some evaporation of SOA, but repartitioning took place on a time scale of tens of minutes to hours–consistent with an uptake coefficient on the order of 0.001–0.01. However, given sufficient time, <jats:italic>α</jats:italic>‐pinene SOA repartitions reversibly based on comparisons with data from conventional SOA yield experiments. Further, aerosol mass spectrometer (AMS) data indicate that the composition of SOA varies with partitioning. These results suggest that oligomerization observed in high‐concentration laboratory experiments may be a reversible process and underscore the complexity of the kinetics of formation and evaporation of SOA.</jats:p> |
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| author | Grieshop, Andrew P., Donahue, Neil M., Robinson, Allen L. |
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| description | <jats:p>This paper discusses the reversibility of gas‐particle partitioning in secondary organic aerosol (SOA) formed from <jats:italic>α</jats:italic>‐pinene ozonolysis in a smog chamber. Previously, phase partitioning has been studied quantitatively via SOA production experiments and qualitatively by perturbing temperature and observing particle evaporation. In this work, two methods were used to isothermally dilute the SOA: an external dilution sampler and an in‐chamber technique. Dilution caused some evaporation of SOA, but repartitioning took place on a time scale of tens of minutes to hours–consistent with an uptake coefficient on the order of 0.001–0.01. However, given sufficient time, <jats:italic>α</jats:italic>‐pinene SOA repartitions reversibly based on comparisons with data from conventional SOA yield experiments. Further, aerosol mass spectrometer (AMS) data indicate that the composition of SOA varies with partitioning. These results suggest that oligomerization observed in high‐concentration laboratory experiments may be a reversible process and underscore the complexity of the kinetics of formation and evaporation of SOA.</jats:p> |
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| spelling | Grieshop, Andrew P. Donahue, Neil M. Robinson, Allen L. 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2007gl029987 <jats:p>This paper discusses the reversibility of gas‐particle partitioning in secondary organic aerosol (SOA) formed from <jats:italic>α</jats:italic>‐pinene ozonolysis in a smog chamber. Previously, phase partitioning has been studied quantitatively via SOA production experiments and qualitatively by perturbing temperature and observing particle evaporation. In this work, two methods were used to isothermally dilute the SOA: an external dilution sampler and an in‐chamber technique. Dilution caused some evaporation of SOA, but repartitioning took place on a time scale of tens of minutes to hours–consistent with an uptake coefficient on the order of 0.001–0.01. However, given sufficient time, <jats:italic>α</jats:italic>‐pinene SOA repartitions reversibly based on comparisons with data from conventional SOA yield experiments. Further, aerosol mass spectrometer (AMS) data indicate that the composition of SOA varies with partitioning. These results suggest that oligomerization observed in high‐concentration laboratory experiments may be a reversible process and underscore the complexity of the kinetics of formation and evaporation of SOA.</jats:p> Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? Geophysical Research Letters |
| spellingShingle | Grieshop, Andrew P., Donahue, Neil M., Robinson, Allen L., Geophysical Research Letters, Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible?, General Earth and Planetary Sciences, Geophysics |
| title | Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_full | Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_fullStr | Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_full_unstemmed | Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_short | Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_sort | is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| title_unstemmed | Is the gas‐particle partitioning in alpha‐pinene secondary organic aerosol reversible? |
| topic | General Earth and Planetary Sciences, Geophysics |
| url | http://dx.doi.org/10.1029/2007gl029987 |