Data · dataset · 2026
Formation of highly oxygenated low-volatility products from cresol oxidation
Listed in National Center for Atmospheric Research
Hydroxyl radical (OH) oxidation of toluene produces ring-retaining products: cresol and benzaldehyde, and ring-opening products: bicyclic intermediate compounds and epoxides.
Description
Here, first- and later-generation OH oxidation products from cresol and benzaldehyde are identified in laboratory chamber experiments. For benzaldehyde, first- generation ring-retaining products are identified, but later-eneration products are not detected.
For cresol, low-volatility (saturation mass concentration, C
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- similar to 3.5 x 10(4) -7.7 x 10(-3) mu gm(-3)), first- and later-generation ring-retaining products are identified. Subsequent OH addition to the aromatic ring of o-cresol leads to compounds such as hydroxy, dihydroxy, and trihydroxy methyl benzoquinones and dihydroxy, trihydroxy, tetrahydroxy, and pentahydroxy toluenes. These products are detected in the gas phase by chemical ionization mass spectrometry (CIMS) and in the particle phase using offline direct analysis in real-time mass spectrometry (DART-MS). Our data suggest that the yield of trihydroxy toluene from dihydroxy toluene is substantial. While an exact yield cannot be reported as authentic standards are unavailable, we find that a yield for trihydroxy toluene from dihydroxy toluene of similar to 0.7 (equal to the reported yield of dihydroxy toluene from o-cresol (Olariu et al., idation under low-NO conditions. These results suggest that even though the cresol pathway accounts for only similar to 20% of the oxidation products of toluene, it is the source of a significant fraction (similar to 20-40 %) of toluene secondary organic aerosol (SOA) due to the formation of low- volatility products.
Links
Get the data
- Publisher page n2t.org/ark:/85065/d7mc91t3 ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/formation-of-highly-oxygenated-low-volatility-products… ↗
National Center for Atmospheric Research dataset page
landing page · from data ucar edu
Catalogue records · 1
- CKAN API data.ucar.edu/api/3/action/package_show?id=4dc3dffe-4641-4ef1-b729-405780e08… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
- Inferred from text
- Mass spectrometry 75%
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | 4dc3dffe-4641-4ef1-b729-405780e08d6f | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[modality].local:modality:mass-spectrometry | enrichment · data ucar edu | keyword-concept-rules@1.0.0 | title+description (75%) |
| created_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| description | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /notes |
| publication_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| title | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /title |
| updated_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 |