Changes of hygroscopicity and morphology during ageing of diesel soot
Bibliographic Data
| ID | 15548806 |
|---|---|
| Authors | Torsten Tritscher, Zsófia Jurányi (0000-0002-5798-4798, Paul Scherrer Institute), Maria Martin (0000-0003-1075-7739), Roberto Chirico, Martin Gysel‐Beer (0000-0002-7453-1264, Paul Scherrer Institute), Martin Gysel, Maarten F Heringa, P F DeCarlo (0000-0001-6385-7149, Paul Scherrer Institute), Berko Sierau, Andrê S H Prévôt (0000-0002-9243-8194, Paul Scherrer Institute), E Weingartner (0000-0002-2427-4634, Paul Scherrer Institute), Urs Baltensperger (0000-0003-0079-8713, Paul Scherrer Institute) |
| Year | 2011 |
| Volume | 6 |
| Issue | 3 |
| Pages | 034026-034026 |
| Publication date | 2011-07-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/6/3/034026 |
| OpenAlex | W2056673218 |
| Language | EN |
| Citations received | 1 |
| References cited | 44 |
Soot particles are an important component of atmospheric aerosol and their interaction with water is important for their climate effects.The hygroscopicity of fresh and photochemically aged soot and secondary organic aerosol (SOA) from diesel passenger car emissions was studied under atmospherically relevant conditions in a smog chamber at sub-and supersaturation of water vapor.Fresh soot particles show no significant hygroscopic growth nor cloud condensation nucleus (CCN) activity.Ageing by condensation of SOA formed by photooxidation of the volatile organic carbon (VOC) emission leads to increased water uptake and CCN activity as well as to a compaction of the initially non-spherical soot particles when exposed to high relative humidity (RH).It is important to consider the latter effect for the interpretation of mobility based measurements.The vehicle with oxidation catalyst (EURO3) emits much fewer VOCs than the vehicle without after-treatment (EURO2).Consequently, more SOA is formed for the latter, resulting in more pronounced effects on particle hygroscopicity and CCN activity.Nevertheless, the aged soot particles did not reach the hygroscopicity of pure SOA particles formed from diesel VOC emissions, which are similarly hygroscopic (0.06 <κ H-TDMA < 0.12 and 0.09 <κ CCN < 0.14) as SOA from other precursor gases investigated in previous studies
Ageing · Combustion · Diesel fuel · Morphology (biology · Soot · Air Quality and Health Impacts · Atmospheric chemistry and aerosols · Chemistry · Environmental Science · Materials Science · Vehicle emissions and performance · Geology · Paleontology
| Citations per year | 0.5 |
|---|---|
| Citation span | 2024 - 2024 (1) |
| Highly cited | No |