Characterization and contribution to PM25 of semi-volatile aerosols in Paris (France)
Favez, O; Cachier, H; Sciare, J; Le Moullec, Y
| HERO ID | 141657 |
|---|---|
| In Press | No |
| Year | 2007 |
| Title | Characterization and contribution to PM25 of semi-volatile aerosols in Paris (France) |
| Authors | Favez, O; Cachier, H; Sciare, J; Le Moullec, Y |
| Journal | Atmospheric Environment |
| Volume | 41 |
| Issue | 36 |
| Page Numbers | 7969-7976 |
| Abstract | Collocated PM2.5 measurements using a conventional R&P TEOM (model 1400a) and a TEOM-FDMS were performed at a Paris urban background site during winter/summer field experiments. Results showed that conventional TEOM underestimates PM2.5 mass concentrations by about 50% in winter and 35% in summer. They also confirmed that this negative sampling artifact, due to the volatilization of semi-volatile material (SVM) inside the instrument, cannot be accurately accommodated by a single correction factor because of SVM routine fluctuations. A basic filter-based investigation of the SVM chemical composition also indicated that SVM, measured by the TEOM-FDMS, is mainly formed by ammonium nitrate in winter while significant contributions of semi-volatile organic matter were observed in summer. The latter species was found to possibly account for more than 50% of secondary organic aerosol formed during summer afternoons. These findings call for more investigation of the SVM chemical composition, particularly during the summer season, in Paris and in Europe. (C) 2007 Elsevier Ltd. All rights reserved. |
| Doi | 10.1016/j.atmosenv.2007.09.031 |
| Wosid | WOS:000251829500023 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | semi-volatile material; ammonium nitrate; organic aerosol; TEOM(-FDMS); PM2.5 |
| Is Qa | No |