Abstract
Diesel engines are known to create large amounts of particulate matter and PAH and their derivatives. The applicability of Laser Desorption Ionization Time of Flight MS (LDIYOF/MS) as a rapid screening method in the analysis of particulate matter was investigated. Diesel soot samples were collected from an experimental injection one cylinder diesel engine aspirated at normal pressure. Reformulated California grade diesel fuel was used in the experiment. Positive ion mass spectra for diesel five particle size ranges from < 0.7 to > 2.5μm in dia showed that low mass peaks (identified as PAH) were more abundant in particles > 2.5μm, than particles < 0.07μm. High mass PAH was associated with fine particulate. Only the smallest particles had significant amounts of PAH with mass greater than 400 amu. Negative mass ion spectra for the same particle size range revealed inorganic ions OH -, Cl -, NO 2 -, and NO 3 -. Very fine particles < 0.07μm showed significantly higher HSO 4 - than any of the spectra for larger particles.
| Original language | English (US) |
|---|---|
| Title of host publication | ACS Division of Fuel Chemistry, Preprints |
| Pages | 294-298 |
| Number of pages | 5 |
| Volume | 45 |
| Edition | 2 |
| Publication status | Published - 2000 |
| Event | 219th ACS National Meeting - San Francisco, CA, United States Duration: Mar 26 2000 → Mar 30 2000 |
Other
| Other | 219th ACS National Meeting |
|---|---|
| Country | United States |
| City | San Francisco, CA |
| Period | 3/26/00 → 3/30/00 |
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Keywords
- Diesel soot
- Polycyclic aromatic hydrocarbons
- Time of flight mass spectrometry
ASJC Scopus subject areas
- Energy(all)