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In situ, real-time detection of soot particles coated with NaCl using 193 nm light
| Content Provider | Semantic Scholar |
|---|---|
| Author | Choi, Jong Hyun Stipe, Christopher B. Koshland, Catherine P. Lucas, Donald W. |
| Copyright Year | 2006 |
| Abstract | We report in situ, real-time detection of soot particles coated with NaCl using excimer laser fragmentation fluorescence spectroscopy (ELFFS). Carbon atom fluorescence at 248 nm and the Na D-line at 589 nm are used as signatures of soot and NaCl, respectively. Soot particles are encapsulated with a NaCl layer in a well-controlled inverted flame burner. NaCl particles are injected into the methane-air co-flow flame to coat the soot particles. ArF laser irradiation of the coated particles in an air stream at 1.14 J/cm2 produces fluorescence from Na, C, and CH. At 0.69 J/cm2, which is slightly above the fluorescence threshold, but not enough for considerable fragmentation of the particles, Na D-line persists with little carbon and no CH observed. These results suggest that the photolytic fragmentation-fluorescence using 193 nm excitation can be effectively used for in situ, real-time chemical analysis of core-shell nanoparticles. |
| Starting Page | 385 |
| Ending Page | 388 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s00340-006-2341-8 |
| Alternate Webpage(s) | http://superfund.berkeley.edu/pdfs/06_choi_1.pdf |
| Alternate Webpage(s) | http://superfund.berkeley.edu/pdf/55.pdf |
| Alternate Webpage(s) | https://doi.org/10.1007/s00340-006-2341-8 |
| Volume Number | 84 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
