Abstract
A high-temperature pulsed slit nozzle, consisting of a circular pulsed nozzle and an interface to convert a circular flow into a slit flow has been constructed. The absorption spectrum is measured by scanning the wavelength of the monochromator equipped with a xenon arc lamp and by detecting the transmitted light through a jet with a photomultiplier. A rotationally cooled spectrum is clearly observed for aniline only when a long slit nozzle is employed. The absorptivity increases proportionally to the slit length at least up to 6 cm. The time for recording a spectrum is 3.5 min, which is reduced to several seconds by transmitting a white light through a jet and by measuring the spectrum with an optical multichannel analyzer. The detection limit is estimated to a partial vapor pressure of 0.4 torr for aniline. The present system can be conveniently used in routine analysis, because of a wide spectral coverage of the lamp source.
| Original language | English |
|---|---|
| Pages (from-to) | 1933-1936 |
| Number of pages | 4 |
| Journal | Talanta |
| Volume | 41 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1994 Nov |
| Externally published | Yes |
ASJC Scopus subject areas
- Analytical Chemistry