Abstract
The effect of make-up gas was studied for capillary gas chromatography (GC) coupled with on-column atomic emission spectrometric detection (AED), where a 350 kHz plasma was sustained inside the end of a 0.32 mm i.d. capillary GC column. For selective detection of Cl and Br both the plasma background characteristics and elemental responses were stabilized during temperature programmed analysis when 10-15 ml min-1 of helium were added as a make-up gas. In addition, Chromatographic peaks were protected against tailing, while Cl and Br were detected at the 4 pg s-1 level.
| Original language | English |
|---|---|
| Journal | Journal of Analytical Atomic Spectrometry |
| Volume | 11 |
| Issue number | 2 |
| Pages (from-to) | 117-121 |
| Number of pages | 5 |
| ISSN | 0267-9477 |
| DOIs | |
| Publication status | Published - Feb 1996 |
Keywords
- Atomic emission spectrometric detection
- Capillary gas chromatography
- Make-up gas
- On-column radiofrequency plasma
- Selective detection of chlorine and bromine