Enhanced sensitivity and selectivity of a gas chromatography–microwave-induced plasma atomic emission system (GC-MIP) at the 685.6-nm fluorine emission line
✍ Scribed by Fabio Augusto; Antonio Luiz Pires Valente
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 103 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1040-7685
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✦ Synopsis
As part of the studies for the characterization of a gas chromatography Ž . with microwave-induced plasma atomic emission detection GC-MIP prototype, its behavior at the 685.6-nm fluorine emission line was studied with isooctane solutions of n-perfluoroheptane and benzene. This test mixture was chromatographed under varied conditions of the plasma support helium flow rate and microwave Ž .
4 input power.
A relatively high value of 3.9 " 0.3 = 10 was found for the fluorine Ž . y1 to carbon selectivity, with detection limits for fluorine as low as 1.3 " 0.2 pg F и s . These levels for the selectivity and for the detection limit compare favorably with previous reports found in the literature for other GC-MIP systems.