The effect of interfering compounds in the fluorescence detection of SO2
Abstract
The fluorescence method of SO2 detection, though rapid and sensitive for measuring very low levels of SO2, suffers drastically from interfering compounds present in the ambient. This paper details some investigations in characterizing these interfering compounds and the techniques developed to minimize these interferences and make the method a viable analytical technique. The magnitude of interference from CO, CO2, NOx, common organic solvents and many hydrocarbons - single and complex aromatics, and polynuclear aromatics - was investigated. Though a 'typical' interfering compound could not be isolated in the ambient air, the thrust of the investigations yielded data suggesting the prime role of the polynuclear aromatics even if present only at very low trace levels.
- Publication:
-
Sensing of Environmental Pollutants
- Pub Date:
- 1978
- Bibcode:
- 1978sep..conf..112G
- Keywords:
-
- Air Pollution;
- Fluorescence;
- Gas Analysis;
- Gas Mixtures;
- Pollution Monitoring;
- Spectroscopic Analysis;
- Sulfur Dioxides;
- Air Purification;
- Hydrocarbons;
- Trace Contaminants;
- Ultraviolet Radiation;
- Instrumentation and Photography