Quenching effects in SO2 fluorescence monitoring instruments
Abstract
An evaluation of the technique of determining SO2 concentrations by measuring the SO2 fluorescence excited at the 2100 A region of the SO2 UV spectrum was performed. The quenching effects resulting from O2 concentrations below and CO2 concentrations above ambient levels gave SO2 concentration measurements on the order of 5-10% higher than the reference values. Spanning the instrument with an SO2 in nitrogen span gas resulted in giving readings 30% lower than true values.
- Publication:
-
Environmental Science and Technology
- Pub Date:
- December 1976
- DOI:
- 10.1021/es60123a008
- Bibcode:
- 1976EnST...10.1246J
- Keywords:
-
- Air Pollution;
- Fluorescence;
- Pollution Monitoring;
- Sulfur Dioxides;
- Air Sampling;
- Calibrating;
- Combustion Products;
- Environment Simulation;
- Quenching;
- Spectrum Analysis;
- Ultraviolet Spectra