Journal article
Detection of atmospheric pollutants by direct analysis of passive Fourier transform infrared interferograms
Analytical chemistry (Washington), Vol.60(3), pp.264-269
02/01/1988
DOI: 10.1021/ac00154a016
PMID: 3354837
Abstract
Methodology is developed that allows Interferograms from a passive Fourier transform Infrared (FTIR) spectrometer to be analyzed directly. With a digital filtering approach, a set of generalized procedures Is developed for real-time monitoring of atmospheric pollutants. These procedures allow the spectrometer to be mobile, overcoming problems associated with changing spectral backgrounds and with severe data processing requirements. The methodology allows customized digital filters to be developed that remove information from the Interferogram except that associated with frequencies characteristic of a target chemical species of interest. To test the methodology, a fitter Is derived that Is specific for SF6. With the use of a passive FTIR Instrument mounted in a helicopter, several passes are made by a ground source of SF6, thereby simulating the action of a mobile pollution monitoring system. Interferograms collected during this experiment are used to evaluate the computed fitter.
Details
- Title: Subtitle
- Detection of atmospheric pollutants by direct analysis of passive Fourier transform infrared interferograms
- Creators
- Gary W SmallRobert T KroutilJohn T DitilloWilliam R Loerop
- Resource Type
- Journal article
- Publication Details
- Analytical chemistry (Washington), Vol.60(3), pp.264-269
- Publisher
- American Chemical Society
- DOI
- 10.1021/ac00154a016
- PMID
- 3354837
- ISSN
- 0003-2700
- eISSN
- 1520-6882
- Language
- English
- Date published
- 02/01/1988
- Academic Unit
- Chemistry
- Record Identifier
- 9984216570102771
Metrics
10 Record Views