FTIR and GC as complementary tools for analysis of corrosive gases

The gas metrology laboratory of the National Metrology Institute of South Africa has developed methodology for the gravimetric preparation of corrosive gas mixtures such as nitric oxide (NO) in nitrogen, as well as sulphur dioxide (SO 2 ) in nitrogen or synthetic air. Fourier transform infrared (FTI...

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Bibliographic Details
Published in:Accreditation and quality assurance 2009-12, Vol.14 (12), p.655-663
Main Authors: Tshilongo, James, Botha, Angelique, Janse van Rensburg, Mellisa, Leshabane, Nompumelelo, Ntsasa, Napo Godwill
Format: Article
Language:English
Subjects:
Analytical Chemistry
Biochemistry
Calibration
Carbon dioxide
Chemical and thermal methods
Chemistry
Chemistry and Materials Science
Chromatographic methods and physical methods associated with chromatography
Commercial Law
Ecotoxicology
Exact sciences and technology
Food Science
Fourier transforms
Gas analysis
Gas chromatographic methods
Gas chromatography
Gas detectors
Gas mixtures
Gases
General Paper
Infrared analysis
Infrared radiation
Infrared spectroscopy
Marketing
Mercury cadmium telluride
Metrology
Nitric oxide
Nitrogen dioxide
Quantitative analysis
Software
Spectrometric and optical methods
Spectroscopic analysis
Spectrum analysis
Sulfur dioxide
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Summary:The gas metrology laboratory of the National Metrology Institute of South Africa has developed methodology for the gravimetric preparation of corrosive gas mixtures such as nitric oxide (NO) in nitrogen, as well as sulphur dioxide (SO 2 ) in nitrogen or synthetic air. Fourier transform infrared (FTIR) spectroscopy has been used to analyse for trace and ultra trace levels of infrared active gaseous species, such as NO, nitrogen dioxide and SO 2 that are difficult to analyse by other means. These corrosive gas mixtures are also analysed using gas chromatography with pulsed helium ionisation detection to complement the work done using FTIR with infrared active impurities. A comparison between the techniques of FTIR, gas chromatography and non-dispersive infrared spectroscopy for corrosive gas analysis is also presented.
ISSN:0949-1775
1432-0517
DOI:10.1007/s00769-009-0602-z