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FTIR and GC as complementary tools for analysis of corrosive gases

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Abstract

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 (SO2) 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 SO2 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.

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Authors and Affiliations

  1. National Metrology Institute of South Africa (NMISA), Private Bag X34, Lynnwood Ridge, Pretoria, 0040, South Africa

    James Tshilongo, Angelique Botha, Mellisa Janse van Rensburg, Nompumelelo Leshabane & Napo Godwill Ntsasa

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  1. James Tshilongo
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  2. Angelique Botha
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  3. Mellisa Janse van Rensburg
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  4. Nompumelelo Leshabane
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  5. Napo Godwill Ntsasa
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Correspondence to James Tshilongo.

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Tshilongo, J., Botha, A., Janse van Rensburg, M. et al. FTIR and GC as complementary tools for analysis of corrosive gases. Accred Qual Assur 14, 655–663 (2009). https://doi.org/10.1007/s00769-009-0602-z

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  • DOI: https://doi.org/10.1007/s00769-009-0602-z

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