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Determining modified reaction parameters for the real-time measurement of BTEX in biogas and nitrogen using Selected Ion Flow Tube Mass Spectrometry (SIFT-MS)

Allen, N D C; Perkins, M; Bacquart, T; Li, J R (2019) Determining modified reaction parameters for the real-time measurement of BTEX in biogas and nitrogen using Selected Ion Flow Tube Mass Spectrometry (SIFT-MS). Accreditation and Quality Assurance, 24 (5). pp. 361-368. ISSN 0949-1775

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Abstract

The increasing demand for high quality biogas and the reduction of reliance on natural gas has driven the need for a well-defined framework to ensure conformity and quality of biogas by the introduction of traceable reference materials and methods across the community. Furthermore there is a great need to quantify critical trace impurities in biogas. Here we perform real-time measurements on reference gas standards containing trace hydrocarbons in biogas that are traceable to the international system of units (SI) using Selected Ion Flow Tube Mass Spectrometry (SIFT-MS). There is limited data on reaction rate constants in biogas matrices for SIFT-MS, here we use the traceable gas standards to determine and compare the reaction rate constants of trace hydrocarbons in biogas and nitrogen. Here we redefine SIFT-MS constants for biogas avoiding the current 30 % bias and prevent the overestimation in the concentration of hydrocarbon amount fractions.

Item Type: Article
Keywords: SIFT-MS, biogas, rate constant revision
Subjects: Environmental Measurement > Atmospheric Science, Emission and Security
Divisions: Environment
Identification number/DOI: 10.1007/S00769-019-01394-8
Last Modified: 11 Dec 2019 14:41
URI: http://eprintspublications.npl.co.uk/id/eprint/8589

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