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Standards Development
This document defines a gas chromatography with flame ionisation detection method for the quantitative analysis of five types of terpenes in biomethane, allowing their monitoring online or offline, and covering the range from 1 μmol/mol to 10 μmol/mol.
Terpenes can interfere with odorisation of natural gas (and biomethane). Hence their content in biomethane need to be monitored. The proposed work item aims at delivering a standard describing the measurement technique of Gas Chromatography with Flame Ionisation Detection (GC-FID). The technique is widely available and can be implemented by laboratories and industry, also those seeking accreditation on the basis of, e.g., ISO/IEC 17025. This GC-FID technique is proposed to be standardised in addition to a standard currently in current development which covers micro gas chromatography with thermal conductivity detection. The additional option of GC-FID will give laboratories and industry flexibility and choice when performing measurement of terpenes and will allow for the adaptation of existing measurement infrastructure for terpenes content measurement.
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