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EVS-EN ISO 2613-2:2023

Analysis of natural gas - Silicon content of biomethane - Part 2: Determination of siloxane content by gas chromatography with ion mobility spectrometry (ISO 2613-2:2023)

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Kehtiv alates 29.12.2023
Alusdokumendid
ISO 2613-2:2023; EN ISO 2613-2:2023
Tegevusala (ICS grupid)
75.060 Maagaas
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Staatus
Kuupäev
Tüüp
Nimetus
29.12.2023
Põhitekst
This document describes a gas chromatography – ion mobility spectroscopy (GC-IMS) method for the determination of the concentration of siloxanes in biomethane. The method is applicable to the following siloxanes:
—     hexamethyldisiloxane (L2);
—     octamethyltrisiloxane (L3);
—     decamethyltetrasiloxane (L4);
—     dodecamethylpentasiloxane (L5);
—     hexamethylcyclotrisiloxane (D3);
—     octamethylcyclotetrasiloxane (D4);
—     decamethylcyclopentasiloxane (D5);
—     dodecamethylcyclohexasiloxane (D6).
This document describes suitable calibration and measurement strategies to quantify siloxanes in (bio)methane around and above the 0,3 mg m-3 (14 µmol mol-1) level and applies to analyses within absolute pressure ranges of 1 bar – 2 bar, temperatures of 0 °C – 40 °C and relative humidity < 90 %.
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