Analysis of natural gas - Silicon content of biomethane - Part 2: Determination of siloxane content by gas chromatography with ion mobility spectrometry
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 %.
| SDO | ISO: International Organization for Standardization |
| Document Number | ISO 2613 |
| Publication Date | Dec. 1, 2023 |
| Language | en - English |
| Page Count | |
| Revision Level | |
| Supercedes | |
| Committee | ISO/TC 193/SC 1 |
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