本文件描述了用于 生物甲烷和沼气中硅氧烷浓度的测定。该方法适用于 表1中提供的硅氧烷和工作范围。 表1-部件工作范围 成分缩写下限（mg m-3）上限（mg m-2） 六甲基二硅氧烷L2 0.1 10.0 八甲基三硅氧烷L3 0.1 10.0 十甲基四硅氧烷L4 0.1 10.0 十二甲基五硅氧烷L5 0.1 10.0 六甲基环三硅氧烷D3 0.1 10.0 八甲基环四硅氧烷D4 0.1 10.0 八甲基环四硅氧烷D5 0.1 10.0 十二甲基环己硅氧烷D6 0.3 10.0

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 %.