标准编号：ISO 2612:2023
中文名称：天然气分析 生物甲烷 可调谐二极管激光吸收光谱法测定氨含量
英文名称：Analysis of natural gas — Biomethane — Determination of ammonia content by tuneable diode laser absorption spectroscopy
发布日期：2023-12
标准范围
This document describes several test methods for measuring the ammonia amount fraction in natural -1 gas and biomethane at the trace level (µmol mol ). The suitable handling and sampling of pressurised mixtures of ammonia in methane that are applied to several different ammonia measurement systems are described. The measurement systems are comprised of readily available commercial spectroscopic analysers that are specific to ammonia. These NH analysers are considered as a black box in terms of their operation, which is dependent on the instructions of the manufacturer. The document describes suitable calibration and measurement strategies to quantify ammonia in (bio)methane around and -3 -1 above the 10 mg m (14 µmol mol ) level and applies to analysis within absolute pressure ranges of 1 bar – 2 bar, temperatures of 0 °C – 40 °C and relative humidity <90 %.
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