ISO 2611-1:2024 - Analysis of natural gas

Scope: This document specifies a method for the determination of the concentration of hydrochloric acid (HCl) and hydrofluoric acid (HF) in biomethane, after absorption on an alkali-impregnated quartz fibre filtre or in a sorbent trap, by ion chromatography (IC) with conductimetric detection. The method is applicable to biomethane for concentration levels for HCl from 0,07 mg/m3 to 35 mg/m3 and for HF from 0,07 mg/m3 to 20 mg/m3. Unless stated otherwise, all concentrations in this document are given under standard reference conditions (see ISO 13443). Other conditions can be applied. This method is also applicable to biogas. This method is intended to support conformity assessment of biomethane and biogas according to specifications, such as the EN 16723 series.

ISO 2611-1:2024 Referenced Document

ISO 10304-1 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate; Technical Corrigendum 1
ISO 14532 Natural gas - Vocabulary
ISO 3696 Water for analytical laboratory use; Specification and test methods
ISO 6974-1 Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 1: General guidelines and calculation of composition; Technical Corrigendum 1
ISO 6974-2 Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 2: Uncertainty calculations
ISO 6974-3 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 3: Precision and bias
ISO 6976 Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition