This document specifies the determination of the concentration of alkanolamines in biomethane. The measurement method involves thermal desorption gas chromatography with flame ionization and/or mass spectrometry detectors (TD-GC-MS/FID). The described method is specifically developed for the analysis of five amine compounds, namely:

—    monoethanolamine (MEA);

—    diglycolamine (DGA);

—    diethanolamine (DEA);

—    N-methyldiethanolamine (MDEA);

—    piperazine (PZ).

Information about the compounds is given in Annex A.