Evaluation of analytical methods for amine related emissions and degradation products in emission and ambient air.

Abstract

This report describes the chemical analysis methods evaluated and available for chemical screening of the CO2 capture process. The methods are designed to cover the entire chemica lrange of compounds by using several specialized sampling and analysis techniques.

Both experience from other technical processes using amines for CO2 capture, literature survey and own theoretical evaluations revealed different chemical compounds as potential pollutants from CO2 capture process at natural gas power plants: amines, substituted amines, amides, nitramines and nitrosamines.

During this initial test phase, two complementary analytical methods have been tested: (1) exposure of adsorbent tubes followed by thermo desorption and analysis by gas chromatography and mass spectrometry (TD-GC/MS) and (2) exposure of impregnated filters followed by extraction and analysis by liquid chromatography and mass spectrometry on a time-of-flight instrument (IF +LC/MS). For both methods real samples and some spiked samples have been used for testing. Both methods can give important information on the existence and concentration of compounds directly emitted or secondarily formed by the CO2 capture process.