Fast and stable real time monitoring of gaseous mercury in its catalytic oxidation using a fully modified cold-vapor atomic absorption mercury analyzer

Atomic spectrometry update – a review of advances in environmental analysis

“…More recently, the installation of additional clean-up technologies, such as NH 3 -based selective catalytic reduction (NH 3 -SCR) systems designed to convert NO x to harmless N 2 and H 2 O emissions, has raised the question of whether such systems affect Hg emission and speciation. In a simulation study, a commercially-available CV-AAS instrument was modified 33 to facilitate real-time Hg 0 measurements in harsh experimental conditions that involved passing various gas mixtures over an operational SCR bed. Whereas 66% of GEM was converted to GOM in the presence of 10 ppmv HCl, the conversion was minimal in the presence of NO and NH 3 .…”