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Detection of mercuric chloride using a fiber laser

Reichardt, Thomas A.; Hoops, Alexandra A.; Kliner, Dahv A.V.; Koplow, Jeffrey

We demonstrate photofragment emission with a compact fiber-laser source to measure gaseous HgCl2 concentration with the goal of developing a real-time stand-off speciating mercury emissions monitor. Assuming typical flue gas concentrations (74% N2, 12% CO2, 8% H2O, and 6% O2) at 200°C, we calculate a stand-off detection limit of 0.7 ppb for a fieldable monitoring instrument.