Development of Mercury Analyzer for Stack Gas – ENDA-Hg5200 –

By: Koji ISHIKAWA

31 May 2012


We made a design the new mercury analyzer for stack gas, amid mounting international concern over environmental from heavy metal. It was difficult for us to measure the mercury, because gaseous mercury is high reactivity with other material and susceptible to coexistence gas. Especially, existing analyzer had a problem that stability of measurement value was no good. So, we selected the materials at sample line and examined most suitable condition for measurement mercury, and made a design new dry reducing catalyst in the probe unit. And we made a design new hydrogen chloride scrubber for extend the catalyst lifetime. Analyzer uses cold vapor atomic absorption and cross-modulation method, therefore can measure high sensitivity and stability.

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