Collect. Czech. Chem. Commun. 1997, 62, 609-619

Conductimetric Gas Separation-Flow Injection Determination of Ammonia in Gaseous Process Streams

Vlastimil Kubáň

Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, 613 00 Brno, Czech Republic


Ammonia (up to 0.3 vol.%) can be determined (RSDs < 2%) after separation from a process gas stream containing (vol.%): carbon dioxide (0.3-20), hydrogen sulfide (< 0.4), hydrogen cyanide (< 1.5 . 10-4), sulfur dioxide (1), carbon monoxide (< 3) in 50-90 vol.% nitrogen and hydrocarbons. The ammonia content in sample is determined through changes in the conductivity of an acceptor stream (3 mM boric acid) caused by absorption of the analyte passed through a Nafion capillary membrane.

Keywords: Flow injection analysis; Ammonia; Conductimetry; Process analysis; Gas analysis.