[Detection of minimal ammonia concentrations using the aerosol method]

The study covered possible detection of ammonium microdoses through passing the analyzed gas over some reagents in order to obtain ammonium aerosol then and register concentration of its dispersed phase. The most effective reagent is crystal hydrate of iron nitrate. Using this reagent makes the technique more precise and handy in comparison with the present ones. The sensitivity is 0.01 mg/cu m.