2 research outputs found
A new detection tube to detect hydrogen cyanide in the air
A new simple and sensitive detection tube to detect hydrogen cyanide in the
air has been developed. The detection tube is based on the reaction of
hydrogen cyanide with 4-nitrobenzil to form a violet colored product. The
reaction takes place on the carrier made of a composite material which was
prepared by pelletization of a mixture of microcrystalline cellulose and
MgO. The detection tube can detect hydrogen cyanide in the air in the range
of concentrations 0.1-100 mg.m-3 based on visual evaluation (by naked eye)
of the change of indication layer coloring and comparison with etalon. The
detection limit is 0.05 mg.m-3. The detection tube is highly selective and
sufficiently stable during storage