Open AccessA new detection tube to detect hydrogen cyanide in the air
Author(s) -
Vladimír Pitschmann,
Zbyněk Kobliha,
Ivana Tušarová,
Lucie Bártová,
David Vetchý,
Pavel Bobáľ
Publication year - 2012
Publication title -
chemical industry and chemical engineering quarterly
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.189
H-Index - 26
eISSN - 2217-7434
pISSN - 1451-9372
DOI - 10.2298/ciceq120504118p
Subject(s) - detection limit , microcrystalline cellulose , naked eye , tube (container) , cyanide , cellulose , hydrogen cyanide , fabry–pérot interferometer , chemistry , materials science , hydrogen , analytical chemistry (journal) , chromatography , chemical engineering , inorganic chemistry , composite material , organic chemistry , optoelectronics , wavelength , engineering
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
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