Monitoring of Acrylonitrile

Acrylonitrile is one of the vapours which is difficult to detect at low levels.  Many  gas detectors for acrylonitrile show cross sensitivities to solvents like acetone. Detection of acrylonitrile The detection of acrylonitrile can be performed using an electrochemical sensor. Most suppliers of gas detectors use a direct method in which a ‘common solvent’ sensor is used to detect the acrylonitrile vapour. Measuring range is 0-20 ppm or smaller It is difficult to provide the necessary selectivity using the direct method. The measuring range is often not smaller than 0-100 ppm. With a large measuring range it will be difficult or even impossible to generate an accurate gas alarm at TLV level which is 2 ppm. Bionics Instrument uses the Combined Electrochemical Cell (CEC) technique to detect acrylonitrile. By using this technique the detector shows no cross sensitivity to common solvents like acetone. The standard measuring range is 0-20 ppm and for some applications even smaller ranges can be supplied. For more information on the detector please consult the brochure:  Eur83-EXW-v19-web.pdf 1.33 Mb