Gas measuring device and method for measuring cyanogen in the presence of hydrogen cyanide

A process for measuring cyanogen in the presence of hydrogen cyanide, wherein the process comprises:

• providing a gas measuring device comprising a measuring chamber configured to receive a sample, a heating element configured to thermally decompose the cyanogen contained in the sample into decomposition products, an electrochemical sensor configured to detect the decomposition products of the cyanogen, which are obtained by the thermal decomposition, and a surface configured to act as a catalyst during the thermal decomposition of the cyanogen, wherein the surface comprises at least one material selected from the group consisting of platinum, palladium, ruthenium, rhodium, iridium, and osmium, wherein the measuring chamber comprises a filter unit that is permeable to the cyanogen and is impermeable to the hydrogen cyanide;
• feeding the sample into the measuring chamber of the gas measuring device;
• thermally decomposing the cyanogen present in the sample by means of the heating element of the gas measuring device;
• and
• detecting the decomposition products of the cyanogen, which are generated by the thermal decomposition, by means of the electrochemical sensor of the gas measuring device.

A gas measuring device for measuring an indication of cyanogen in a sample, the gas measuring device comprising:

• a measuring chamber configured to receive the sample;
• a heating element operatively disposed relative to the measuring chamber and configured to thermally decompose the cyanogen contained in the sample into decomposition products;
• a catalytic surface operatively disposed relative to the measuring chamber and configured to act as a catalyst during the thermal decomposition of the cyanogen, the catalytic surface comprising a material selected from the group consisting of platinum, palladium, ruthenium, rhodium, iridium, and osmium;
• and
• an electrochemical sensor operatively disposed relative to the measuring chamber and configured to detect one or more of the decomposition products of the cyanogen, which are obtained by the thermal decomposition.