The ion-selective measurement of cyanide is based on the use of a cyanide-specific electrode (
ISE) and a reference electrode. The hydrogen cyanide gas dissolved in the sample generates an electromotive force between the two electrodes, which is proportional to the concentration of the hydrogen cyanide gas. Since there is a chemical equilibrium between hydrogen cyanide gas and cyanide, the concentration of cyanide in the sample can be determined. As this equilibrium is temperature and pH-dependent, this type of measurement is based on a measurement environment that is as stable as possible. Therefore, please specify the measurement conditions in your inquiry, and other substances such as other ions can also affect the measurement. If possible, please indicate the conditions in the sample stream in your inquiry. For many measurement applications, however, it is advantageous if a quick measurement can be made directly in the sample stream, instead of a complex measurement using reagents. The CNBM-160 cyanide transmitter and measuring device is excellently suited for this purpose.
