Electrochemical sensor for gas detection has aromatic or alphatic acid carbonic acids in alkali electrolyte solution

摘要

An electrochemical sensor has measurement (3) and auxiliary (8) electrodes with transition metal salt acid compound, a mediator having aromatic carboxyl acid groups, or aliphatic acid polycarbon acid, such as citric, gluconic or boric acid or an acid group and hydroxyl group in an alkali electrolyte solution (9). An independent claim is also included for the use of the gas sensor to detect sulphur dioxide and hydrogen sulphide.