method for measuring and controlling the concentration of an electrolytically active species in an aqueous or non-aqueous solution and apparatus for measuring and controlling the concentration of an electrolytically active species in an aqueous or non-aqueous solution

摘要

summary "method for measuring and controlling the concentration of an electrolytically active species in an aqueous or non-aqueous solution and apparatus for measuring and controlling the concentration of an electrolytically active species in an aqueous or non-aqueous solution" provides a method for measuring a concentration of electrolytically active species in an aqueous or non-aqueous solution for use in providing concentration control of the species in a source solution thereof based on measurements. In the method, a sample containing an electrolytically active species in the measuring cell having a working electrode and an auxiliary electrode is added, and a constant current is applied to the measuring cell while the working and auxiliary electrodes are in contact with the electrode. sample with voltage difference monitoring across the electrodes until a change in voltage difference is detected. A feedback signal is generated based on a parameter of the change in voltage difference that is directly proportional to the amount of electrolytically active species in the sample that can be used for process control, an apparatus is also described. 1/1