Application of polymer electrolyte based hydrogen sensor to study corrosion of carbon steel in acid medium

Hydrogen sensors find extensive application in hydrogen leak detection. These sensors can also be utilized in process monitoring. A fuel cell based room temperature amperometric hydrogen sensor has been developed in our laboratory. This sensor is used to study corrosion of carbon steel (CS) with EAC formulation, which is a mixture of EDTA, ascorbic acid and citric acid. EAC formulation is a recommended chemical formulation to dissolve magnetite formed by corrosion of CS. The paper describes a new method using hydrogen sensor to obtain the rate of corrosion of CS by EAC as a function of time.