Electrochemical Detection of Hydrogen Peroxide at High Concentrations Using Hastelloy G35 Electrode

The detection of hydrogen peroxide (H₂O₂) at elevated concentrations while eliminating oxygen interference presents a significant challenge. Nickel-based stainless steel, such as Hastelloy G35, has shown excellent corrosion resistance. However, it has never been used in electroanalysis. In this study, the electrochemical analysis of H₂O₂ was conducted for the first time using nickel-based stainless steel electrode. The Hastelloy G35 electrode exhibited a very wide linear range from 1 up to 1000 mM and a detection limit of 0.0135 mM. The method is free from interference by oxygen. This method effectively detected H₂O₂ in skin wound wash solutions with excellent recoveries. The excellent performance of this method enhances its applicability in various fields, including industrial processes, environmental monitoring, and analytical chemistry, where quantifying concentrated H₂O₂ is of utmost importance. It shows that nickel-based stainless steel is promising for electroanalysis.