title: A simple and rapid method for measuring dissolved oxygen in waters with gold microelectrode.
abstract: Dissolved oxygen (DO) is an essential indicator in chemical, biological and biochemical processes and needs to be rapidly measured in many cases. In this work, a rapid, sensitive and simple electrochemical method, first derivative linear sweep voltammetry (FD-LSV), was established for the determination of DO. The peak height of FD-LSV was found to be influenced by scan rate and microelectrode surface area. An empirical formula was proposed to describe the relationship between the FD-LSV peak height and the influencing factors. Compared with other electrochemical methods for DO determination, the FD-LSV method needed lesser time and was more accurate. This method was successfully applied for the determination of the DO levels of various environmental water samples.
authors.affiliation: Department of Chemistry, University of Science & Technology of China, Hefei 230026, China.
authors.forename: You-Peng
authors.initials: YP
authors.lastname: Chen
authors.forename: Shao-Yang
authors.initials: SY
authors.lastname: Liu
authors.forename: Han-Qing
authors.initials: HQ
authors.lastname: Yu
mesh_terms: D004563:Electrochemistry; D004566:Electrodes; D005618:Fresh Water / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D008832:Microchemistry; D010100:Oxygen / Q000032:analysis* / Q000737:chemistry*; D013997:Time Factors
chemical_list: D006046:Gold; D010100:Oxygen