A simple and rapid method for measuring dissolved oxygen in waters with gold microelectrode

作者：Chen You Peng; Liu Shao Yang; Yu Han Qing^*

来源：Analytica Chimica Acta, 2007, 598(2): 249-253.

DOI：10.1016/j.aca.2007.07.045

• dissolved oxygen
• first derivative linear sweep voltammetry
• microelectrode
• scan rate
• surface area
• water

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.

• 出版日期2007-8-29
• 单位中国科学技术大学