Rapid Determination of Hydrogen Peroxide in Milk with Non-enzymatic Amperometric Sensor Based on Porous Gold Modified Screen-printed Electrode in Online Dialysis System

Chakkarin Maksuk, Chonnatee Tinala, Wasin Somboot, Jaroon Jakmunee, Frank Marken, Tinakorn Kanyanee

Research output: Contribution to journalArticlepeer-review

Abstract

A rapid method for determination of hydrogen peroxide based on a non-enzymatic amperometric sensor with an online dialysis unit was developed for analysis of sample with complicated matrices. A porous gold modified gold screen-printed electrode was prepared by a simple method using 9 V-battery electrodeposition. Based on data from amperometry, a linear dynamic range can be obtained in the range of 10 to 1000 μmol L−1, with a limit of detection of 0.37 μmol L−1. The proposed system was successfully applied to determine H2O2 in various milk samples with rapid analysis, high electrode stability, and excellent repeatability (1.95 % RSD with 100 replications).

Original languageEnglish
JournalElectroanalysis
Early online date12 Jun 2022
DOIs
Publication statusE-pub ahead of print - 12 Jun 2022

Keywords

  • Hydrogen peroxide
  • Non-enzymatic
  • Online dialysis
  • Porous gold

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

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