Development of All-Solid-State Antidiabetic Drug Metformin-Selective Microsensor and Its Electrochemical Applications

Altuntas D.

ELECTROANALYSIS, vol.32, no.6, pp.1280-1287, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 6
  • Publication Date: 2020
  • Doi Number: 10.1002/elan.201900773
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, BIOSIS, Chimica, Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.1280-1287
  • Recep Tayyip Erdoğan University Affiliated: Yes


In this study, all-solid-state type potentiometric PVC membrane selective microsensor was developed for Metformin (MET) which is an antidiabetic drug active substance. Metformin-tetraphenylborate (MET-TPB) ion-pair was used as an ionophore in the structure of the sensor membrane. It was determined that the sensor membrane at the ratio of 69 % o-nitrophenyl octyl ether, 27 % polyvinyl chloride and 4 % MET-TPB performed the best potentiometric performance. In a wide concentration range (1x10(-5)-1x10(-1) mol/L), the slope, detection limit, response time, pH range, and life-time of the sensor were determined as 55.9 +/- 1.6 mV (R-2=0.996), 3.35x10(-6) mol/L, 8-10 s, pH: 3-8, and similar to 10 weeks, respectively. The voltammetric performances of the sensor were also investigated. The prepared microsensor was successfully utilized for the determination of Metformin in a pharmaceutical drug sample by potentiometry and voltammetry. It was observed that the obtained results were in agreement with the results obtained by the UV spectroscopy method at 95 % confidence level.