title: Development of poly(3-aminophenylboronic acid) modified graphite rod electrode suitable for fluoride determination.
abstract: Poly(3-aminophenylboronic acid), (PAPBA) film was formed on the graphite rod surface by potential cycling. The PAPBA-modified graphite rod (PAPBA/GR) electrode prepared in this way was used for potentiometric fluoride determination. The linear calibration range was from 5×10(-4) to 5×10(-2)M with the slope of the linear part of the calibration curve of 42.5mV/logC. No interference effect of the most common ions such as sodium, potassium, chloride, nitrate, iodide, calcium, zinc, aluminum, sulfate and sorbitol was observed during electrochemical determination of fluoride. On the other hand, the PAPBA/GR electrode showed not only good sensitivity and selectivity, but also relatively rapid response to changes of analyte concentrations in the range of 20s. The sensor was successfully applied for fluoride determination in real sample - toothpaste.
authors.affiliation: Kirikkale University, Kirikkale Vocational High School, Department of Chemistry and Chemical Processing Technologies, Kirikkale, Turkey; Vilnius University, Faculty of Chemistry, NanoTechnas - Centre of Nanotechnology and Materials Science, Vilnius, Lithuania.
authors.forename: Hakan
authors.initials: H
authors.lastname: Ciftçi
authors.affiliation: Vilnius University, Faculty of Chemistry, NanoTechnas - Centre of Nanotechnology and Materials Science, Vilnius, Lithuania; Vilnius University, Faculty of Chemistry, Department of Physical Chemistry, Vilnius, Lithuania; Selcuk University, Faculty of Science, Department of Chemistry, Konya, Turkey.
authors.forename: Yasemin
authors.initials: Y
authors.lastname: Oztekin
authors.affiliation: Gazi University, Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkey.
authors.forename: Uğur
authors.initials: U
authors.lastname: Tamer
authors.affiliation: Vilnius University, Faculty of Chemistry, NanoTechnas - Centre of Nanotechnology and Materials Science, Vilnius, Lithuania.
authors.forename: Almira
authors.initials: A
authors.lastname: Ramanavicine
authors.affiliation: Vilnius University, Faculty of Chemistry, NanoTechnas - Centre of Nanotechnology and Materials Science, Vilnius, Lithuania; Vilnius University, Faculty of Chemistry, Department of Physical Chemistry, Vilnius, Lithuania. Electronic address: arunas.ramanavicius@chf.vu.lt.
authors.forename: Arunas
authors.initials: A
authors.lastname: Ramanavicius
keywords: Conducting polymer; Fluoride; Ion-selective electrode; Poly(3-aminophenylboronic acid); Potentiometry