International Journal Of Electrochemical Science, vol.16, pp.1-10, 2021 (Peer-Reviewed Journal)
A highly sensitive phosphate selective electrode (ISE) was fabricated using Ba3PO4, Cu2S and Ag2S
solids. The highest sensitivity of ISE was obtained with 20% Ba3PO4 (m/m) composition. The ISE shows
a slope of about 57 mV towards the phosphate ion in the concentration range 1x10-1 M - 1x10-6 M. The
ISE characterization was performed. The ISE was judged to be accurate in the presence of possible
interfering ions. The amount of phosphate in foods was measured as real sample analysis and the
proposed ISE was accepted as a reliable, sensitive and easy-to-make sensor device for phosphate analysis
in food samples.