Electrochemical reduction of at Hg/phosphate electrolyte interface

Mandić, Zoran; Gašparović, Blaženka; Weitner, Zlatko

doi:10.1016/j.jelechem.2005.11.031

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“…For these explained reasons, the proper potential for rhodium nanoparticles modified Poly(Py‐ co ‐APP) film coated pyruvate oxidase immobilized electrode was −0.68 V for phosphate detection. Similar results for the reduction potential of Rh +3 to Rh +2 were reported as −0.65 V and −0.77 V by our previous study and another research groups, respectively [20,40,41].…”

Section: Resultssupporting

confidence: 90%

A Novel Flow‐injection Rhodium Nanoparticles Modified Phosphate Biosensor and its Operation in Artificial Urine

Kilic

2021

Electroanalysis

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A biosensor for phosphate determination with the flow‐injection system was developed using rhodium nanoparticles modified Poly(pyrrole‐co‐[1‐(2‐aminophenyl) pyrrole])/pyruvate oxidase. The biosensor showed a very wide linearity up to 70 mM phosphate concentration compared to previously reports, response time of 4 s., operational stability with a relative standard deviation of 0.009 % and accuracy of 99.4 %±0.949 at a flow rate of 2.0 Ml min.−1 at exactly −0.68 V. Detection limit were calculated to be 21±0.001 μM by preserving 81.1 % of its initial response at the end of 16th days. Artificial urine was analyzed without dilution to investigate biosensor performance.

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Section: Resultssupporting

confidence: 90%