University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Classification: Fruit -> pear -> juice

Citations 1

"Voltammetric Behaviour And Ion-chromatographic Detection Of Nitrite At A Dispersed-platinum Glassy-carbon Electrode"
Electroanalysis 1997 Volume 9, Issue 8 Pages 596-601
Innocenzo G. Casella*, Anna M. Salvi

Abstract: The electrode was prepared by depositing 10 µL of 10 mM PtCl4 onto the surface of a glassy carbon electrode and drying at 40°C for 30 min. The electrode was conditioned in 0.1 M NaH2PO4 by cycling the potential between -0.3 and 1.3 V using a SCE reference electrode and a Pt foil counter electrode. Cyclic voltammograms were recorded over the same potential range at a scan rate of 50 mV/s. No significant interferences were observed in the presence of SDS, BSA, chloride, glycine, acetaldehyde, nitrate, sulfate, acetate and lactose. The electrode was used as an amperometric sensor for FIA systems and ion-chromatographic separations using an applied potential of 1.1 V. The detection limit was 15 nM. Calibration graphs were linear up to 0.5 mM. The method was used for the analysis of milk and pear juice. Recoveries were >85%.
Nitrite Amperometry Electrode Electrode Voltammetry Interferences