Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) measurements were carried out with a PalmSens3 potentiostat/galvanostat (PalmSens BV, Houten, The Netherlands) and CHI 660B (CH Instruments, Inc., Austin, TX, USA). A conventional three-electrode system, consisting of glassy carbon working electrode (MF-2012, 3.0 mm diameter; BASi, West Lafayette, IN, USA), Ag/AgCl reference electrode (MF- -2052; BASi) and platinum wire auxiliary electrode (MW-1032; BASi), was used. Moreover, Agilent 1200 series HPLC system (Agilent Technologies, Inc., Santa Clara, CA, USA) was used for Sudan 1 chromatographic analysis on the ACE C18 (250 mm×4.6 mm) column (Advanced Chromatography Technologies Ltd, Aberdeen, UK), with a mobile phase consisting of methanol/acetonitrile (40:60, by volume) and a constant flow rate of 0.5 mL/min. The injection volume was 10 μL and the column temperature was set at 25 °C. Finally, the wavelength was set at 254 nm for quantitative analysis.
Chi 660b
Manufactured by CH Instruments
Sourced in United States
The CHI 660B is a potentiostat/galvanostat instrument designed for electrochemical measurements. It provides precise control and monitoring of voltage, current, and charge during electrochemical experiments.
Automatically generated - may contain errors
Lab products found in correlation
Mf 2052, by Bioanalytical Systems (1 mentions)
Mw 1032, by Bioanalytical Systems (1 mentions)
Mf 2012, by Bioanalytical Systems (1 mentions)
Agilent 1200 series hplc system, by Agilent Technologies (1 mentions)
Palmsens3 potentiostat galvanostat, by PalmSens (1 mentions)
Ft ir 4600, by Jasco (1 mentions)
2 protocols using chi 660b
1
Electrochemical and HPLC Analysis of Sudan 1
2
Electroanalytical Measurements on Modified Pencil Graphite Electrodes
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The electroanalytical measurements were carried out using a CHI 660B potentiostat (CH Instruments Inc., Austin, TX, USA) with a portable three-electrode assembly. Pencil graphite (2.4 mm × 40 mm with disc area of 0.044 cm2) (PGE), pre-anodized pencil graphite electrode (APGE), and pre-anodized pencil graphite electrode on the poly(thionine) (APGE/PTH) electrode were used for the working electrodes and, platinum wire and silver/silver chloride (3 M KCl) were used as auxiliary and reference electrodes, respectively. All potentials were measured using this reference electrode. Electrochemical impedance spectroscopy (EIS) measurements were carried out in the frequency range from 0.1 Hz to 100 kHz in 5 mmol/L of K3/4[Fe(CN)6] in 0.1 mol/L of KCl solution with the following EIS amplitude of 5 mV and AC bias of 0.26 V. The functional group of APGE and APGE/PTH electrodes were confirmed using FT-IR spectra obtained from JASCO FT-IR-4600 (Tokyo, Japan).
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