Electrochemical self-assembly of nordihydroguaiaretic acid/Nafion modified electrodes and their electrocatalytic properties for catecholamines and ascorbic acid

Chen, Shen‐Ming; Liu, Meei-Ing

doi:10.1016/j.jelechem.2005.02.005

Cited by 31 publications

(2 citation statements)

References 42 publications

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“…Various modified materials have been modified on various base electrodes to investigate and detect dopamine [10][11][12][13][14]. Zhang et al [15] have modified the acid-treated multi-walled carbon nanotubes (MWNTs) on the surface of gold electrode for selective detection dopamine.…”

Section: Introductionmentioning

confidence: 99%

Sodium dodecyl sulfate-modified carbon paste electrodes for selective determination of dopamine in the presence of ascorbic acid

Zheng

Zhou

2007

Bioelectrochemistry

143

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Section: Introductionmentioning

confidence: 99%

Sodium dodecyl sulfate-modified carbon paste electrodes for selective determination of dopamine in the presence of ascorbic acid

Zheng

Zhou

2007

Bioelectrochemistry

143

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“…Among these methods, electrochemical detection offers several advantages, including low cost, remarkable sensitivity, portability and simple procedure. So some kinds of modified electrodes (Zhao et al 2001a,b;Li et al 2003) have been developed for the determination of epinephrine, such as Nafion modified electrodes (Chen and liu 2005;Guo and Dong 2005) and self-assembled monolayer modified electrodes (Raj and Ohsaka 2001;Chen and Lin 2002;Chen and Peng 2003;Zeng et al 2003). Unfortunately, most modified electrodes used for epinephrine detection have some disadvantages, such as leaching of electron-transfer mediators and the limit in lifetime.…”

Section: Introductionmentioning

confidence: 99%

Preparing of Iridium Oxide Film Modified Microelectrode as an Amperometric Detector in FIA for Determination of Epinephrine

2007

Analytical Letters

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Iridium oxide film modified microelectrode with a tip diameter of 25 mm was constructed using anodically grown iridium oxide film. The iridium oxide film, which was formed at the tip of the iridium wire by cyclic voltammetry in dilute sulfuric acid, showed excellent catalytic activity towards the oxidation of epinephrine. The stability and electrochemical properties of iridium oxide film modified microelectrode along with catalytic oxidation of epinephrine was studied. An oxidation peak was observed at 0.28 V. The electron-transfer number (n) was 2. The iridium oxide film modified microelectrode was used as a detector in flow injection system for determination of epinephrine. Under the optimized conditions, the calibration curve was linear in the concentration range of 1.0 Â 10 28 to 1.0 Â 10 25 mol/l for epinephrine, with a detection limit of 1.0 Â 10 29 mol/l. The iridium oxide film modified microelectrode was used for direct determination of the epinephrine in human serum samples. The flow injection analysis was precise detection method of epinephrine and time saving device.

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Electrochemical Oxidation and Determination of Norepinephrine in the Presence of Ascorbic Acid and Uric Acid at a Poly(Calconcarboxylic Acid)‐Modified Electrode

et al. 2007

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A poly(calconcarboxylic acid) film was prepared originally via electrochemically depositing calconcarboxylic acid (CCA) on a glassy carbon electrode (GCE) by cyclic voltammetry (CV). The polymer showed excellent electrocatalytic activity to the oxidation of norepinephrine and could detect separately ascorbic acid (AA), norepinephrine (NE) and uric acid (UA) in their mixture. Separations of the oxidation peak potentials of NE-AA and UA-AA were 160 and 150 mV, respectively. Using differential pulse voltammetry (DPV), the peak current of NE was linearly dependent on its concentration within the range of 10-300 µmol L -1 . No interference was produced for the determination of NE in the presence of AA and UA. Owing to its good selectivity and robustness, the poly(CCA)-modified GCE was used for the determination of NE in injections with satisfactory results.

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Electrochemical self-assembly of nordihydroguaiaretic acid/Nafion modified electrodes and their electrocatalytic properties for catecholamines and ascorbic acid

Cited by 31 publications

References 42 publications

Sodium dodecyl sulfate-modified carbon paste electrodes for selective determination of dopamine in the presence of ascorbic acid

Sodium dodecyl sulfate-modified carbon paste electrodes for selective determination of dopamine in the presence of ascorbic acid

Preparing of Iridium Oxide Film Modified Microelectrode as an Amperometric Detector in FIA for Determination of Epinephrine

Electrochemical Oxidation and Determination of Norepinephrine in the Presence of Ascorbic Acid and Uric Acid at a Poly(Calconcarboxylic Acid)‐Modified Electrode

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