Comparative investigation on electrochemical behavior of hydroquinone at carbon ionic liquid electrode, ionic liquid modified carbon paste electrode and carbon paste electrode

Zhang, Ya; Zheng, Jian

doi:10.1016/j.electacta.2007.05.039

Cited by 119 publications

(58 citation statements)

References 39 publications

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“…Particularly, the development of electrochemical sensors has been widely studied as a reliable method to quantitatively detect a large number of organic substances of biological importance, including hydrogen peroxide [1], hydroquinone [2], nicotinamide-adenine dinucleotide (NADH) [3], serotonin [4], glucose [5], dopamine (DA) [6] and ascorbic acid (AA) [7], and so on. Dopamine, the most significant catecholamine, belongs to the family of neurotransmitters and attracts considerable research in clinical research because of its involvement in the immune system, metabolic processes, and emotional processes.…”

Section: Introductionmentioning

confidence: 99%

Polyaniline/AgCl Hybrid Materials for Selective Determination of Dopamine by Electrochemical Methods

Zhou¹,

Xie²,

Yuan³

et al. 2012

AJAC

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A promising electrochemical sensor based on PANI/AgCl hybrid material has been developed. The organic/inorganic hybrid material has exhibited good electrocatalytic properties by cyclic voltammetry measurement and differential pulse voltammetry. The oxidation overpotential of dopamine decreased dramatically, and the oxidation peak current increased significantly at PANI/AgCl/GCE compared to those obtained at PANI/GCE, AgCl/GCE and bare GCE, corresponding to the synergistic effect between PANI and inorganic particle AgCl. Under the optimized conditions, the linear response in the concentration range of 0.7 to 6.0 μM for the selective determination dopamine on the PANI/AgCl/GCE is obtained with a detection limit of 5.4 × 10 -8 M (S/N = 3) using differential pulse voltammetry. The results indicated that the modified electrode can be used to determine dopamine without the interference from ascorbic acid and ensure high sensitivity and good selectivity.

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Section: Introductionmentioning

confidence: 99%

Polyaniline/AgCl Hybrid Materials for Selective Determination of Dopamine by Electrochemical Methods

Zhou¹,

Xie²,

Yuan³

et al. 2012

AJAC

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“…Recently, these traditionally used binders have been totally or partially replaced with ILs, indicating that they offer an attractive and efficient alternative, due to the high ionic conductivity and sensitivity of the resulting electrodes. 9,10,17,18,[30][31][32][33][34][35][36] There are several known hydrophobic ILs and those containing the bis(trifluoromethylsulfonyl)imide (Tf 2 N − ) anion offer several advantages for use in electrochemistry. In relation to the analogous ILs based on the PF 6 − anion they are less viscous, water stable and have good conductivity, excellent thermal stability and a large electrochemical window.…”

Section: Introductionmentioning

confidence: 99%

Biosensors of laccase based on hydrophobic ionic liquids derived from imidazolium cation

Franzoi¹,

Vieira²,

Dupont³

2010

J. Braz. Chem. Soc.

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Biossensores contendo lacase (Aspergillus oryzae) e líquidos iônicos derivados do cátion 1-butil-3-metilimidazol (BMI) associados com os ânions hexafluorfosfato (BMI•PF 6 ) ou bis(trifluormetilsulfonil)imida (BMI•Tf 2 N) foram construídos para determinação de adrenalina. O biossensor baseado no BMI•Tf 2 N foi selecionado por apresentar maior resposta quando comparado ao BMI•PF 6 . As melhores condições para otimização foram estabelecidas por voltametria de onda quadrada (amplitude 100 mV, frequência 10 Hz e incremento 4,0 mV). . The recovery of adrenaline in injectable samples ranged from 96.3 to 101.6%. The results obtained for the adrenaline using the proposed biosensor and the United States Pharmacopeia procedure were in agreement at the 95% confidence level.

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“…Among these methods, electrochemical method is of particular interest due to its high sensitivity, low cost, good selectivity, and rapid detection. For most electrochemical methods, more attention is focused on the simultaneous determination of CC and HQ due to their redox peaks are overlapped at ordinary electrode [12][13][14][15][16][17][18][19][20]. However, the simultaneous determination of HQ, CC, and RS by electrochemical methods is few reported.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, a highly sensitive and selective analytical method is necessary for the simultaneous determination of the three dihydroxybenzene isomers. Up to now, various methods have been exploited for the determination of the dihydroxybenzenes, such as high performance liquid chromatography (HPLC) [3,4], spectrophotometry [5,6] Electrochemiluminescence [7], synchronous fluorescence [8], gas chromatography/mass spectrometry [9], capillary electrochromatography [10], pH-based-flow injection analysis [11], and electrochemical methods [12][13][14][15][16][17][18][19][20][21][22][23]. Among these methods, electrochemical method is of particular interest due to its high sensitivity, low cost, good selectivity, and rapid detection.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Hydroquinone, Catechol and Resorcinol at Graphene Doped Carbon Ionic Liquid Electrode

Zhao

2012

International Journal of Electrochemistry

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A new composite electrode has been prepared with doping graphene into the paste consisting graphite and ionic liquid, n-octyl-pyridinum hexafluorophosphate (OPFP). This electrode shows an excellent electrochemical activity for the redox of hydroquinone (HQ), catechol (CC), and resorcinol (RS). In comparison with bare paste electrode, the redox peaks of three isomers of dihydroxybenzene can be obviously, simultaneously observed at graphene doping paste electrode. Under the optimized condition, the simultaneous determination of HQ, CC, and RS in their ternary mixture can be carried out with a differential pulse voltammetric technique. The peak currents are linear to the concentration of HQ, CC, and RS in the range form 1 × 10 −5 to 4 × 10 −4 , 1 × 10 −5 to 3 × 10 −4 , and 1 × 10 −6 to 1.7 × 10 −4 mol L −1 , respectively. The limits of detection are 1.8 × 10 −6 mol L −1 for HQ, 7.4 × 10 −7 mol L −1 for CC, and 3.6 × 10 −7 M for RS, respectively.

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Comparative investigation on electrochemical behavior of hydroquinone at carbon ionic liquid electrode, ionic liquid modified carbon paste electrode and carbon paste electrode

Cited by 119 publications

References 39 publications

Polyaniline/AgCl Hybrid Materials for Selective Determination of Dopamine by Electrochemical Methods

Polyaniline/AgCl Hybrid Materials for Selective Determination of Dopamine by Electrochemical Methods

Biosensors of laccase based on hydrophobic ionic liquids derived from imidazolium cation

Simultaneous Determination of Hydroquinone, Catechol and Resorcinol at Graphene Doped Carbon Ionic Liquid Electrode

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