| 苯甲酰二茂铁修饰碳纳米管糊电极电催化测量蛋氨酸浓度(英文) |
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| 作者姓名： | Hadi BEITOLLAHI Alireza MOHADESI Farzaneh GHORBANI Hassan KARIMI MALEH Mehdi BAGHAYERI Rahman HOSSEINZADEH |
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| 作者单位： | Environment Department,Institute of Science and High Technology and Environmental Sciences,Graduate University of Advanced Technology;Department of Chemistry,Payame Noor University;Department of Chemistry,Graduated University of Advanced Technology;Department of Chemistry,Faculty of Science,Hakim Sabzevari University;Department of Organic Chemistry,Faculty of Chemistry,University of Mazandaran |
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| 摘 要： | A benzoylferrocene modified multi‐wall carbon nanotube paste electrode for the measurement of methionine (MET) concentration is described. MET electrochemical response characteristics of the modified electrode in a phosphate buffer solution of pH 7.0 were investigated by cyclic voltammetry, square wave voltammetry, and chronoamperometry. Under optimized conditions, the square wave voltammetric peak current of MET increased linearly with MET concentration in the range of 1.0×107 to 2.0×104 mol/L. The detection limit was 58.0 nmol/L MET. The diffusion coefficient (D=5.62×106cm2/s) and electron transfer coefficient (α=0.4) for MET oxidation were also determined. The sensor was successfully applied for the measurement of MET concentration in human urine.
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| 关 键 词： | Methionine Electrocatalysis Carbon nanotube Chemically modified electrode Voltammetry Benzoylferrocene |
| 收稿时间： | 2013-02-07 |
Electrocatalytic measurement of methionine concentration with a carbon nanotube paste electrode modified with benzoylferrocene |
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| Hadi BEITOLLAHI,Alireza MOHADESI,Farzaneh GHORBANI,Hassan KARIMI MALEH,Mehdi BAGHAYERI,Rahman HOSSEINZADEH.Electrocatalytic measurement of methionine concentration with a carbon nanotube paste electrode modified with benzoylferrocene[J].Chinese Journal of Catalysis,2013,34(7):1333-1338. |
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| Authors: | Hadi BEITOLLAHI a Alireza MOHADESI b Farzaneh GHORBANI b Hassan KARIMI MALEH c Mehdi BAGHAYERI d Rahman HOSSEINZADEH e a Environment |
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| Institution: | Department of Chemistry, Payame Noor University, 19395‐4697, Tehran, Iran c Department of Chemistry, Graduated University of Advanced Technology, Kerman, Iran d Department of Chemistry, Faculty of Science, Hakim Sabzevari University, PO Box 397, Sabzevar, Iran e Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran |
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| Abstract: | A benzoylferrocene modified multi-wall carbon nanotube paste electrode for the measurement of methionine (MET) concentration is described. MET electrochemical response characteristics of the modified electrode in a phosphate buffer solution of pH 7.0 were investigated by cyclic voltammetry, square wave voltammetry, and chronoamperometry. Under optimized conditions, the square wave voltammetric peak current of MET increased linearly with MET concentration in the range of 1.0 × 10-7 to 2.0 ×10-4 mol/L. The detection limit was 58.0 nmol/L MET. The diffusion coefficient (D = 5.62 × 10-6 cm2/s) and electron transfer coefficient (α = 0.4) for MET oxidation were also determined. The sensor was successfully applied for the measurement of MET concentration in human urine. |
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| Keywords: | Methionine Electrocatalysis Carbon nanotube Chemically modified electrode Voltammetry Benzoylferrocene |
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