A simple and sensitive electrochemical detection of caffeine (CAF) using a single-walled carbon nanotubes on carbon-ceramic electrode (SWCNT/CCE) is reported. CAF was oxidized at the surface of the modified electrode to produce an anodic peak at 1.38 V versus the saturated calomel electrode in 0.01 mol/L, pH 1.7 H2SO4 solution in cyclic voltammetry. The experimental parameters, namely, type of electrolyte, pH value, and amount of SWCNTs casted, were optimized. Using the optimum conditions, the anodic peak current in differential pulse voltammetry was linear with CAF concentration in the range of 2.5×10-7-1.0×10-4 mol/L. The detection limit was 1.2×10-7 mol/L (S/N=3). The modified electrode exhibited good stability and can be easily regenerated. The relative standard deviation of the peak current obtained for a 5.0×10-5 mol/L CAF solution was 3.0%. The influence of some important biological compounds, namely, ascorbic acid, do-pamine, and uric acid and addictive compounds like codeine, morphine, and acetaminophen on the CAF anodic peak current was examined. The method was successfully applied for the determination of CAF in some practical samples.
参考文献
| [1] | Yang S;Yang R;Li G;Qu L Li J Yu L .[J].Journal of Electroanalytical Chemistry,2010,639:77. |
| [2] | Ashihara H;Suzuki T .[J].Frontiers in Bioscience,2004,9:1864. |
| [3] | Rieg T;Steigele H;Schnermann J;Richter K Osswald H Val-lon V .[J].Journal of Pharmacology and Experimental Therapeutics,2005,313:403. |
| [4] | Soloveychik V;Bin-Nun A;Ionchev A;Sriram S;Meadow W .Acute hemodynamic effects of caffeine administration in premature infants.[J].Journal of perinatology: Official journal of the California Perinatal Association,2009(3):205-208. |
| [5] | Lourencao B C;Medeiros R A;Rocha-Filho R C;Mazo L H，Fatibello-Filho O .[J].Talanta,2009,78:748. |
| [6] | Sawynok J .[J].Drugs,1995,49:37. |
| [7] | Baranska M;Proniewicz L M .[J].Vibrational Spectroscopy,2008,48:153. |
| [8] | Wei Y F;Wang D Y;Yan H T .[J].Spectroscopy and Spectral Analysis,2001,21:534. |
| [9] | Wang H;Chen L;Xu Y;Zeng Q Zhang X Zhao Q Ding L .[J].LWT Food Science and Technology,2011,44:1490. |
| [10] | Soponar, F;Mot, AC;Sarbu, C .Quantitative Evaluation of Paracetamol and Caffeine from Pharmaceutical Preparations Using Image Analysis and RP-TLC[J].Chromatographia,2009(1/2):151-155. |
| [11] | Wang A;Sun J;Feng HJ;Gao S;He ZG .Simultaneous determination of paracetamol and caffeine in human plasma by LC-ESI-MS[J].Chromatographia,2008(3/4):281-285. |
| [12] | Verenitch S S;Mazumder A .[J].Analytical Biochemistry,2008,391:2635. |
| [13] | Arinobu T;Hattori H;Kumazawa T;Lee X P Mizutani Y Katase T Kojima S Omori T Kaneko R Ishii A Seno H .[J].Fo-rensic Toxicol,2009,27:1. |
| [14] | Aranda M;Morlock G .[J].Journal of Chromatographic Science,2007,45:251. |
| [15] | Emre, D;Ozaltin, N .Simultaneous determination of paracetamol, caffeine and propyphenazone in ternary mixtures by micellar electrokinetic capillary chromatography[J].Journal of chromatography. B, Analytical technologies in the biomedical and life sciences,2007(2):126-132. |
| [16] | Amini A;Barclay V;Rundlof T;Jonsson S Karlsson A Ar-vidsson T .[J].Chromatographia,2006,63:143. |
| [17] | Sadik OA.;Land WH.;Wang J. .Targeting chemical and biological warfare agents at the molecular level [Review][J].Electroanalysis,2003(14):1149-1159. |
| [18] | Zen JM.;Shih Y.;Ting YS. .Voltammetric determination of caffeine in beverages using a chemically modified electrode[J].The Analyst: The Analytical Journal of the Royal Society of Chemistry: A Monthly International Publication Dealing with All Branches of Analytical Chemistry,1998(5):1145-1147. |
| [19] | Akyilmaz E;Turemis M .[J].Electrochimica Acta,2010,55:5195. |
| [20] | Brunetti, B;Desimoni, E;Casati, P .Determination of caffeine at a Nafion-covered glassy carbon electrode[J].Electroanalysis,2007(2/3):385-388. |
| [21] | Sp?taru N;Sarada B V;Tryk D A;Fujishima A .[J].Electroanalysis,2002,14:721. |
| [22] | Martínez-Huitle C A;Suely Fernandes N;Ferro S;De Battisti A Quiroz M A .[J].Diamond and Related Materials,2010,19:1188. |
| [23] | Alizadeh T;Ganjali M R;Zare M;Norouzi P .[J].Electrochimica Acta,2010,55:1568. |
| [24] | Zhang J;Wang L P;Guo W;Peng X D Li M Yuan Z B .[J].International Journal of Electrochemical Science,2011,6:997. |
| [25] | Riahi S;Faridbod F;Ganjali M R .[J].SENSOR LETTERS,2009,7:42. |
| [26] | Katsu T;Tsunamoto Y;Hanioka N;Komagoe K Masuda K Narimatsu S .[J].Analytica Chimica Acta,2008,620:50. |
| [27] | Louren;Medeiros R A;Rocha-Filho R C;Fatibello-Filho O .[J].Electroanalysis,2010,22(o B C):1717. |
| [28] | Guo S;Zhu Q;Yang B;Wang J Ye B .[J].Food Chemistry,2011,129:1311. |
| [29] | Meyyappan M.Carbon Nanotubes Science and Applications[M].Florida:CRC Press,Inc,2005:171. |
| [30] | Valcárcel M;Simonet B M;Cárdenas S;Súarez B .[J].Analytical Biochemistry,2005,382:1783. |
| [31] | Trojanowicz M .Analytical applications of carbon nanotubes: a review[J].TrAC: Trends in Analytical Chemistry,2006(5):480-489. |
| [32] | Merko?i A .[J].Microchimica Acta,2006,152:157. |
| [33] | Tsionsky M;Gun G;Glezer V;Lev O .[J].Analytical Chemistry,1994,66:1747. |
| [34] | Lev O;Wu Z;Bharathi S;Glezer V Modestov A Gun J Rabinovich L Sampath S .[J].Chemistry of Materials,1997,9:2354. |
| [35] | Bard A J;Faulkner L R.Electrochemical Methods:Funda-mentals and Applications[M].New York:wiley,2001 |
| [36] | Habibi B;Jahanbakhshi M;Pournaghi-Azar M H .[J].Microchimica Acta,2011,172:147. |
| [37] | Dryhurst G;Hansen B H .[J].Journal of Electroanalytical Chemistry,1971,30:407. |
| [38] | Telo J P;Vieira A J S C;J Chem Soc .[J].Journal of the Chemical Society,Perkin Transactions,1997,29:1755. |
| [39] | Sun, J.-Y.;Huang, K.-J.;Wei, S.-Y.;Wu, Z.-W.;Ren, F.-P. .A graphene-based electrochemical sensor for sensitive determination of caffeine[J].Colloids and Surfaces, B. Biointerfaces,2011(2):421-426. |
| [40] | Zhang Z;Wang E.Electrochemical Principles and Methods[M].北京:科学出版社,2000:242. |
| [41] | Mersal, G. A. M. .Experimental and computational studies on the electrochemical oxidation of caffeine at pseudo carbon paste electrode and its voltammetric determination in different real samples.[J].Food analytical methods,2012(3):520-529. |
| [42] | Goyal, RN;Bishnoi, S;Agrawal, B .Electrochemical sensor for the simultaneous determination of caffeine and aspirin in human urine samples[J].Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry,2011(2):97-102. |
| [43] | Galus Z.Fundamentals of Electrochemical Analysis[M].New York:Ellis Hornood,1976:10. |
| [44] | Ardakani M M;Karami P E;Rahimi P;Zare H R Naeimi H .[J].Electrochimica Acta,2007,52:6118. |
| [45] | Laviron E .[J].Journal of Electroanalytical Chemistry,1979,101:19. |
| [46] | Ly SY;Lee CH;Jung YS .Voltammetric bioassay of caffeine using sensor implant.[J].Neuromolecular medicine,2009(1):20-27. |
| [47] | Wei Y;Zhang L;Shao C;Li C .[J].Chemia Analityczna(Warsaw Poland),2009,54:607. |
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