Electrochemical reduction of sulfite based on gold nanoparticles/silsesquioxane-modified electrode
作者： João Paulo Winiarski , Marília Reginato de Barros , Hérica Aparecida Magosso , Cristiane Luisa Jost
DOI: 10.1016/J.ELECTACTA.2017.08.171
关键词:
摘要: Abstract This paper reports the synthesis and characterization of water-soluble form 3-n-propyl(4-methylpyridinium) silsesquioxane chloride (Si4Pic+Cl−), which showed potential for application as a stabilizing agent gold nanoparticles (AuNP). Dispersed stable suspensions nanoparticles, with an average diameter 45 nm, were obtained. Carbon paste electrodes modified Si4Pic+Cl− constructed applied in detection quantification sulfite acidic medium. Under these conditions, sulfur is electroactive (sulfur dioxide) typical reduction peak at ca. −0.35 V (vs. SCE). Considering voltammetric signal sulfite, electrode AuNP (CPE/Au-Si4Pic+Cl−) electrocatalytic effect −0.20 V compared to bare electrode. In square-wave voltammetry analysis, under optimized experimental increased increasing concentration range 2.54 48.6 mg L−1. The calculated LOD LOQ values 0.88 2.68 mg L−1, respectively. proposed method was successfully white wine coconut water samples, no matrix effects noted. Validation performed through comparison results obtained by iodimetric titration. recovery tests, percentage varied from 98 103% (n = 3).
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sci-hub.se 参考文章(56)
James M Vahl, Jean E Converse, , A A Andreasen, J H Barnett, J G Bence, A Caputi, J A Cherolis, D Cofran, R Dowrie, R H Dyer, S A Fike, R G Finley, R B Grorud, R Hanson, D Jacobs, A Johnson, J C Jones, W H Kipp, J L Kutschinski, L R Mattick, R Peterson, R Pike, D Quinsland, B W Rehn, A C Rice, Ripper procedure for determining sulfur dioxide in wine: collaborative study. Journal - Association of Official Analytical Chemists. ,vol. 63, pp. 194- 199 ,(1980) , 10.1093/JAOAC/63.2.194
Christopher M. A. Brett, Ana Maria Oliveira Brett, Electrochemistry: Principles, Methods, and Applications ,(1993)
Matthias Otto, Jean-Michel Mermet, M. Valcárcel Cases, Analytical Chemistry: A Modern Approach to Analytical Science ,(2004)
William Horwitz, Official Methods of Analysis of AOAC International AOAC official method 985.29. ,(2006)
Steve L. Taylor, Nancy A. Higley, Robert K. Bush, Sulfites in foods: uses, analytical methods, residues, fate, exposure assessment, metabolism, toxicity, and hypersensitivity. Advances in food research. ,vol. 30, pp. 1- 76 ,(1986) , 10.1016/S0065-2628(08)60347-X
Tânia Regina Silva, Iolanda Cruz Vieira, A biosensor based on gold nanoparticles stabilized in poly(allylamine hydrochloride) and decorated with laccase for determination of dopamine Analyst. ,vol. 141, pp. 216- 224 ,(2016) , 10.1039/C5AN01784J
Vagner dos Santos, Cliciane Guadalupe de Jesus, Monalisa dos Santos, Carla Daniele Canestraro, Valtencir Zucolotto, Sérgio Toshio Fujiwara, Jarem Raul Garcia, Christiana Andrade Pessoa, Karen Wohnrath, Platinum nanoparticles incorporated in silsesquioxane for use in LbL films for the simultaneous detection of dopamine and ascorbic acid Journal of Nanoparticle Research. ,vol. 14, pp. 1081- ,(2012) , 10.1007/S11051-012-1081-4
Gary E. Michael, Dean W. Sindorf, Victor J. Bartuska, Characterization of silica-attached systems by 29Si and 13C cross-polarization and magic-angle spinning nuclear magnetic resonance Journal of Chromatography A. ,vol. 205, pp. 438- 443 ,(1981) , 10.1016/S0021-9673(00)82673-4
Cliciane Guadalupe de Jesus, Dhésmon Lima, Vagner dos Santos, Karen Wohnrath, Christiana Andrade Pessôa, Glucose biosensor based on the highly efficient immobilization of glucose oxidase on layer-by-layer films of silsesquioxane polyelectrolyte Sensors and Actuators B-chemical. ,vol. 186, pp. 44- 51 ,(2013) , 10.1016/J.SNB.2013.05.063
Chandra Shekhar Pundir, Rachna Rawal, Determination of sulfite with emphasis on biosensing methods: a review Analytical and Bioanalytical Chemistry. ,vol. 405, pp. 3049- 3062 ,(2013) , 10.1007/S00216-013-6753-0