Determination of Sunset Yellow using a carbon paste electrode modified with a nanostructured resorcinol-formaldehyde resin

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• 作者：Dong Sun ; Caiqun Xu ; Jianghua Long ; Teng Ge
• 关键词：Differential pulse voltammetry ; Transmission electron microscopy ; Scanning electron microscopy ; Environmental analysis ; Water analysis
• 刊名：Microchimica Acta
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：182
• 期：15-16
• 页码：2601-2606
• 全文大小：454 KB
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• 作者单位：Dong Sun (1) (2)
  Caiqun Xu (2)
  Jianghua Long (1)
  Teng Ge (1)
  
  1. School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
  2. Judicial Expertise Center of Wenzhou Medical University, Wenzhou, 325003, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Analytical Chemistry
  Inorganic Chemistry
  Physical Chemistry
  Characterization and Evaluation Materials
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  
• 出版者：Springer Wien
• ISSN：1436-5073

文摘

This article describes an electrochemical sensor for the dye additive Sunset Yellow (SY). It consists of a carbon paste electrode modified with nanostructured resorcinol-formaldehyde (RF) resin. The RF resin warrants strong signal enhancement and a strongly increased oxidation peak currents of SY at 0.66 V (vs. SCE). The effects of pH value, amount of RF polymer, accumulation potential and time were optimized. The sensor has a linear response to SY in the 0.3 to 125 nM concentration range, and the limit of detection is 0.09 nM after a 2-min accumulation time. The electrode was applied to the analysis of samples of wastewater and drinks, and the results are consistent with those obtained by HPLC.