Evaluation of a reconfigurable portable instrument for copper determination based on luminescent carbon dots

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• 作者：Alfonso Salinas-Castillo ; Diego P. Morales…
• 关键词：Carbon dots ; Luminescence ; Reconfigurable electronics ; FPAA ; Copper determination
• 刊名：Analytical and Bioanalytical Chemistry
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：408
• 期：11
• 页码：3013-3020
• 全文大小：509 KB
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• 作者单位：Alfonso Salinas-Castillo (1)
  Diego P. Morales (2)
  Alejandro Lapresta-Fernández (1)
  María Ariza-Avidad (1)
  Encarnación Castillo (2)
  Antonio Martínez-Olmos (2)
  Alberto J. Palma (2)
  Luis Fermin Capitan-Vallvey (1)
  
  1. ECsens, Department of Analytical Chemistry, Campus Fuentenueva, Faculty of Sciences, University of Granada, 18071, Granada, Spain
  2. ECsens, Department of Electronics and Computer Technology, CITIC-ETSIIT, Campus Fuentenueva, Faculty of Sciences, University of Granada, 18071, Granada, Spain
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Analytical Chemistry
  Food Science
  Inorganic Chemistry
  Physical Chemistry
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1618-2650

文摘

A portable reconfigurable platform for copper (Cu(II)) determination based on luminescent carbon dot (Cdots) quenching is described. The electronic setup consists of a light-emitting diode (LED) as the carbon dot optical exciter and a photodiode as a light-to-current converter integrated in the same instrument. Moreover, the overall analog conditioning is simply performed with one integrated solution, a field-programmable analog array (FPAA), which makes it possible to reconfigure the filter and gain stages in real time. This feature provides adaptability to use the platform as an analytical probe for carbon dots coming from different batches with some variations in luminescence characteristics. The calibration functions obtained that fit a modified Stern-Volmer equation were obtained using luminescence signals from Cdots quenching by Cu(II). The analytical applicability of the reconfigurable portable instrument for Cu(II) using Cdots has been successfully demonstrated in tap water analysis.