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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A new electrochemical platform based on carbon black paste electrode modified with ?-cyclodextrin and hierarchical porous carbon used for the simultaneous determination of dipyrone and codeine

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Author(s):
Wong, Ademar [1, 2] ; Riojas, Andy Cardenas [3] ; Baena-Moncada, Angelica M. [3] ; Sotomayor, Maria D. P. T. [1, 2]
Total Authors: 4
Affiliation:
[1] State Univ Sao Paulo UNESP, Inst Chem, Dept Analyt Chem, Araraquara, SP - Brazil
[2] Natl Inst Detect Alternat Technol Toxicol Evaluat, Araraquara, SP - Brazil
[3] Univ Nacl Ingn, Fac Ciencias, Lab Invest Electroquim Aplicada, Av Tupac Amaru 210, Lima - Peru
Total Affiliations: 3
Document type: Journal article
Source: Microchemical Journal; v. 164, MAY 2021.
Web of Science Citations: 0
Abstract

The present study reports the simultaneous determination of dipyrone and codeine by a simple, fast and low-cost method using carbon black paste electrode (CBPE) modified with ?-cyclodextrin (CD) and hierarchical porous carbon (HPC). Using optimum conditions, the CD-HPC/CBPE sensor proposed in this study presented excellent electrochemical catalysis. Based on square wave voltammetry (SWV) analysis, linear concentration ranges of 0.46 to 35 ?mol L-1 and 0.5 to 38 ?mol L-1 were obtained for dipyrone and codeine, respectively, with nanomolar limits of detection for both analytes. The proposed sensor exhibited good stability, satisfactory repeatability and high sensibility in the determination of the analytes of interest. The application of the sensor in real samples was found to be successful, with recovery rates ranging from 96 to 106%. The method proposed in this study was found to be reliable for the simultaneous detection of dipyrone and codeine in different matrices. (AU)

FAPESP's process: 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies
Grantee:Maria Valnice Boldrin
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 19/00677-7 - RADes-MIP - preparation and synthesis of materials for development of rapid analysis devices for monitoring emerging pollutants using highly selective biomimetic polymers based on molecular printing technology
Grantee:Maria Del Pilar Taboada Sotomayor
Support Opportunities: Regular Research Grants