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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.)

Electrochemical Sensor Based on Nanodiamonds and Manioc Starch for Detection of Tetracycline

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Fernandes-Junior, Wilson Silva [1] ; Zaccarin, Leticia Fernanda [1] ; Oliveira, Geiser Gabriel [2] ; de Oliveira, Paulo Roberto [1] ; Kalinke, Cristiane [3] ; Bonacin, Juliano Alves [3] ; Prakash, Jai [4] ; Janegitz, Bruno Campos [1]
Total Authors: 8
[1] Univ Fed Sao Carlos, Dept Nat Sci Math & Educ, BR-13600970 Araras, SP - Brazil
[2] Fed Univ Tocantins, BR-77402970 Gurupi, TO - Brazil
[3] Univ Estadual Campinas, Inst Chem, BR-13083859 Campinas, SP - Brazil
[4] Natl Inst Technol Hamirpur, Dept Chem, Hamirpur 177005 - India
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF SENSORS; v. 2021, MAR 9 2021.
Web of Science Citations: 0

The use of nanostructured materials is already well-known as a powerful tool in the development of electrochemical sensors. Among several immobilization strategies of nanomaterials in the development of electrochemical sensors, the use of low-cost and environmentally friendly polymeric materials is highlighted. In this context, a new nanostructured biocomposite electrode is proposed as an electrochemical sensor for the analysis and determination of tetracycline. The composite electrode consists of a modified glassy carbon electrode (GCE) with a nanodiamond-based (ND) and manioc starch biofilm (MS), called ND-MS/GCE. The proposed sensor showed better electrochemical performance in the presence of tetracycline in comparison to the unmodified electrode, which was attributed to the increase in the electroactive surface area due to the presence of nanodiamonds. A linear dynamic range from 5.0 x 10(-6) to 1.8 x 10(-4) mol L-1 and a limit of detection of 2.0 x 10(-6) mol L-1 were obtained for the proposed sensor. ND-MS/GCE exhibited high repeatability and reproducibility for successive measurements with a relative standard deviation (RSD) of 6.3% and 1.5%, respectively. The proposed electrode was successfully applied for the detection of tetracycline in different kinds of water samples, presenting recoveries ranging from 86 to 112%. (AU)

FAPESP's process: 17/21097-3 - Bee-agriculture interactions: perspectives to sustainable use
Grantee:Osmar Malaspina
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 19/26953-0 - Electrochemical sensors and biosensors printed in 3D using graphene filament for detection of phenolic compounds
Grantee:Wilson da Silva Fernandes Junior
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 13/22127-2 - Development of novel materials strategic for integrated analytical devices
Grantee:Lauro Tatsuo Kubota
Support type: Research Projects - Thematic Grants
FAPESP's process: 19/01844-4 - Development of nanostructured electrodes for determination of agrotoxic residues in honey
Grantee:Paulo Roberto de Oliveira
Support type: Scholarships in Brazil - Post-Doctorate