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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.)

Square-wave adsorptive anodic stripping voltammetric determination of norfloxacin using a glassy carbon electrode modified with carbon black and CdTe quantum dots in a chitosan film

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Author(s):
Santos, Anderson Martin [1] ; Wong, Ademar [1] ; Cincotto, Fernando Henrique [2] ; Moraes, Fernando Cruz [1] ; Fatibello-Filho, Orlando [1]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Carlos, Dept Chem, Rod Washington Luis Km 235, POB 676, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Fed Rio de Janeiro, Inst Chem, Ctr Tecnol Cidade Univ, Ave Athos da Silveira Ramos 149, Bloco A, BR-21941901 Rio De Janeiro - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Microchimica Acta; v. 186, n. 3 MAR 2019.
Web of Science Citations: 3
Abstract

A glassy carbon electrode was modified with carbon black and CdTe quantum dots in a chitosan film to obtained a sensor for norfloxacin (NOR) in the presence of dopamine, caffeine, and uric acid. The morphological, structural and electrochemical characteristics of the nanostructured material were evaluated using spectrophotometry, X-ray diffraction, transmission electronic microscopy and voltammetry. The high electrochemical activity, fast electron transfer rate and high surface area enhanced the oxidation peak currents and shifted the peak potentials of NOR for more negative values (typically at 0.95V vs. Ag/AgCl). Electrochemical determination of NOR was carried out using square-wave adsorptive anodic stripping voltammetry (SWAdASV). Response is linear in the0.2 to 7.4molL(-1) NOR concentrationrange, and the detection limit is as low as 6.6nmolL(-1). The method was successfully applied to the determination of norfloxacin in pharmaceutical formulation, synthetic urine and spiked serum. (AU)

FAPESP's process: 16/12926-3 - Removal and real time determination of environmental pollutants using electrochemical photoassisted system
Grantee:Fernando Cruz de Moraes
Support type: Regular Research Grants
FAPESP's process: 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination
Grantee:Marcos Roberto de Vasconcelos Lanza
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/16565-5 - Development of ultra-sensitive methods for RNA detection for the diagnosis of Head and Neck Cancer
Grantee:Fernando Henrique Cincotto
Support type: Scholarships in Brazil - Post-Doctorate