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

Sensitive detection of estriol hormone in creek water using a sensor platform based on carbon black and silver nanoparticles

Full text
Show less -
Raymundo-Pereira, Paulo A. ; Campos, Anderson M. ; Vicentini, Fernando C. ; Janegitz, Bruno C. ; Mendonca, Camila D. ; Furini, Leonardo N. ; Boas, Naiza V. ; Calegaro, Marcelo L. ; Constantino, Carlos J. L. ; Machado, Sergio A. S. ; Oliveira, Jr., Osvaldo N.
Total Authors: 11
Document type: Journal article
Source: Talanta; v. 174, p. 652-659, NOV 1 2017.
Web of Science Citations: 13

We report the electrochemical detection of estriol using carbon black nanoballs (CNB) decorated with silver nanoparticles (AgNP) as electrode material. Homogeneous, porous films on glassy carbon electrodes (GCE) were obtained, with diameters of 20 - 25 nm for CNB and 5 - 6 nm for AgNP. CNB/AgNP electrodes had increased conductivity and electroactive area in comparison with bare GCE and GCE/CNB, according to cyclic voltammetry and electrochemical impedance spectroscopy. The oxidation potential peak was also down shifted by 93 mV, compared to the bare GC electrode. Differential pulse voltammetry data were obtained in 0.1 mol L-1 PBS (pH 7.0) to detect estriol without the purification step, in the linear range between 0.2 and 3.0 mu mol L-1 with detection and quantification limits of 0.16 and 0.5 mu mol L-1 (0.04 and 0.16 mg L-1), respectively. The sensor was used to detect estriol in a creek water sample with the same performance as in the official methodology based on high performance liquid chromatography. (AU)

FAPESP's process: 16/01919-6 - Design and fabrication of nanostructured flexible devices for biomarkers detection
Grantee:Paulo Augusto Raymundo Pereira
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 14/05197-0 - Development of electrochemical sensors based in mesoporous sílica containing graphene for analysis of bisphenol A
Grantee:Anderson Massahiro de Campos
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 13/14262-7 - Nanostructured films from biologically-relevant materials
Grantee:Osvaldo Novais de Oliveira Junior
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 16/12759-0 - Development of an advanced electroanalytical methodology for quantification of the hormones 17²-estradiol and 17±-etinilestradiol in supply water samples using electrodes modified with graphene, gold nanoparticles and quantum dots
Grantee:Sergio Antonio Spinola Machado
Support Opportunities: Regular Research Grants
FAPESP's process: 15/19099-2 - Development of electrochemical sensors and biosensors for different analytical purposes
Grantee:Bruno Campos Janegitz
Support Opportunities: Regular Research Grants
FAPESP's process: 12/17689-9 - Preparation and characterization of bifunctional-nanostructured surfaces of Au-Pt obtained via templates for application in sensors and biosensors
Grantee:Paulo Augusto Raymundo Pereira
Support Opportunities: Scholarships in Brazil - Doctorate