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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 for propylparaben using hybrid Layer-by-Layer films composed of gold nanoparticles, poly(ethylene imine) and nickel(II) phthalocyanine tetrasulfonate

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Author(s):
de Lima, Lucas F. [1] ; Pereira, Elisabete A. [1] ; Ferreira, Marystela [1]
Total Authors: 3
Affiliation:
[1] Fed Univ Sao Carlos UFSCar, Ctr Sci & Technol Sustainabil CCTS, BR-18052780 Sorocaba, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: SENSORS AND ACTUATORS B-CHEMICAL; v. 310, MAY 1 2020.
Web of Science Citations: 0
Abstract

Electroanalytical detection of propylparaben (ProP) using gold nanoparticles-electrodeposited onto indium-finoxide electrode (AuNP-ITO) functionalized with PEI (poly(ethylene imine)) and NiTsPc (nickel(II) phthalocyanine tetrasulfonate) in the film (ITO-AuNPs-(PEI/NiTsPc)(3), was studied to verify the viability of a modified electrode (non-enzymatic) using Differential Pulse Voltammetry (DPV). It was possible to verify that gold nanoparticle-electrodeposited, which showed average diameters of 72.97 +/- 1.60 nm, had electroactive area and increased conductivity with (ITO-AuNPs-(PEI/NiTsPc)(3) in comparison with and the electrode of bare ITO, ITO-(PEI/NiTsPc)(3) and ITO-AuNPs, according to Cyclic Voltammetry (CV). The response obtained by DPV in 0.1 mol L-1 PBS (pH 7.0) to detect ProP in cosmetic with a linear range from 2.0 to 20.0 x 10(-6) mol L-1, the limit of detection (LD) obtained was 8.01 x 10(-8) mol L-1 and 2.67 x 10(-7) mol L-1 for the limit of quantification (LQ). Moreover, the sensor obtained the same performance when statistically compared to capillary electrophoresis (CE). (AU)

FAPESP's process: 14/15093-7 - Study of nanostructured systems by surface plasmon resonance (SPR): applications in biosensing
Grantee:Celina Massumi Miyazaki
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 16/19387-0 - LbL (LAYER-BY-LAYER) and Langmuir-Blodgett (LB) nanostructured films with emodin for systems carriers.
Grantee:Marystela Ferreira
Support Opportunities: Regular Research Grants
FAPESP's process: 18/04061-8 - Layer by layer films of polypyrrol and magnetite nanoparticles in the analytical determination of parabens
Grantee:Lucas Felipe de Lima
Support Opportunities: Scholarships in Brazil - Master