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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.)

Molecularly imprinted electrochemical sensor for monitoring mercaptan sulfur in aviation biofuel

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Author(s):
Falone, Max Fabricio [1, 2] ; Buffon, Edervaldo [1, 2] ; Stradiotto, Nelson Ramos [1, 2]
Total Authors: 3
Affiliation:
[1] Sao Paulo State Univ, Inst Chem, UNESP, BR-14800060 Araraquara, SP - Brazil
[2] Sao Paulo State Univ, Bioenergy Res Inst, UNESP, BR-14800060 Araraquara, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: FUEL; v. 307, JAN 1 2022.
Web of Science Citations: 0
Abstract

This work reports the development and application of a molecularly imprinted electrochemical sensor based on the electropolymerization of pyrrole film on glassy carbon electrode for monitoring mercaptan sulfur in aviation biofuel. To this end, butanethiol was used as a template molecule for the formation of imprinted cavities in the polypyrrole structure. The modified electrode was characterized by cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. After the optimization of the experimental conditions, the sensor presented linear working ranges in the concentration range of 1.0 x 10-12 to 1.0 x 10-10 mol L-1. The values obtained for the amperometric sensitivity and the limits of detection and quantification of this device were 5.1 x 105 A L mol-1, 6.1 x 10-13 mol L-1, and 2.0 x 10-12 mol L-1, respectively. The proposed sensor showed excellent selectivity, remarkable repeatability and high stability for butanethiol detection. The proposed electroanalytical method was successfully applied in aviation biofuel sample where it exhibited recovery values between 98% and 107%, with relative standard deviation ranging from 1.1% to 4.1%. The results obtained show that the proposed sensor has good accuracy and can be successfully applied for monitoring mercaptan sulfur in aviation biofuel samples. (AU)

FAPESP's process: 19/13818-8 - Development of disposable sensors based on 3D graphene oxide, metal nanoparticles and molecularly imprinted polymers for the determination of phenolic acids in fruticulture waste
Grantee:Edervaldo Buffon
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 17/25329-6 - DEVELOPMENT OF NEW ANALYTICAL METHODS FOR EVALUATION OF AVIATION BIOKEROSENE QUALITY
Grantee:Nelson Ramos Stradiotto
Support type: Regular Research Grants