Very sensitive electrochemical sensor for moniliformin detectionin maize samples

Autores
Diaz Toro, Paulo Cesar; Arevalo, Fernando Javier; Fumero, María Verónica; Zon, María Alicia; Fernandez, Hector
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A highly sensitive electrochemical sensor based on self-assembled monolayers (SAMs) of cysteamine on gold electrodes (Au-CA) in pH 4 citrate buffer solutions was developed to quantify the moniliformin (MON) mycotoxin by cyclic voltammetry in contaminated maize samples. Parameters of SAMs modified gold electrodes such as concentration of thiol, modification time and MON accumulation time were adjusted to obtain the best performance of the sensor. The calibration curve was linear in the MON concentration range from 1 × 10-9 to 1 × 10-7 mol L-1. A limit of detection of 8.3 × 10-10 mol L-1 (0.1 ppb) was obtained. The standard addition method was used to minimize matrix effects. The concentration of MON determined with the electrochemical sensor was in very good agreement with results found by HPLC UV-vis. The sensor showed a good analytical performance with a relative standard deviation (RDS%) of about 3%.
Fil: Diaz Toro, Paulo Cesar. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Arevalo, Fernando Javier. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Fumero, María Verónica. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Zon, María Alicia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Fernandez, Hector. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Materia
CYCLIC VOLTAMMETRY
MAIZE SAMPLES
MONILIFORMIN
MYCOTOXINS
SELF-ASSEMBLED MONOLAYERS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/179592
Acceder
id CONICETDig_4bcda3b3cc2c584a54fc157eb720cf12
oai_identifier_str oai:ri.conicet.gov.ar:11336/179592
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Very sensitive electrochemical sensor for moniliformin detectionin maize samplesDiaz Toro, Paulo CesarArevalo, Fernando JavierFumero, María VerónicaZon, María AliciaFernandez, HectorCYCLIC VOLTAMMETRYMAIZE SAMPLESMONILIFORMINMYCOTOXINSSELF-ASSEMBLED MONOLAYERShttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A highly sensitive electrochemical sensor based on self-assembled monolayers (SAMs) of cysteamine on gold electrodes (Au-CA) in pH 4 citrate buffer solutions was developed to quantify the moniliformin (MON) mycotoxin by cyclic voltammetry in contaminated maize samples. Parameters of SAMs modified gold electrodes such as concentration of thiol, modification time and MON accumulation time were adjusted to obtain the best performance of the sensor. The calibration curve was linear in the MON concentration range from 1 × 10-9 to 1 × 10-7 mol L-1. A limit of detection of 8.3 × 10-10 mol L-1 (0.1 ppb) was obtained. The standard addition method was used to minimize matrix effects. The concentration of MON determined with the electrochemical sensor was in very good agreement with results found by HPLC UV-vis. The sensor showed a good analytical performance with a relative standard deviation (RDS%) of about 3%.Fil: Diaz Toro, Paulo Cesar. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Arevalo, Fernando Javier. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Fumero, María Verónica. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Zon, María Alicia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Fernandez, Hector. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaElsevier Science SA2016-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/179592Diaz Toro, Paulo Cesar; Arevalo, Fernando Javier; Fumero, María Verónica; Zon, María Alicia; Fernandez, Hector; Very sensitive electrochemical sensor for moniliformin detectionin maize samples; Elsevier Science SA; Sensors and Actuators B: Chemical; 225; 3-2016; 384-3900925-4005CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/J.SNB.2015.11.042info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:51:41Zoai:ri.conicet.gov.ar:11336/179592instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:51:42.009CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Very sensitive electrochemical sensor for moniliformin detectionin maize samples
title Very sensitive electrochemical sensor for moniliformin detectionin maize samples
spellingShingle Very sensitive electrochemical sensor for moniliformin detectionin maize samples
Diaz Toro, Paulo Cesar
CYCLIC VOLTAMMETRY
MAIZE SAMPLES
MONILIFORMIN
MYCOTOXINS
SELF-ASSEMBLED MONOLAYERS
title_short Very sensitive electrochemical sensor for moniliformin detectionin maize samples
title_full Very sensitive electrochemical sensor for moniliformin detectionin maize samples
title_fullStr Very sensitive electrochemical sensor for moniliformin detectionin maize samples
title_full_unstemmed Very sensitive electrochemical sensor for moniliformin detectionin maize samples
title_sort Very sensitive electrochemical sensor for moniliformin detectionin maize samples
dc.creator.none.fl_str_mv Diaz Toro, Paulo Cesar
Arevalo, Fernando Javier
Fumero, María Verónica
Zon, María Alicia
Fernandez, Hector
author Diaz Toro, Paulo Cesar
author_facet Diaz Toro, Paulo Cesar
Arevalo, Fernando Javier
Fumero, María Verónica
Zon, María Alicia
Fernandez, Hector
author_role author
author2 Arevalo, Fernando Javier
Fumero, María Verónica
Zon, María Alicia
Fernandez, Hector
author2_role author
author
author
author
dc.subject.none.fl_str_mv CYCLIC VOLTAMMETRY
MAIZE SAMPLES
MONILIFORMIN
MYCOTOXINS
SELF-ASSEMBLED MONOLAYERS
topic CYCLIC VOLTAMMETRY
MAIZE SAMPLES
MONILIFORMIN
MYCOTOXINS
SELF-ASSEMBLED MONOLAYERS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A highly sensitive electrochemical sensor based on self-assembled monolayers (SAMs) of cysteamine on gold electrodes (Au-CA) in pH 4 citrate buffer solutions was developed to quantify the moniliformin (MON) mycotoxin by cyclic voltammetry in contaminated maize samples. Parameters of SAMs modified gold electrodes such as concentration of thiol, modification time and MON accumulation time were adjusted to obtain the best performance of the sensor. The calibration curve was linear in the MON concentration range from 1 × 10-9 to 1 × 10-7 mol L-1. A limit of detection of 8.3 × 10-10 mol L-1 (0.1 ppb) was obtained. The standard addition method was used to minimize matrix effects. The concentration of MON determined with the electrochemical sensor was in very good agreement with results found by HPLC UV-vis. The sensor showed a good analytical performance with a relative standard deviation (RDS%) of about 3%.
Fil: Diaz Toro, Paulo Cesar. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Arevalo, Fernando Javier. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Fumero, María Verónica. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Zon, María Alicia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Fernandez, Hector. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
description A highly sensitive electrochemical sensor based on self-assembled monolayers (SAMs) of cysteamine on gold electrodes (Au-CA) in pH 4 citrate buffer solutions was developed to quantify the moniliformin (MON) mycotoxin by cyclic voltammetry in contaminated maize samples. Parameters of SAMs modified gold electrodes such as concentration of thiol, modification time and MON accumulation time were adjusted to obtain the best performance of the sensor. The calibration curve was linear in the MON concentration range from 1 × 10-9 to 1 × 10-7 mol L-1. A limit of detection of 8.3 × 10-10 mol L-1 (0.1 ppb) was obtained. The standard addition method was used to minimize matrix effects. The concentration of MON determined with the electrochemical sensor was in very good agreement with results found by HPLC UV-vis. The sensor showed a good analytical performance with a relative standard deviation (RDS%) of about 3%.
publishDate 2016
dc.date.none.fl_str_mv 2016-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/179592
Diaz Toro, Paulo Cesar; Arevalo, Fernando Javier; Fumero, María Verónica; Zon, María Alicia; Fernandez, Hector; Very sensitive electrochemical sensor for moniliformin detectionin maize samples; Elsevier Science SA; Sensors and Actuators B: Chemical; 225; 3-2016; 384-390
0925-4005
CONICET Digital
CONICET
url http://hdl.handle.net/11336/179592
identifier_str_mv Diaz Toro, Paulo Cesar; Arevalo, Fernando Javier; Fumero, María Verónica; Zon, María Alicia; Fernandez, Hector; Very sensitive electrochemical sensor for moniliformin detectionin maize samples; Elsevier Science SA; Sensors and Actuators B: Chemical; 225; 3-2016; 384-390
0925-4005
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/J.SNB.2015.11.042
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science SA
publisher.none.fl_str_mv Elsevier Science SA
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269111109812224
score 13.13397

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