Sensor for hydrogen peroxide based on Prussian Blue modified electrode: Improvement of the operational stability
Autor(a) principal: | |
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Data de Publicação: | 2000 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.2116/analsci.16.795 http://hdl.handle.net/11449/66248 |
Resumo: | Improvement of the operational stability of amperometric sensors based on Prussian Blue (PB) modified glassy carbon electrodes is presented. The long term performance of the sensors was evaluated by injection of hydrogen peroxide (5 μM in potassium buffer) solutions in a flow-injection system during a period of 5-10 h. The following parameters were investigated and correlated with the performance of the sensor: the times for electrodeposition and electrochemical activation, temperature, storage time, pH, composition of the buffer solution and of volume sample injected. These analytical characteristics of the modified electrode can be emphasized: initial sensitivity of 0.3 A cm-2 M-1, detection limit of ca. 0.5 μM, precise results (r.s.d.< 1.5%) and possibility to carry out around 50 samples (50 μL) per hour. |
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Repositório Institucional da UNESP |
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Sensor for hydrogen peroxide based on Prussian Blue modified electrode: Improvement of the operational stabilitybufferferric ferrocyanidehydrogen peroxidechemical modificationelectrochemistryelectrodeflow injection analysispH measurementreaction analysissensorImprovement of the operational stability of amperometric sensors based on Prussian Blue (PB) modified glassy carbon electrodes is presented. The long term performance of the sensors was evaluated by injection of hydrogen peroxide (5 μM in potassium buffer) solutions in a flow-injection system during a period of 5-10 h. The following parameters were investigated and correlated with the performance of the sensor: the times for electrodeposition and electrochemical activation, temperature, storage time, pH, composition of the buffer solution and of volume sample injected. These analytical characteristics of the modified electrode can be emphasized: initial sensitivity of 0.3 A cm-2 M-1, detection limit of ca. 0.5 μM, precise results (r.s.d.< 1.5%) and possibility to carry out around 50 samples (50 μL) per hour.Departamento de Química Faculdade de Ciências UNESP, P. O. Box 473, 17033-360 Bauru-SPDepartment of Analytical Chemistry Lund University, P. O. Box 124, SE-22100 LundDepartment of Chemistry M. V. Lomonosov Moscow State UniversityDepartamento de Química Faculdade de Ciências UNESP, P. O. Box 473, 17033-360 Bauru-SPUniversidade Estadual Paulista (Unesp)Lund UniversityM. V. Lomonosov Moscow State UniversityDe Mattos, Ivanildo Luiz [UNESP]Gorton, LoRuzgas, TautgirdasKaryakin, Arkady A.2014-05-27T11:19:57Z2014-05-27T11:19:57Z2000-09-13info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article795-798application/pdfhttp://dx.doi.org/10.2116/analsci.16.795Analytical Sciences, v. 16, n. 8, p. 795-798, 2000.0910-6340http://hdl.handle.net/11449/6624810.2116/analsci.16.795WOS:0000889492000032-s2.0-0033846525WOS000088949200003.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnalytical Sciences1.3550,424info:eu-repo/semantics/openAccess2024-04-29T18:16:49Zoai:repositorio.unesp.br:11449/66248Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:19:19.858031Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Sensor for hydrogen peroxide based on Prussian Blue modified electrode: Improvement of the operational stability |
title |
Sensor for hydrogen peroxide based on Prussian Blue modified electrode: Improvement of the operational stability |
spellingShingle |
Sensor for hydrogen peroxide based on Prussian Blue modified electrode: Improvement of the operational stability De Mattos, Ivanildo Luiz [UNESP] buffer ferric ferrocyanide hydrogen peroxide chemical modification electrochemistry electrode flow injection analysis pH measurement reaction analysis sensor |
title_short |
Sensor for hydrogen peroxide based on Prussian Blue modified electrode: Improvement of the operational stability |
title_full |
Sensor for hydrogen peroxide based on Prussian Blue modified electrode: Improvement of the operational stability |
title_fullStr |
Sensor for hydrogen peroxide based on Prussian Blue modified electrode: Improvement of the operational stability |
title_full_unstemmed |
Sensor for hydrogen peroxide based on Prussian Blue modified electrode: Improvement of the operational stability |
title_sort |
Sensor for hydrogen peroxide based on Prussian Blue modified electrode: Improvement of the operational stability |
author |
De Mattos, Ivanildo Luiz [UNESP] |
author_facet |
De Mattos, Ivanildo Luiz [UNESP] Gorton, Lo Ruzgas, Tautgirdas Karyakin, Arkady A. |
author_role |
author |
author2 |
Gorton, Lo Ruzgas, Tautgirdas Karyakin, Arkady A. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Lund University M. V. Lomonosov Moscow State University |
dc.contributor.author.fl_str_mv |
De Mattos, Ivanildo Luiz [UNESP] Gorton, Lo Ruzgas, Tautgirdas Karyakin, Arkady A. |
dc.subject.por.fl_str_mv |
buffer ferric ferrocyanide hydrogen peroxide chemical modification electrochemistry electrode flow injection analysis pH measurement reaction analysis sensor |
topic |
buffer ferric ferrocyanide hydrogen peroxide chemical modification electrochemistry electrode flow injection analysis pH measurement reaction analysis sensor |
description |
Improvement of the operational stability of amperometric sensors based on Prussian Blue (PB) modified glassy carbon electrodes is presented. The long term performance of the sensors was evaluated by injection of hydrogen peroxide (5 μM in potassium buffer) solutions in a flow-injection system during a period of 5-10 h. The following parameters were investigated and correlated with the performance of the sensor: the times for electrodeposition and electrochemical activation, temperature, storage time, pH, composition of the buffer solution and of volume sample injected. These analytical characteristics of the modified electrode can be emphasized: initial sensitivity of 0.3 A cm-2 M-1, detection limit of ca. 0.5 μM, precise results (r.s.d.< 1.5%) and possibility to carry out around 50 samples (50 μL) per hour. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-09-13 2014-05-27T11:19:57Z 2014-05-27T11:19:57Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.2116/analsci.16.795 Analytical Sciences, v. 16, n. 8, p. 795-798, 2000. 0910-6340 http://hdl.handle.net/11449/66248 10.2116/analsci.16.795 WOS:000088949200003 2-s2.0-0033846525 WOS000088949200003.pdf |
url |
http://dx.doi.org/10.2116/analsci.16.795 http://hdl.handle.net/11449/66248 |
identifier_str_mv |
Analytical Sciences, v. 16, n. 8, p. 795-798, 2000. 0910-6340 10.2116/analsci.16.795 WOS:000088949200003 2-s2.0-0033846525 WOS000088949200003.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Analytical Sciences 1.355 0,424 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
795-798 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128632609046528 |