Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane group
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000100017 |
Resumo: | An electrode-separated piezoelectric quartz crystal sensor with a chemically modified surface was proposed. The modification was carried out by a silanization procedure with N-2-aminoethyl-3-aminopropyltrimethoxysilane, yielding the immobilised N-2-aminoethyl-3-aminopropylsilane group over the surface of a 3.5 MHz piezoelectric quartz crystal. A flow cell was manufactured with poly(methyl methacrylate) and brass, instead of noble metals, for the electrodes. In this cell, the solution touches only one side of the crystal and the related electrode is coated with a polyester film, which prevents corrosion and does not disturb the oscillation process. This innovation reduces the cost of the cell and renders an electronics non DCcoupled to the solution. The modified crystal proved to be more sensitive to copper(II) ions than magnesium(II), nickel(II), zinc(II), and cobalt(II). For 100muL sample injections, the limit of detection for copper(II) was 6 mumol L-1, which is an impressive result when compared with that for an unmodified crystal. |
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Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane groupelectrode-separated piezoelectric sensorsilanizationflow injection analysisQCMN-2-aminoethyl-3-aminopropyltrimethoxysilaneAn electrode-separated piezoelectric quartz crystal sensor with a chemically modified surface was proposed. The modification was carried out by a silanization procedure with N-2-aminoethyl-3-aminopropyltrimethoxysilane, yielding the immobilised N-2-aminoethyl-3-aminopropylsilane group over the surface of a 3.5 MHz piezoelectric quartz crystal. A flow cell was manufactured with poly(methyl methacrylate) and brass, instead of noble metals, for the electrodes. In this cell, the solution touches only one side of the crystal and the related electrode is coated with a polyester film, which prevents corrosion and does not disturb the oscillation process. This innovation reduces the cost of the cell and renders an electronics non DCcoupled to the solution. The modified crystal proved to be more sensitive to copper(II) ions than magnesium(II), nickel(II), zinc(II), and cobalt(II). For 100muL sample injections, the limit of detection for copper(II) was 6 mumol L-1, which is an impressive result when compared with that for an unmodified crystal.Sociedade Brasileira de Química2001-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000100017Journal of the Brazilian Chemical Society v.12 n.1 2001reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532001000100017info:eu-repo/semantics/openAccessJesus,Dosil P. deNeves,Carlos A.Lago,Claudimir L. doeng2001-04-19T00:00:00Zoai:scielo:S0103-50532001000100017Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2001-04-19T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane group |
title |
Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane group |
spellingShingle |
Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane group Jesus,Dosil P. de electrode-separated piezoelectric sensor silanization flow injection analysis QCM N-2-aminoethyl-3-aminopropyltrimethoxysilane |
title_short |
Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane group |
title_full |
Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane group |
title_fullStr |
Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane group |
title_full_unstemmed |
Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane group |
title_sort |
Improving the sensitivity of electrode-separated piezoelectric quartz crystal sensor for copper(II) ions by immobilization of the N-2-aminoethyl-3-aminopropylsilane group |
author |
Jesus,Dosil P. de |
author_facet |
Jesus,Dosil P. de Neves,Carlos A. Lago,Claudimir L. do |
author_role |
author |
author2 |
Neves,Carlos A. Lago,Claudimir L. do |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Jesus,Dosil P. de Neves,Carlos A. Lago,Claudimir L. do |
dc.subject.por.fl_str_mv |
electrode-separated piezoelectric sensor silanization flow injection analysis QCM N-2-aminoethyl-3-aminopropyltrimethoxysilane |
topic |
electrode-separated piezoelectric sensor silanization flow injection analysis QCM N-2-aminoethyl-3-aminopropyltrimethoxysilane |
description |
An electrode-separated piezoelectric quartz crystal sensor with a chemically modified surface was proposed. The modification was carried out by a silanization procedure with N-2-aminoethyl-3-aminopropyltrimethoxysilane, yielding the immobilised N-2-aminoethyl-3-aminopropylsilane group over the surface of a 3.5 MHz piezoelectric quartz crystal. A flow cell was manufactured with poly(methyl methacrylate) and brass, instead of noble metals, for the electrodes. In this cell, the solution touches only one side of the crystal and the related electrode is coated with a polyester film, which prevents corrosion and does not disturb the oscillation process. This innovation reduces the cost of the cell and renders an electronics non DCcoupled to the solution. The modified crystal proved to be more sensitive to copper(II) ions than magnesium(II), nickel(II), zinc(II), and cobalt(II). For 100muL sample injections, the limit of detection for copper(II) was 6 mumol L-1, which is an impressive result when compared with that for an unmodified crystal. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000100017 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000100017 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532001000100017 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.12 n.1 2001 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318164217954304 |