Publication
Trimethoprim-selective electrodes with molecularly imprinted polymers acting as ionophores and potentiometric transduction on graphite solid-contact
| dc.contributor.author | Rebelo, Tânia S. C. R. | |
| dc.contributor.author | Almeida, Sofia A. A. | |
| dc.contributor.author | Guerreiro, J. Rafaela L. | |
| dc.contributor.author | Montenegro, M.C.B.S.M. | |
| dc.contributor.author | Sales, Goreti | |
| dc.date.accessioned | 2015-10-20T11:21:37Z | |
| dc.date.available | 2015-10-20T11:21:37Z | |
| dc.date.issued | 2011 | |
| dc.description.abstract | This work proposes a new biomimetic sensor material for trimethoprim. It is prepared by means of radical polymerization, having trimethylolpropane trimethacrylate as cross-linker, benzoyl peroxide as radicalar iniciator, chloroform as porogenic solvent, and methacrylic acid and 2-vinyl pyridine as monomers. Different percentages of sensor in a range between 1 and 6% were studied. Their behavior was compared to that obtained with ion-exchanger quaternary ammonium salt (additive tetrakis(p-chlorophenyl)borate or tetraphenylborate). The effect of an anionic additive in the sensing membrane was also tested. Trimethoprim sensors with 1% of imprinted particles from methacrylic acid monomers showed the best response in terms of slope (59.7 mV/decade) and detection limit (4.01 × 10− 7 mol/L). These electrodes displayed also a good selectivity towards nickel, manganese aluminium, ammonium, lead, potassium, sodium, iron, chromium, sulfadiazine, alanine, cysteine, tryptophan, valine and glycine. The sensors were not affected by pH changes from 2 to 6. They were successfully applied to the analysis of water from aquaculture. | pt_PT |
| dc.identifier.doi | 10.1016/j.microc.2010.10.006 | |
| dc.identifier.issn | 0026-265X | |
| dc.identifier.uri | http://hdl.handle.net/10400.22/6766 | |
| dc.language.iso | eng | pt_PT |
| dc.publisher | Elsevier | pt_PT |
| dc.relation.ispartofseries | Microchemical Journal; Vol. 98, Issue 1 | |
| dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0026265X10002122 | pt_PT |
| dc.subject | Trimethoprim | pt_PT |
| dc.subject | Potentiometry | pt_PT |
| dc.subject | Ion selective sensors | pt_PT |
| dc.subject | Molecularly imprinted polymers | pt_PT |
| dc.subject | Aquaculture water | pt_PT |
| dc.title | Trimethoprim-selective electrodes with molecularly imprinted polymers acting as ionophores and potentiometric transduction on graphite solid-contact | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 28 | pt_PT |
| oaire.citation.startPage | 21 | pt_PT |
| oaire.citation.title | Microchemical Journal | pt_PT |
| oaire.citation.volume | 98 | pt_PT |
| person.familyName | Ferreira Sales | |
| person.givenName | Maria Goreti | |
| person.identifier | 826970 | |
| person.identifier.ciencia-id | E31F-1630-42BB | |
| person.identifier.orcid | 0000-0001-9936-7336 | |
| person.identifier.rid | K-9199-2013 | |
| person.identifier.scopus-author-id | 7005174717 | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |
| relation.isAuthorOfPublication | b6d3a2d0-608a-4a92-834b-8d7b29069fef | |
| relation.isAuthorOfPublication.latestForDiscovery | b6d3a2d0-608a-4a92-834b-8d7b29069fef |