Publication
Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination
| Summary: | A sensitive voltammetric method for trace measurements of gold(III) ions using a screen-printed carbon electrode modified with poly-L-histidine is described. The new procedure is based on the accumulation of the tetrachloroaurates complex at the electrode surface under an open circuit potential condition, followed by a cathodic stripping scan of potential. Parameters such as film preparation, pH, accumulation potential and deposition time have been optimized to obtain the best voltammetric response. Using optimal experimental conditions, analytical curves for gold ions were obtained using a linear sweep (LSV), differential pulse (DPV), and square wave voltammetry (SWV). Limits of detection of 6.0 × 10-6 mol L-1, 1.7 × 10-6 mol L-1 and 4.0 × 10-6 mol L-1 were estimated for the LSV, DPV and SWV, respectively. The method was successfully applied to the determination of gold ions in human urine samples. |
|---|---|
| Main Authors: | Bergamini,Márcio F. |
| Other Authors: | Santos,Daniela P.; Zanoni,Maria Valnice B. |
| Subject: | screen-printed electrode poly-L-histidine gold ions stripping voltammetry |
| Year: | 2009 |
| Country: | Brazil |
| Document type: | article |
| Access type: | open access |
| Associated institution: | IBICT |
| Language: | English |
| Origin: | Oasisbr |
| _version_ | 1871506572085035008 |
|---|---|
| author | Bergamini,Márcio F. |
| author2 | Santos,Daniela P. Zanoni,Maria Valnice B. |
| author2_role | author author |
| author_facet | Bergamini,Márcio F. Santos,Daniela P. Zanoni,Maria Valnice B. |
| author_role | author |
| country_str | BR |
| creators_json_txt | [{\"Person.name\":\"Bergamini,Márcio F.\"},{\"Person.name\":\"Santos,Daniela P.\"},{\"Person.name\":\"Zanoni,Maria Valnice B.\"}] |
| datacite.creators.creator.creatorName.fl_str_mv | Bergamini,Márcio F. Santos,Daniela P. Zanoni,Maria Valnice B. |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | screen-printed electrode poly-L-histidine gold ions stripping voltammetry |
| datacite.titles.title.fl_str_mv | Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination |
| dc.creator.none.fl_str_mv | Bergamini,Márcio F. Santos,Daniela P. Zanoni,Maria Valnice B. |
| dc.format.none.fl_str_mv | text/html |
| dc.identifier.none.fl_str_mv | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000100017 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Sociedade Brasileira de Química |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.source.none.fl_str_mv | Journal of the Brazilian Chemical Society v.20 n.1 2009 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
| dc.subject.none.fl_str_mv | screen-printed electrode poly-L-histidine gold ions stripping voltammetry |
| dc.title.fl_str_mv | Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | A sensitive voltammetric method for trace measurements of gold(III) ions using a screen-printed carbon electrode modified with poly-L-histidine is described. The new procedure is based on the accumulation of the tetrachloroaurates complex at the electrode surface under an open circuit potential condition, followed by a cathodic stripping scan of potential. Parameters such as film preparation, pH, accumulation potential and deposition time have been optimized to obtain the best voltammetric response. Using optimal experimental conditions, analytical curves for gold ions were obtained using a linear sweep (LSV), differential pulse (DPV), and square wave voltammetry (SWV). Limits of detection of 6.0 × 10-6 mol L-1, 1.7 × 10-6 mol L-1 and 4.0 × 10-6 mol L-1 were estimated for the LSV, DPV and SWV, respectively. The method was successfully applied to the determination of gold ions in human urine samples. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| id | oasisbr_c371c75197a88455d1de6d79fd600302 |
| identifier.url.fl_str_mv | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000100017 |
| inst_facet_str | urn:organizationAcronym:oasisbr{{{_:::_}}}IBICT |
| instacron_str | OASISBR |
| institution | IBICT |
| instname_str | IBICT |
| language | eng |
| network_acronym_str | oasisbr |
| network_name_str | Oasisbr |
| oai_identifier_str | oai:scielo:S0103-50532009000100017 |
| organization_str_mv | urn:organizationAcronym:oasisbr |
| person_str_mv | Bergamini,Márcio F. Santos,Daniela P. Zanoni,Maria Valnice B. |
| publishDate | 2009 |
| publisher.none.fl_str_mv | Sociedade Brasileira de Química |
| repo_facet_str | urn:repositoryAcronym:oasisbr{{{_:::_}}}Oasisbr |
| reponame_str | Oasisbr |
| repository_id_str | urn:repositoryAcronym:oasisbr |
| service_str_mv | urn:repositoryAcronym:oasisbr |
| spelling | Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determinationBergamini,Márcio F.Santos,Daniela P.Zanoni,Maria Valnice B.screen-printed electrodepoly-L-histidinegold ionsstripping voltammetryopen accesshttp://purl.org/coar/access_right/c_abf2http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000100017URLhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000100017URLHasVersion2009-01-01A sensitive voltammetric method for trace measurements of gold(III) ions using a screen-printed carbon electrode modified with poly-L-histidine is described. The new procedure is based on the accumulation of the tetrachloroaurates complex at the electrode surface under an open circuit potential condition, followed by a cathodic stripping scan of potential. Parameters such as film preparation, pH, accumulation potential and deposition time have been optimized to obtain the best voltammetric response. Using optimal experimental conditions, analytical curves for gold ions were obtained using a linear sweep (LSV), differential pulse (DPV), and square wave voltammetry (SWV). Limits of detection of 6.0 × 10-6 mol L-1, 1.7 × 10-6 mol L-1 and 4.0 × 10-6 mol L-1 were estimated for the LSV, DPV and SWV, respectively. The method was successfully applied to the determination of gold ions in human urine samples.engtext/htmlSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.20 n.1 2009reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQjournal articlehttp://purl.org/coar/resource_type/c_6501literatureVoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85 |
| spellingShingle | Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination Bergamini,Márcio F. screen-printed electrode poly-L-histidine gold ions stripping voltammetry |
| status | SINGLETON |
| status_str | VoR |
| subject.fl_str_mv | screen-printed electrode poly-L-histidine gold ions stripping voltammetry |
| title | Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination |
| title_full | Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination |
| title_fullStr | Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination |
| title_full_unstemmed | Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination |
| title_short | Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination |
| title_sort | Screen-printed carbon electrode modified with poly-L-histidine applied to gold(III) determination |
| topic | screen-printed electrode poly-L-histidine gold ions stripping voltammetry |
| topic_facet | screen-printed electrode poly-L-histidine gold ions stripping voltammetry |
| url | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000100017 |
| visible | 1 |
Funded activities
No funded projects found.