High current-density anodic electro-dissolution in flow-injection systems for the determination of aluminium, copper and zinc in non-ferroalloys by flame atomic absorption spectrometry
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1155/S1463924699000036 http://hdl.handle.net/11449/33786 |
Resumo: | An automatic Procedure with a high current-density anodic electrodissolution unit (HDAE) is proposed for the determination of aluminium, copper and zinc in non-ferroalloys by flame atonic absorption spectrometry, based on the direct solid analysis. It consists of solenoid valve-based commutation in a flow-injection system for on-line sample electro-dissolution and calibration with one multi-element standard, an electrolytic cell equipped with two electrodes (a silver needle acts as cathode, and sample as anode), and an intelligent unit. The latter is assembled in a PC-compatible microcomputer for instrument control, and far data acquisition and processing. General management of the process is achieved by use of software written in Pascal. Electrolyte compositions, flow rates, commutation times, applied current and electrolysis time mere investigated. A 0.5 mol l(-1) HNO3 solution was elected as electrolyte and 300 A/cm(2) as the continuous current pulse. The performance of the proposed system was evaluated by analysing aluminium in Al-allay samples, and copper/zinc in brass and bronze samples, respectively. The system handles about 50 samples per hour. Results are precise (R.S.D < 2%) and in agreement with those obtained by ICP-AES and spectrophotometry at a 95% confidence level. |
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Repositório Institucional da UNESP |
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spelling |
High current-density anodic electro-dissolution in flow-injection systems for the determination of aluminium, copper and zinc in non-ferroalloys by flame atomic absorption spectrometryAn automatic Procedure with a high current-density anodic electrodissolution unit (HDAE) is proposed for the determination of aluminium, copper and zinc in non-ferroalloys by flame atonic absorption spectrometry, based on the direct solid analysis. It consists of solenoid valve-based commutation in a flow-injection system for on-line sample electro-dissolution and calibration with one multi-element standard, an electrolytic cell equipped with two electrodes (a silver needle acts as cathode, and sample as anode), and an intelligent unit. The latter is assembled in a PC-compatible microcomputer for instrument control, and far data acquisition and processing. General management of the process is achieved by use of software written in Pascal. Electrolyte compositions, flow rates, commutation times, applied current and electrolysis time mere investigated. A 0.5 mol l(-1) HNO3 solution was elected as electrolyte and 300 A/cm(2) as the continuous current pulse. The performance of the proposed system was evaluated by analysing aluminium in Al-allay samples, and copper/zinc in brass and bronze samples, respectively. The system handles about 50 samples per hour. Results are precise (R.S.D < 2%) and in agreement with those obtained by ICP-AES and spectrophotometry at a 95% confidence level.Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, BrazilUNESP, Inst Quim, Dept Quim Analit, BR-14800900 Araraquara, SP, BrazilUNESP, Inst Quim, Dept Quim Analit, BR-14800900 Araraquara, SP, BrazilTaylor & Francis LtdUniversidade Federal de Santa Catarina (UFSC)Universidade Estadual Paulista (Unesp)Giacomozzi, C. A.Queiroz, RRUSouza, I. G.Neto, JAG2014-05-20T15:22:53Z2014-05-20T15:22:53Z1999-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article17-22application/pdfhttp://dx.doi.org/10.1155/S1463924699000036Journal of Automated Methods & Management In Chemistry. London: Taylor & Francis Ltd, v. 21, n. 1, p. 17-22, 1999.1463-9246http://hdl.handle.net/11449/3378610.1155/S1463924699000036WOS:000080118700003WOS000080118700003.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Automated Methods & Management In Chemistryinfo:eu-repo/semantics/openAccess2023-10-19T06:03:30Zoai:repositorio.unesp.br:11449/33786Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-19T06:03:30Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
High current-density anodic electro-dissolution in flow-injection systems for the determination of aluminium, copper and zinc in non-ferroalloys by flame atomic absorption spectrometry |
title |
High current-density anodic electro-dissolution in flow-injection systems for the determination of aluminium, copper and zinc in non-ferroalloys by flame atomic absorption spectrometry |
spellingShingle |
High current-density anodic electro-dissolution in flow-injection systems for the determination of aluminium, copper and zinc in non-ferroalloys by flame atomic absorption spectrometry Giacomozzi, C. A. |
title_short |
High current-density anodic electro-dissolution in flow-injection systems for the determination of aluminium, copper and zinc in non-ferroalloys by flame atomic absorption spectrometry |
title_full |
High current-density anodic electro-dissolution in flow-injection systems for the determination of aluminium, copper and zinc in non-ferroalloys by flame atomic absorption spectrometry |
title_fullStr |
High current-density anodic electro-dissolution in flow-injection systems for the determination of aluminium, copper and zinc in non-ferroalloys by flame atomic absorption spectrometry |
title_full_unstemmed |
High current-density anodic electro-dissolution in flow-injection systems for the determination of aluminium, copper and zinc in non-ferroalloys by flame atomic absorption spectrometry |
title_sort |
High current-density anodic electro-dissolution in flow-injection systems for the determination of aluminium, copper and zinc in non-ferroalloys by flame atomic absorption spectrometry |
author |
Giacomozzi, C. A. |
author_facet |
Giacomozzi, C. A. Queiroz, RRU Souza, I. G. Neto, JAG |
author_role |
author |
author2 |
Queiroz, RRU Souza, I. G. Neto, JAG |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Santa Catarina (UFSC) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Giacomozzi, C. A. Queiroz, RRU Souza, I. G. Neto, JAG |
description |
An automatic Procedure with a high current-density anodic electrodissolution unit (HDAE) is proposed for the determination of aluminium, copper and zinc in non-ferroalloys by flame atonic absorption spectrometry, based on the direct solid analysis. It consists of solenoid valve-based commutation in a flow-injection system for on-line sample electro-dissolution and calibration with one multi-element standard, an electrolytic cell equipped with two electrodes (a silver needle acts as cathode, and sample as anode), and an intelligent unit. The latter is assembled in a PC-compatible microcomputer for instrument control, and far data acquisition and processing. General management of the process is achieved by use of software written in Pascal. Electrolyte compositions, flow rates, commutation times, applied current and electrolysis time mere investigated. A 0.5 mol l(-1) HNO3 solution was elected as electrolyte and 300 A/cm(2) as the continuous current pulse. The performance of the proposed system was evaluated by analysing aluminium in Al-allay samples, and copper/zinc in brass and bronze samples, respectively. The system handles about 50 samples per hour. Results are precise (R.S.D < 2%) and in agreement with those obtained by ICP-AES and spectrophotometry at a 95% confidence level. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999-01-01 2014-05-20T15:22:53Z 2014-05-20T15:22:53Z |
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/10.1155/S1463924699000036 Journal of Automated Methods & Management In Chemistry. London: Taylor & Francis Ltd, v. 21, n. 1, p. 17-22, 1999. 1463-9246 http://hdl.handle.net/11449/33786 10.1155/S1463924699000036 WOS:000080118700003 WOS000080118700003.pdf |
url |
http://dx.doi.org/10.1155/S1463924699000036 http://hdl.handle.net/11449/33786 |
identifier_str_mv |
Journal of Automated Methods & Management In Chemistry. London: Taylor & Francis Ltd, v. 21, n. 1, p. 17-22, 1999. 1463-9246 10.1155/S1463924699000036 WOS:000080118700003 WOS000080118700003.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Automated Methods & Management In Chemistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
17-22 application/pdf |
dc.publisher.none.fl_str_mv |
Taylor & Francis Ltd |
publisher.none.fl_str_mv |
Taylor & Francis Ltd |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1803649455739633664 |