Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.14/38598 |
Resumo: | A spectrophotometric flow-based method for the determination of nickel in recreational waters is proposed. In this scenario, the strategy was to devise a miniaturized and automatic system based on sequential injection analysis, aiming for an expeditious, real-time and low-cost determination. For the spectrophotometric determination, dimethylglyoxime was used as color reagent due to its selectivity for nickel. Considering the expected low concentration and low sensitivity of the coloured reaction, a long pathlength flow cell was used to increase the sensitivity. The potential interference of metal ions commonly present in freshwaters was assessed and no significant differences ( < 10%) were observed, except for manganese. This interference was overcome by adding manganese to the reagent, thus acting as a fixed interference strategy. The limit of detection and quantification were 6.3 and 21.1 µg L−1, respectively. The method was applied to the quantification of nickel in certified water samples and the results were in agreement with the certified values. Additionally, the method was successfully applied to the quantification of nickel in spiked freshwaters and the results were in agreement with those obtained with the reference method. |
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Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural watersNi(II)Sequential injection analysisLWCCDMGA spectrophotometric flow-based method for the determination of nickel in recreational waters is proposed. In this scenario, the strategy was to devise a miniaturized and automatic system based on sequential injection analysis, aiming for an expeditious, real-time and low-cost determination. For the spectrophotometric determination, dimethylglyoxime was used as color reagent due to its selectivity for nickel. Considering the expected low concentration and low sensitivity of the coloured reaction, a long pathlength flow cell was used to increase the sensitivity. The potential interference of metal ions commonly present in freshwaters was assessed and no significant differences ( < 10%) were observed, except for manganese. This interference was overcome by adding manganese to the reagent, thus acting as a fixed interference strategy. The limit of detection and quantification were 6.3 and 21.1 µg L−1, respectively. The method was applied to the quantification of nickel in certified water samples and the results were in agreement with the certified values. Additionally, the method was successfully applied to the quantification of nickel in spiked freshwaters and the results were in agreement with those obtained with the reference method.Veritati - Repositório Institucional da Universidade Católica PortuguesaRibas, Tânia C. F.Mesquita, Raquel B. R.Rangel, António O. S. S.2022-08-12T09:23:58Z2022-122022-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.14/38598eng2666-831910.1016/j.talo.2022.10013285135302072info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-09T01:36:15Zoai:repositorio.ucp.pt:10400.14/38598Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:31:31.486489Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters |
title |
Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters |
spellingShingle |
Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters Ribas, Tânia C. F. Ni(II) Sequential injection analysis LWCC DMG |
title_short |
Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters |
title_full |
Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters |
title_fullStr |
Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters |
title_full_unstemmed |
Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters |
title_sort |
Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters |
author |
Ribas, Tânia C. F. |
author_facet |
Ribas, Tânia C. F. Mesquita, Raquel B. R. Rangel, António O. S. S. |
author_role |
author |
author2 |
Mesquita, Raquel B. R. Rangel, António O. S. S. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Veritati - Repositório Institucional da Universidade Católica Portuguesa |
dc.contributor.author.fl_str_mv |
Ribas, Tânia C. F. Mesquita, Raquel B. R. Rangel, António O. S. S. |
dc.subject.por.fl_str_mv |
Ni(II) Sequential injection analysis LWCC DMG |
topic |
Ni(II) Sequential injection analysis LWCC DMG |
description |
A spectrophotometric flow-based method for the determination of nickel in recreational waters is proposed. In this scenario, the strategy was to devise a miniaturized and automatic system based on sequential injection analysis, aiming for an expeditious, real-time and low-cost determination. For the spectrophotometric determination, dimethylglyoxime was used as color reagent due to its selectivity for nickel. Considering the expected low concentration and low sensitivity of the coloured reaction, a long pathlength flow cell was used to increase the sensitivity. The potential interference of metal ions commonly present in freshwaters was assessed and no significant differences ( < 10%) were observed, except for manganese. This interference was overcome by adding manganese to the reagent, thus acting as a fixed interference strategy. The limit of detection and quantification were 6.3 and 21.1 µg L−1, respectively. The method was applied to the quantification of nickel in certified water samples and the results were in agreement with the certified values. Additionally, the method was successfully applied to the quantification of nickel in spiked freshwaters and the results were in agreement with those obtained with the reference method. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-08-12T09:23:58Z 2022-12 2022-12-01T00:00:00Z |
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://hdl.handle.net/10400.14/38598 |
url |
http://hdl.handle.net/10400.14/38598 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2666-8319 10.1016/j.talo.2022.100132 85135302072 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132038461128704 |