Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Talanta Open |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666831922000492 |
| _version_ | 1811202165237088256 |
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| author | Tânia C.F. Ribas Raquel B.R. Mesquita António O.S.S. Rangel |
| author_facet | Tânia C.F. Ribas Raquel B.R. Mesquita António O.S.S. Rangel |
| author_sort | Tânia C.F. Ribas |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-12T02:34:14Z |
| format | Article |
| id | doaj.art-8032422209c9438aa357e5a2310de1dd |
| institution | Directory Open Access Journal |
| issn | 2666-8319 |
| language | English |
| last_indexed | 2024-04-12T02:34:14Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Talanta Open |
| spelling | doaj.art-8032422209c9438aa357e5a2310de1dd2022-12-22T03:51:36ZengElsevierTalanta Open2666-83192022-12-016100132Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural watersTânia C.F. Ribas0Raquel B.R. Mesquita1António O.S.S. Rangel2CBQF - Centro de Biotecnologia e Quwímica Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho, 1327, Porto 4169-005, PortugalCBQF - Centro de Biotecnologia e Quwímica Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho, 1327, Porto 4169-005, PortugalCorresponding author.; CBQF - Centro de Biotecnologia e Quwímica Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho, 1327, Porto 4169-005, PortugalA 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.http://www.sciencedirect.com/science/article/pii/S2666831922000492Ni(II)Sequential injection analysisLWCCDMG |
| spellingShingle | Tânia C.F. Ribas Raquel B.R. Mesquita António O.S.S. Rangel Use of dimethylglyoxime for the spectrophotometric flow-based determination of nickel in natural waters Talanta Open Ni(II) Sequential injection analysis LWCC DMG |
| title | 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_short | 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 |
| topic | Ni(II) Sequential injection analysis LWCC DMG |
| url | http://www.sciencedirect.com/science/article/pii/S2666831922000492 |
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