Use of a Polymer Inclusion Membrane and a Chelating Resin for the Flow-Based Sequential Determination of Copper(II) and Zinc(II) in Natural Waters and Soil Leachates
A bi-parametric sequential injection method for the determination of copper(II) and zinc(II) when present together in aqueous samples was developed. This was achieved by using a non-specific colorimetric reagent (4-(2-pyridylazo)resorcinol, PAR) together with two ion-exchange polymeric materials to...
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| Format: | Article |
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MDPI AG
2020-10-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/25/21/5062 |
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| author | Tânia C. F. Ribas Charles F. Croft M. Inês G. S. Almeida Raquel B. R. Mesquita Spas D. Kolev António O. S. S. Rangel |
| author_facet | Tânia C. F. Ribas Charles F. Croft M. Inês G. S. Almeida Raquel B. R. Mesquita Spas D. Kolev António O. S. S. Rangel |
| author_sort | Tânia C. F. Ribas |
| collection | DOAJ |
| description | A bi-parametric sequential injection method for the determination of copper(II) and zinc(II) when present together in aqueous samples was developed. This was achieved by using a non-specific colorimetric reagent (4-(2-pyridylazo)resorcinol, PAR) together with two ion-exchange polymeric materials to discriminate between the two metal ions. A polymer inclusion membrane (PIM) and a chelating resin (Chelex 100) were the chosen materials to retain zinc(II) and copper(II), respectively. The influence of the flow system parameters, such as composition of the reagent solutions, flow rates and standard/sample volume, on the method sensitivity were studied. The interference of several common metal ions was assessed, and no significant interferences were observed (<10% signal deviation). The limits of detection were 3.1 and 5.6 µg L<sup>−1</sup> for copper(II) and zinc(II), respectively; the dynamic working range was from 10 to 40 µg L<sup>−1</sup> for both analytes. The newly developed sequential injection analysis (SIA) system was applied to natural waters and soil leachates, and the results were in agreement with those obtained with the reference procedure. |
| first_indexed | 2024-03-10T15:10:54Z |
| format | Article |
| id | doaj.art-537f88dd99244a0986aae387a3581c61 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T15:10:54Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-537f88dd99244a0986aae387a3581c612023-11-20T19:20:10ZengMDPI AGMolecules1420-30492020-10-012521506210.3390/molecules25215062Use of a Polymer Inclusion Membrane and a Chelating Resin for the Flow-Based Sequential Determination of Copper(II) and Zinc(II) in Natural Waters and Soil LeachatesTânia C. F. Ribas0Charles F. Croft1M. Inês G. S. Almeida2Raquel B. R. Mesquita3Spas D. Kolev4António O. S. S. Rangel5CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, PortugalSchool of Chemistry, University of Melbourne, Melbourne 3010, VIC, AustraliaSchool of Chemistry, University of Melbourne, Melbourne 3010, VIC, AustraliaCBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, PortugalSchool of Chemistry, University of Melbourne, Melbourne 3010, VIC, AustraliaCBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, PortugalA bi-parametric sequential injection method for the determination of copper(II) and zinc(II) when present together in aqueous samples was developed. This was achieved by using a non-specific colorimetric reagent (4-(2-pyridylazo)resorcinol, PAR) together with two ion-exchange polymeric materials to discriminate between the two metal ions. A polymer inclusion membrane (PIM) and a chelating resin (Chelex 100) were the chosen materials to retain zinc(II) and copper(II), respectively. The influence of the flow system parameters, such as composition of the reagent solutions, flow rates and standard/sample volume, on the method sensitivity were studied. The interference of several common metal ions was assessed, and no significant interferences were observed (<10% signal deviation). The limits of detection were 3.1 and 5.6 µg L<sup>−1</sup> for copper(II) and zinc(II), respectively; the dynamic working range was from 10 to 40 µg L<sup>−1</sup> for both analytes. The newly developed sequential injection analysis (SIA) system was applied to natural waters and soil leachates, and the results were in agreement with those obtained with the reference procedure.https://www.mdpi.com/1420-3049/25/21/5062bi-parametric methodsequential injection analysismicronutrientspolymer inclusion membraneChelex 100 |
| spellingShingle | Tânia C. F. Ribas Charles F. Croft M. Inês G. S. Almeida Raquel B. R. Mesquita Spas D. Kolev António O. S. S. Rangel Use of a Polymer Inclusion Membrane and a Chelating Resin for the Flow-Based Sequential Determination of Copper(II) and Zinc(II) in Natural Waters and Soil Leachates Molecules bi-parametric method sequential injection analysis micronutrients polymer inclusion membrane Chelex 100 |
| title | Use of a Polymer Inclusion Membrane and a Chelating Resin for the Flow-Based Sequential Determination of Copper(II) and Zinc(II) in Natural Waters and Soil Leachates |
| title_full | Use of a Polymer Inclusion Membrane and a Chelating Resin for the Flow-Based Sequential Determination of Copper(II) and Zinc(II) in Natural Waters and Soil Leachates |
| title_fullStr | Use of a Polymer Inclusion Membrane and a Chelating Resin for the Flow-Based Sequential Determination of Copper(II) and Zinc(II) in Natural Waters and Soil Leachates |
| title_full_unstemmed | Use of a Polymer Inclusion Membrane and a Chelating Resin for the Flow-Based Sequential Determination of Copper(II) and Zinc(II) in Natural Waters and Soil Leachates |
| title_short | Use of a Polymer Inclusion Membrane and a Chelating Resin for the Flow-Based Sequential Determination of Copper(II) and Zinc(II) in Natural Waters and Soil Leachates |
| title_sort | use of a polymer inclusion membrane and a chelating resin for the flow based sequential determination of copper ii and zinc ii in natural waters and soil leachates |
| topic | bi-parametric method sequential injection analysis micronutrients polymer inclusion membrane Chelex 100 |
| url | https://www.mdpi.com/1420-3049/25/21/5062 |
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