A Polymer Inclusion Membrane for Sensing Metal Complexation in Natural Waters
Metal speciation studies are of great importance in assessing metal bioavailability in aquatic environments. Functionalized membranes are a simple tool to perform metal chemical speciation. In this study, we have prepared and tested a polymer inclusion membrane (PIM) made of the polymer cellulose tr...
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MDPI AG
2021
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oai:doaj.org-article:2cfa703c5d9d449982889ce552105ade2021-11-11T15:24:00ZA Polymer Inclusion Membrane for Sensing Metal Complexation in Natural Waters10.3390/app1121104042076-3417https://doaj.org/article/2cfa703c5d9d449982889ce552105ade2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10404https://doaj.org/toc/2076-3417Metal speciation studies are of great importance in assessing metal bioavailability in aquatic environments. Functionalized membranes are a simple tool to perform metal chemical speciation. In this study, we have prepared and tested a polymer inclusion membrane (PIM) made of the polymer cellulose triacetate (CTA), the extractant di-(2-ethylhexyl) phosphoric acid (D2EHPA), and the plasticizer 2-nitrophenyloctyl ether (NPOE) as a sensor for Zn and Cu complexation studies. This PIM, incorporated in a device with an 0.01 M HNO<sub>3</sub> receiving solution, is shown to effectively transport free metal ions, and it is demonstrated that the presence of ligands that form stable complexes with divalent metallic ions, such as ethylenediaminetetraacetic acid (EDTA) and humic acid (HA), greatly influences the accumulation of the metals in the receiving phase due to the increasing metal fraction complexed in the feed phase. Moreover, the effect of major ions found in natural waters has been investigated, and it is found that the presence of calcium did not decrease the accumulation of either Zn or Cu. Finally, the PIM sensor has been used successfully to evaluate metal complexation in a river water affected by Zn pollution.Berta AlcaldeEnriqueta AnticóClàudia FontàsMDPI AGarticlepolymer inclusion membranemetal complexationZnCuriver waterTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10404, p 10404 (2021) |
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DOAJ |
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DOAJ |
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EN |
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polymer inclusion membrane metal complexation Zn Cu river water Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 |
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polymer inclusion membrane metal complexation Zn Cu river water Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Berta Alcalde Enriqueta Anticó Clàudia Fontàs A Polymer Inclusion Membrane for Sensing Metal Complexation in Natural Waters |
| description |
Metal speciation studies are of great importance in assessing metal bioavailability in aquatic environments. Functionalized membranes are a simple tool to perform metal chemical speciation. In this study, we have prepared and tested a polymer inclusion membrane (PIM) made of the polymer cellulose triacetate (CTA), the extractant di-(2-ethylhexyl) phosphoric acid (D2EHPA), and the plasticizer 2-nitrophenyloctyl ether (NPOE) as a sensor for Zn and Cu complexation studies. This PIM, incorporated in a device with an 0.01 M HNO<sub>3</sub> receiving solution, is shown to effectively transport free metal ions, and it is demonstrated that the presence of ligands that form stable complexes with divalent metallic ions, such as ethylenediaminetetraacetic acid (EDTA) and humic acid (HA), greatly influences the accumulation of the metals in the receiving phase due to the increasing metal fraction complexed in the feed phase. Moreover, the effect of major ions found in natural waters has been investigated, and it is found that the presence of calcium did not decrease the accumulation of either Zn or Cu. Finally, the PIM sensor has been used successfully to evaluate metal complexation in a river water affected by Zn pollution. |
| format |
article |
| author |
Berta Alcalde Enriqueta Anticó Clàudia Fontàs |
| author_facet |
Berta Alcalde Enriqueta Anticó Clàudia Fontàs |
| author_sort |
Berta Alcalde |
| title |
A Polymer Inclusion Membrane for Sensing Metal Complexation in Natural Waters |
| title_short |
A Polymer Inclusion Membrane for Sensing Metal Complexation in Natural Waters |
| title_full |
A Polymer Inclusion Membrane for Sensing Metal Complexation in Natural Waters |
| title_fullStr |
A Polymer Inclusion Membrane for Sensing Metal Complexation in Natural Waters |
| title_full_unstemmed |
A Polymer Inclusion Membrane for Sensing Metal Complexation in Natural Waters |
| title_sort |
polymer inclusion membrane for sensing metal complexation in natural waters |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/2cfa703c5d9d449982889ce552105ade |
| work_keys_str_mv |
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