Novel Organic Membrane-based Thin-film Microsensors for the Determination of Heavy Metal Cations
A first step towards the fabrication and electrochemical evaluation of thin-filmmicrosensors based on organic PVC membranes for the determination of Hg(II), Cd(II),Pb(II) and Cu(II) ions in solutions has been realised. The membrane-coating mixture used inthe preparation of this new type of microsens...
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| Format: | Article |
| Language: | English |
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MDPI AG
2006-04-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/6/4/435/ |
| _version_ | 1798042486258532352 |
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| author | Michael J. Schöning Joachim P. Kloock Hassan A. Arida |
| author_facet | Michael J. Schöning Joachim P. Kloock Hassan A. Arida |
| author_sort | Michael J. Schöning |
| collection | DOAJ |
| description | A first step towards the fabrication and electrochemical evaluation of thin-filmmicrosensors based on organic PVC membranes for the determination of Hg(II), Cd(II),Pb(II) and Cu(II) ions in solutions has been realised. The membrane-coating mixture used inthe preparation of this new type of microsensors is incorporating PVC as supporting matrix,o-nitrophenyloctylether (o-NPOE) as solvent mediator and a recently synthesizedHg[dimethylglyoxime(phene)]2+ and Bis-(4-hydroxyacetophenone)-ethylenediamine aselectroactive materials for Hg(II) and Cd(II), respectively. A set of three commercialisedionophores for Cd(II), Pb(II) and Cu(II) has been also used for comparison. Thin-filmmicrosensors based on these membranes showed a Nernstian response of slope(26-30 mV/dec.) for the respective tested cations. The potentiometric responsecharacteristics (linear range, pH range, detection limit and response time) are comparablewith those obtained by conventional membranes as well as coated wire electrodes preparedfrom the same membrane. The realisation of the new organic membrane-based thin-filmmicrosensors overcomes the problem of an insufficient selectivity of solid-state-based thin-film sensors. |
| first_indexed | 2024-04-11T22:36:11Z |
| format | Article |
| id | doaj.art-d81120e2d80a4753be8bfc8450a28807 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:36:11Z |
| publishDate | 2006-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-d81120e2d80a4753be8bfc8450a288072022-12-22T03:59:13ZengMDPI AGSensors1424-82202006-04-016443544410.3390/s6040435Novel Organic Membrane-based Thin-film Microsensors for the Determination of Heavy Metal CationsMichael J. SchöningJoachim P. KloockHassan A. AridaA first step towards the fabrication and electrochemical evaluation of thin-filmmicrosensors based on organic PVC membranes for the determination of Hg(II), Cd(II),Pb(II) and Cu(II) ions in solutions has been realised. The membrane-coating mixture used inthe preparation of this new type of microsensors is incorporating PVC as supporting matrix,o-nitrophenyloctylether (o-NPOE) as solvent mediator and a recently synthesizedHg[dimethylglyoxime(phene)]2+ and Bis-(4-hydroxyacetophenone)-ethylenediamine aselectroactive materials for Hg(II) and Cd(II), respectively. A set of three commercialisedionophores for Cd(II), Pb(II) and Cu(II) has been also used for comparison. Thin-filmmicrosensors based on these membranes showed a Nernstian response of slope(26-30 mV/dec.) for the respective tested cations. The potentiometric responsecharacteristics (linear range, pH range, detection limit and response time) are comparablewith those obtained by conventional membranes as well as coated wire electrodes preparedfrom the same membrane. The realisation of the new organic membrane-based thin-filmmicrosensors overcomes the problem of an insufficient selectivity of solid-state-based thin-film sensors.http://www.mdpi.com/1424-8220/6/4/435/Heavy metal detectionthin-film microsensorsorganic PVC membranespotentiometry. |
| spellingShingle | Michael J. Schöning Joachim P. Kloock Hassan A. Arida Novel Organic Membrane-based Thin-film Microsensors for the Determination of Heavy Metal Cations Sensors Heavy metal detection thin-film microsensors organic PVC membranes potentiometry. |
| title | Novel Organic Membrane-based Thin-film Microsensors for the Determination of Heavy Metal Cations |
| title_full | Novel Organic Membrane-based Thin-film Microsensors for the Determination of Heavy Metal Cations |
| title_fullStr | Novel Organic Membrane-based Thin-film Microsensors for the Determination of Heavy Metal Cations |
| title_full_unstemmed | Novel Organic Membrane-based Thin-film Microsensors for the Determination of Heavy Metal Cations |
| title_short | Novel Organic Membrane-based Thin-film Microsensors for the Determination of Heavy Metal Cations |
| title_sort | novel organic membrane based thin film microsensors for the determination of heavy metal cations |
| topic | Heavy metal detection thin-film microsensors organic PVC membranes potentiometry. |
| url | http://www.mdpi.com/1424-8220/6/4/435/ |
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