PVC-based ion-selective electrodes with a silicone rubber outer coating with improved analytical performance
An outer layer of pure silicone rubber (SR), i.e. SR without any plasticizer, ionophore, or lipophilic anion, was applied on top of a conventional poly(vinyl chloride) (PVC) based K+-selective membrane in a solid-contact ion-selective electrode (SC-ISE). The influence of the outer SR coating on the...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/149238 |
| _version_ | 1811680579700129792 |
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| author | Joon, Narender Kumar He, Ning Ruzgas, Tautgirdas Bobacka, Johan Lisak, Grzegorz |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Joon, Narender Kumar He, Ning Ruzgas, Tautgirdas Bobacka, Johan Lisak, Grzegorz |
| author_sort | Joon, Narender Kumar |
| collection | NTU |
| description | An outer layer of pure silicone rubber (SR), i.e. SR without any plasticizer, ionophore, or lipophilic anion, was applied on top of a conventional poly(vinyl chloride) (PVC) based K+-selective membrane in a solid-contact ion-selective electrode (SC-ISE). The influence of the outer SR coating on the analytical performance of the K+-ISEs was studied. The presence of the SR coating did not affect the selectivity of the SC-ISE, indicating that the plasticizer, ionophore, and lipophilic anion are spontaneously distributed from the PVC-based membrane into the SR layer. This was confirmed by electrochemical impedance spectroscopy (EIS). Interestingly, the reproducibility of the standard potential of the conditioned SC-ISE was significantly improved from E0 ± 35.3 mV to E0 ± 3.5 mV simply by adding the SR coating on top of the plasticized PVC based K+-selective membrane. Moreover, the adsorption of bovine serum albumin (BSA) was significantly reduced at the SR coated ion-selective membrane. Thus, the addition of a SR coating on a plasticized PVC ion-selective membrane seems to be a feasible method to improve the analytical performance and to reduce the biofouling of potentiometric ion sensors. |
| first_indexed | 2024-10-01T03:27:18Z |
| format | Journal Article |
| id | ntu-10356/149238 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:27:18Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1492382021-06-05T20:11:21Z PVC-based ion-selective electrodes with a silicone rubber outer coating with improved analytical performance Joon, Narender Kumar He, Ning Ruzgas, Tautgirdas Bobacka, Johan Lisak, Grzegorz School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Science::Chemistry::Analytical chemistry Coating Materials Adsorption An outer layer of pure silicone rubber (SR), i.e. SR without any plasticizer, ionophore, or lipophilic anion, was applied on top of a conventional poly(vinyl chloride) (PVC) based K+-selective membrane in a solid-contact ion-selective electrode (SC-ISE). The influence of the outer SR coating on the analytical performance of the K+-ISEs was studied. The presence of the SR coating did not affect the selectivity of the SC-ISE, indicating that the plasticizer, ionophore, and lipophilic anion are spontaneously distributed from the PVC-based membrane into the SR layer. This was confirmed by electrochemical impedance spectroscopy (EIS). Interestingly, the reproducibility of the standard potential of the conditioned SC-ISE was significantly improved from E0 ± 35.3 mV to E0 ± 3.5 mV simply by adding the SR coating on top of the plasticized PVC based K+-selective membrane. Moreover, the adsorption of bovine serum albumin (BSA) was significantly reduced at the SR coated ion-selective membrane. Thus, the addition of a SR coating on a plasticized PVC ion-selective membrane seems to be a feasible method to improve the analytical performance and to reduce the biofouling of potentiometric ion sensors. Accepted version 2021-05-30T14:10:26Z 2021-05-30T14:10:26Z 2019 Journal Article Joon, N. K., He, N., Ruzgas, T., Bobacka, J. & Lisak, G. (2019). PVC-based ion-selective electrodes with a silicone rubber outer coating with improved analytical performance. Analytical Chemistry, 91(16), 10524-10531. https://dx.doi.org/10.1021/acs.analchem.9b01490 1520-6882 0000-0003-2121-8212 0000-0003-2875-7243 0000-0002-5087-7113 0000-0002-7137-4603 0000-0002-8995-2176 0000-0002-6967-0155 https://hdl.handle.net/10356/149238 10.1021/acs.analchem.9b01490 31333015 2-s2.0-85071707447 16 91 10524 10531 en Analytical Chemistry This document is the Accepted Manuscript version of a Published Work that appeared in final form in Analytical Chemistry, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.analchem.9b01490 application/pdf |
| spellingShingle | Science::Chemistry::Analytical chemistry Coating Materials Adsorption Joon, Narender Kumar He, Ning Ruzgas, Tautgirdas Bobacka, Johan Lisak, Grzegorz PVC-based ion-selective electrodes with a silicone rubber outer coating with improved analytical performance |
| title | PVC-based ion-selective electrodes with a silicone rubber outer coating with improved analytical performance |
| title_full | PVC-based ion-selective electrodes with a silicone rubber outer coating with improved analytical performance |
| title_fullStr | PVC-based ion-selective electrodes with a silicone rubber outer coating with improved analytical performance |
| title_full_unstemmed | PVC-based ion-selective electrodes with a silicone rubber outer coating with improved analytical performance |
| title_short | PVC-based ion-selective electrodes with a silicone rubber outer coating with improved analytical performance |
| title_sort | pvc based ion selective electrodes with a silicone rubber outer coating with improved analytical performance |
| topic | Science::Chemistry::Analytical chemistry Coating Materials Adsorption |
| url | https://hdl.handle.net/10356/149238 |
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