Corrective protocol to predict interference free sensor response for paper-based solution sampling coupled with heavy metal sensitive ion-selective electrodes
Paper-based microfluidics combined with potentiometric measurement has emerged as an attractive approach for detecting various chemical ionic moieties. Detection of heavy metal ions, using paper substrates as solution sampling and delivery systems remains challenging despite efforts to introduce sev...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/180536 |
| _version_ | 1826122435297017856 |
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| author | Yang, Mingpeng Silva, Rochelle Zhao, Ke Ding, Ruiyu Foo, Cyrus Jit Loong Ge, Liya Lisak, Grzegorz |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Yang, Mingpeng Silva, Rochelle Zhao, Ke Ding, Ruiyu Foo, Cyrus Jit Loong Ge, Liya Lisak, Grzegorz |
| author_sort | Yang, Mingpeng |
| collection | NTU |
| description | Paper-based microfluidics combined with potentiometric measurement has emerged as an attractive approach for detecting various chemical ionic moieties. Detection of heavy metal ions, using paper substrates as solution sampling and delivery systems remains challenging despite efforts to introduce several physico-chemical paper substrate modifications to stop adsorption of ions onto the paper substrates. This study quantitatively investigates the adsorption of heavy metal ions on the paper substrates during paper-based potentiometric measurements and explains the super-Nernstian response of potentiometric sensors through local depletion of heavy metal ions from the solution. Consequently, based on the investigated ion adsorption, a corrective potential protocol was established for the electrodes coupled with paper-based solution sampling by predicting interference free sensor response from paper-based measurement. Furthermore, the ion adsorption was also recorded for mixed metal ion solutions to understand competitive primary/interfering ions adsorption onto the paper substrates and establish corrective measures to predict interference free sensor response. In this method, no modifications of the paper substrates are necessary before actual potentiometric measurements. The proposed corrective protocol allows prediction of sensor response based on the paper-based solution sampling potentiometric measurement, providing a simple methodological approach based on correction of potential readout of the potentiometric sensor, thus completely resigning from the need of modifying paper substrate for measurements of heavy metal ions. |
| first_indexed | 2025-03-09T13:14:25Z |
| format | Journal Article |
| id | ntu-10356/180536 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-03-09T13:14:25Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1805362024-10-11T15:33:49Z Corrective protocol to predict interference free sensor response for paper-based solution sampling coupled with heavy metal sensitive ion-selective electrodes Yang, Mingpeng Silva, Rochelle Zhao, Ke Ding, Ruiyu Foo, Cyrus Jit Loong Ge, Liya Lisak, Grzegorz School of Civil and Environmental Engineering Interdisciplinary Graduate School (IGS) Residues and Resource Reclamation Centre Nanyang Environment and Water Research Institute Engineering Heavy metal ion Chemical detection Paper-based microfluidics combined with potentiometric measurement has emerged as an attractive approach for detecting various chemical ionic moieties. Detection of heavy metal ions, using paper substrates as solution sampling and delivery systems remains challenging despite efforts to introduce several physico-chemical paper substrate modifications to stop adsorption of ions onto the paper substrates. This study quantitatively investigates the adsorption of heavy metal ions on the paper substrates during paper-based potentiometric measurements and explains the super-Nernstian response of potentiometric sensors through local depletion of heavy metal ions from the solution. Consequently, based on the investigated ion adsorption, a corrective potential protocol was established for the electrodes coupled with paper-based solution sampling by predicting interference free sensor response from paper-based measurement. Furthermore, the ion adsorption was also recorded for mixed metal ion solutions to understand competitive primary/interfering ions adsorption onto the paper substrates and establish corrective measures to predict interference free sensor response. In this method, no modifications of the paper substrates are necessary before actual potentiometric measurements. The proposed corrective protocol allows prediction of sensor response based on the paper-based solution sampling potentiometric measurement, providing a simple methodological approach based on correction of potential readout of the potentiometric sensor, thus completely resigning from the need of modifying paper substrate for measurements of heavy metal ions. National Research Foundation (NRF) Public Utilities Board (PUB) Published version This research was supported by the National Research Foundation, Singapore, and PUB, Singapore’s National Water Agency, under its RIE2025 Urban Solutions and Sustainability (USS) (Water) Centre of Excellence (CoE) Programme, which provides funding to the Nanyang Environment & Water Research Institute (NEWRI) of the Nanyang Technological University (NTU, Singapore). 2024-10-10T05:20:48Z 2024-10-10T05:20:48Z 2024 Journal Article Yang, M., Silva, R., Zhao, K., Ding, R., Foo, C. J. L., Ge, L. & Lisak, G. (2024). Corrective protocol to predict interference free sensor response for paper-based solution sampling coupled with heavy metal sensitive ion-selective electrodes. Analyst, 149(17), 4351-4362. https://dx.doi.org/10.1039/d4an00841c 0003-2654 https://hdl.handle.net/10356/180536 10.1039/d4an00841c 39005217 2-s2.0-85198613927 17 149 4351 4362 en Analyst © 2024 The Author(s). This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. application/pdf |
| spellingShingle | Engineering Heavy metal ion Chemical detection Yang, Mingpeng Silva, Rochelle Zhao, Ke Ding, Ruiyu Foo, Cyrus Jit Loong Ge, Liya Lisak, Grzegorz Corrective protocol to predict interference free sensor response for paper-based solution sampling coupled with heavy metal sensitive ion-selective electrodes |
| title | Corrective protocol to predict interference free sensor response for paper-based solution sampling coupled with heavy metal sensitive ion-selective electrodes |
| title_full | Corrective protocol to predict interference free sensor response for paper-based solution sampling coupled with heavy metal sensitive ion-selective electrodes |
| title_fullStr | Corrective protocol to predict interference free sensor response for paper-based solution sampling coupled with heavy metal sensitive ion-selective electrodes |
| title_full_unstemmed | Corrective protocol to predict interference free sensor response for paper-based solution sampling coupled with heavy metal sensitive ion-selective electrodes |
| title_short | Corrective protocol to predict interference free sensor response for paper-based solution sampling coupled with heavy metal sensitive ion-selective electrodes |
| title_sort | corrective protocol to predict interference free sensor response for paper based solution sampling coupled with heavy metal sensitive ion selective electrodes |
| topic | Engineering Heavy metal ion Chemical detection |
| url | https://hdl.handle.net/10356/180536 |
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