Fabrication of SO42--ISE based on Copolymer of Methyl methacrylate-butyl acrylate (MB28) Thin-film and Graphite Pencil Electrode (GPE)
The SO42- -ISE sensor fabrication process based on MB28 and GPE membranes has been successfully implemented. In this study, the MB28 membrane was prepared using the photo-polymer technique on the surface of a polypyrrole with KCl as a dopant layer previously coated on the GPE surface. In this study,...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2025-01-01
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| Series: | BIO Web of Conferences |
| Online Access: | https://www.bio-conferences.org/articles/bioconf/pdf/2025/10/bioconf_safe24_03005.pdf |
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| Summary: | The SO42- -ISE sensor fabrication process based on MB28 and GPE membranes has been successfully implemented. In this study, the MB28 membrane was prepared using the photo-polymer technique on the surface of a polypyrrole with KCl as a dopant layer previously coated on the GPE surface. In this study, the optimum composition of the MB28 membrane consisted of 1 mg of lipophilic salt TDDACl and a 1:2 mole ratio sulfate ionophore, where the resulting slope approached the Nernstian number with a linear range between 0.1 -10-6 M. Meanwhile, selectivity tests were carried out using the FIM, where SO42--ISE provides good selectivity to I-, Cl- and NO3- ions. This fabricated sensor can work for 12 days at pH 3-9 and provides performance comparable to the gravimetric method according to SNI 19-6964.5-2003. |
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| ISSN: | 2117-4458 |