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All Journal JURNAL ATOMIK
Tentriati Cahaya
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mulawarman, Samarinda, Kalimantan Timur, Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science

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FABRICATION AND CHARACTERIZATION OF A CD²⁺ ION SELECTIVE ELECTRODE OF THE COATED WIRE BASED ON POLYVINYL CHLORIDE Tentriati Cahaya; Aman Sentosa Panggabean; Moh. Syaiful Arif
JURNAL ATOMIK Vol 11 No 1 (2026)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

This study reports the fabrication and characterization of a Cd²⁺ ion-selective electrode of the coated wire (ISE) based on PVC with sodium sulfide as the ionophore. The electrode was prepared using the optimum composition of Na₂S:PVC:DOP (0.7 g:0.2 g:0.1 mL) and doped in Cd(CH₃COOH)₂ solution. The results showed a Nernstian slope of 9.5 mV/decade, detection limit of 1×10⁻⁵ M, optimum pH range of 6–7, response time of 20–60 s, and a lifetime of 3 days. FT-IR analysis demonstrated successful electrode characterization via the formation of Cd–S interactions, indicated by the band at 612.75 cm⁻¹. The electrode exhibited good selectivity toward Cd²⁺ over interfering ions (Zn²⁺, Cu²⁺, NO₃⁻, Cl⁻, SO₄²⁻).
Co-Authors Aman Sentosa Panggabean Moh. Syaiful Arif