Analysis of Hg(II) Metal by Voltammetric Method Using a Carbon Electrode Modified with EDTA from Used Tire Waste

Sukoma Sukoma; Sagir Alva; Eka Safitri; Julinawati Julinawati; Mustanir Mustanir; Syafrizal Fonna; Muhammad Ihsan; Fitri Dara; Meri Dayanti; Ahmad Kamal Arifin; Khairi Suhud

doi:10.22146/ijc.97561

Analysis of Hg(II) Metal by Voltammetric Method Using a Carbon Electrode Modified with EDTA from Used Tire Waste

https://doi.org/10.22146/ijc.97561

Sukoma Sukoma⁽¹⁾, Sagir Alva⁽²⁾, Eka Safitri⁽³⁾, Julinawati Julinawati⁽⁴⁾, Mustanir Mustanir⁽⁵⁾, Syafrizal Fonna⁽⁶⁾, Muhammad Ihsan⁽⁷⁾, Fitri Dara⁽⁸⁾, Meri Dayanti⁽⁹⁾, Ahmad Kamal Arifin⁽¹⁰⁾, Khairi Suhud^(11*)

(1) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Jl. Teuku Nyak Arief No. 441, Banda Aceh 23111, Indonesia
(2) Department of Mechanical Engineering, Faculty of Engineering, Universitas Mercu Buana, Jl. Meruya Selatan No. 1, Jakarta 11650, Indonesia
(3) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Jl. Teuku Nyak Arief No. 441, Banda Aceh 23111, Indonesia
(4) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Jl. Teuku Nyak Arief No. 441, Banda Aceh 23111, Indonesia
(5) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Jl. Teuku Nyak Arief No. 441, Banda Aceh 23111, Indonesia
(6) Department Mechanical Engineering and Industrial Engineering, Faculty of Engineering, Universitas Syiah Kuala, Jl. Teuku Nyak Arief No. 441, Banda Aceh 23111, Indonesia
(7) Faculty of Engineering, Universitas Gajah Putih, Jl. Lukup Badak No. 3, Takengon 24519, Aceh, Indonesia
(8) Research Center for Environmental and Clean Technology, National Research and Innovation Agency, Samaun Samadikun Science and Technology Area, Jl. Sangkuriang, Dago, Bandung 40135, Indonesia
(9) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Jl. Teuku Nyak Arief No. 441, Banda Aceh 23111, Indonesia
(10) Center of Integrated Design for Advanced Mechanical System (PRISMA), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
(11) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Jl. Teuku Nyak Arief No. 441, Banda Aceh 23111, Indonesia
(*) Corresponding Author

Abstract

Development of a carbon electrode sensor from used tire waste via pyrolysis, modified with ethylenediaminetetraacetic acid (EDTA) for mercury detection using the cyclic voltammetry (CV) method. EDTA plays a role in metal complexation due to its strong response to mercury metal. The FTIR results of the carbon electrode and EDTA show a C–N bond at a wavenumber of 1,217.08 cm⁻¹, indicating the presence of EDTA. The SEM results reveal a clear difference between the unmodified carbon electrode and the EDTA-modified carbon electrode. The calibration graph is linear, with an R² value of 0.9961, a sensitivity of 0.3472, as well as LoD and LoQ values of 0.03 and 0.08 ppm, respectively. The correlation coefficient is less than 2%, and the %recovery is within the allowable error range. Mercury measurements in Sungai Mas water samples, Aceh Barat, using voltammetry and AAS, exceed the threshold set by Indonesian Government Regulation (PPRI) No. 22 of 2021. The t-test results for the two Hg measurement methods at a 5% significance level (α) show that t_calculated < t_table (0.083 < 2.571). This indicates no significant difference between the voltammetry and AAS methods for measuring Hg concentrations in water.

Keywords

used tire waste; voltammetry; EDTA; mercury; cyclic voltammetry

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DOI: https://doi.org/10.22146/ijc.97561