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All Journal Indonesian Journal of Electronics and Instrumentation Systems
Arifin Arifin
Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Hasanuddin
Electrical & Electronics Engineering

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Fabrikasi dan Karakterisasi Sensor Elektrokimia untuk Mendeteksi Kadmium Berbasis Teknologi Film Tebal Riska Sri Wahyuni; Robert V. M.; Arifin Arifin
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 10, No 2 (2020): October
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijeis.53468

Abstract

Electrochemical sensor has been fabrication and characterization electrode to detect heavy metals of cadmium with thick film technology. Fabrication electrodes electrochemical sensors start with the design stage of electrodes, screen maker, screen printing, and substrate cutting. The fabrication process produces a ten-pieces of sensors to be used to sensors characterization of SEM, XRD, and Cyclic Voltammetry (CV). The process of characterization produces morphology and the structure of the composites N/IL/G, and linieritas 0,9623, precision ranges between 4,11 and 10,35%, sensitivity of 0,04112 µA.L-1/mg.mm2, limit detection 0,18 mg/L, and accuracy between 79,5 and 126,8%.
Fabrikasi Sensor Elektrokimia Berbasis Karbon dan Nanopartikel Perak (NPAg) Untuk Mendeteksi Acetaminophen Nurafni Julianti; Roberth Victoria Manurung; Arifin Arifin
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 10, No 1 (2020): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (897.719 KB) | DOI: 10.22146/ijeis.54115

Abstract

Acetaminophen (paracetamol) is one of the most heavily used analgesic drugs especially for pain or pain relief. The excess of acetaminophen for the human body produces a bad effects, one of them is a liver disease. In this study, silver nanoparticle (NPAg) is synthesized using Turkevich methods to increase the conductivity or the rate of transfer electron in the carbon’s surface. So, the sensitivity from electrochemical sensors to acetaminophen can be enhanced. The stability test was done by three samples from Ag/AgCl reference electrodes, each of them is 10 – 30 mV, 0,94 – 35 mV, and 20 – 67 mV. Generally, the performing of Ag/AgCl refrence elecrodes can be concluded as fairly stable with voltage less than 100 mV. From the data acetaminophen sample test, the peak of oxidation happens on 0,2 – 0,4 mV session, and the current produced increased significantly. The results of characterization using SEM morphology in NPAg have a smaller pores because of the size of the partical is also big. While the characterization using FTIR produces four kinds of functional groups including C-O, C-H, NO2, and N-H functional groups.
Screen Printed-Carbon Electrode Modifikasi Bismut untuk Analisis Kadmium dengan Voltametri Siklik Novianti Novianti; R V Manurung; Arifin Arifin
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 10, No 1 (2020): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4670.464 KB) | DOI: 10.22146/ijeis.54138

Abstract

Cadmium (Cd) is a heavy metal that has high toxicity. Cadmium levels need to be considered in an environment that can accumulate and can poison all biotic components. In this research measurements of cadmium metal using bismuth-modified carbon screen electrode  used cyclic voltammetry method. The parameters considered are the resolution of the comparative electrodes and the voltage produced from variations in cadmium concentration. The test results prove the stability of three sensors each at a voltage of 3.3 - 4.6 mV, 9.3-11.4 mV, and 27.4 - 29.8 mV. While the results of the cyclic voltammetry characterization test vary depending on the concentration of cadmium. Concentrations of 0.5-100 ng / mL produce an oxidation peak at a current of 2.03 x 10-5 - 5.00 x 10-5 A. These results show a directly proportional relationship between the cadmium concentration and the resulting current.
Co-Authors Novianti Novianti Nurafni Julianti R V Manurung Riska Sri Wahyuni Robert V. M. Roberth Victoria Manurung