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All Journal SEMIRATA 2015 Jurnal Zarah Indonesia Chimica Acta Al-Kimia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Jurnal Anugerah: Jurnal Pengabdian Kepada Masyarakat Bidang Keguruan dan Ilmu Pendidikan SPIN: Jurnal Kimia & Pendidikan Kimia Majalah Ilmiah Gema Maritim KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Jurnal Energi Baru dan Terbarukan IJCR (Indonesian Journal of Chemical Research) COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Journal Of Research and Education Chemistry (JREC) Journal of The Indonesian Society of Integrated Chemistry MERDEKA: Jurnal Ilmiah Multidisiplin
Hilfi Pardi
Universitas Maritim Raja Ali Haji
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Social Sciences Other

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Journal : Al-Kimia

 1 
Optimalisasi Penentuan Logam Cu(II) Mengunakan Metoda Voltammetri Stripping Adsorptif (VSAd) Hilfi Pardi; Nancy Willian
Al-Kimia Vol 9 No 1 (2021): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v9i1.18273

Abstract

Copper is an essential heavy metal, but if in concentrations that pass the threshold and accumulate in the body, it will be toxic which can cause various diseases. One of the methods for determining Cu(II) metal is the Adsorptive stripping voltammetry (VSAd). This research is to determine the metal using voltammetry stripping Adsorptive (VSAd) in samples of river water and sea water. To obtain maximum results in this method, it is necessary to have optimum conditions for various ligands (chalcone, 2,2' Bipyridine, 8-Hydroxyquinoline, Ammonium pyrrolidinedithiocarbamate) for potential accumulation , accumulation time, pH and optimum ligand concentration, as well as determining the accuracy and precision of the method used by determining the relative standard deviation (SDR) value, as well as the recovery value. The results obtained were chalcone as the optimum ligand, the optimum accumulation potential was -0.1 V, the optimum accumulation time was 60 seconds, the optimum solution pH was 6, and the optimum chalcone concentration was 0.5 mM. The relative standard deviation value is 4.27%, the recovery value is 98.31%. The application of the VSAd method to water samples resulted in the concentration of Cu(II) metal in the Batang Air Sidingin Padang river sample, which was 4.778 g/L and the estuary of Padang which was 5.189 g/L.
Penentuan Logam Cr(VI) Menggunakan Metoda Voltammetri Stripping Anoda (VSA) pada Sampel Air Laut dan Air Sungai Hilfi Pardi; Nancy Willian
Al-Kimia Vol 10 No 1 (2022): JUNI
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v10i1.21799

Abstract

The research aims to determine Cr(VI) in the sea and river water samples using the Stripping Anode Voltammetry (VSA) method has been carried out by finding the optimum conditions for deposition potential, deposition time, pH, and electrolyte concentration measurements. As well as looking at the accuracy and accuracy of the method, it is necessary to determine the value of the relative standard deviation (SRD) and the value of recovery. The results obtained were -1.3 V deposition potential, 60 seconds deposition time, 0.2 M NH4Cl supporting electrolyte solution concentration, pH 10, SDR value was 2.36%, and the percent recovery value was 99.91%. As an application of this method, the determination of Cr(VI) was carried out in seawater samples from Senggarang and water from the Carang Tanjungpinang river. The concentration of Cr(VI) in Senggarang seawater samples was 133.751 g/L and in Carang River water samples 34,702 g/L.
Optimisation of The Cathodic Stripping Voltammetry For The Determination of Metal Ni(II) in The River Water pardi, Hilfi; Fitriyah, Dina
Al-Kimia Vol 11 No 1 (2023): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v11i1.35688

Abstract

The study was carried out to determination the metal Ni(II) in river water samples using cathodic stripping voltammetry (CSV) method. In order to achieve optimum conditions for the determination of metal Ni(II), the accumulation potential and accumulation time conditions of the CSV method have been achieved. The results of this research obtained under the optimum conditions for Ni(II) measurement using an electrolyte solution of ammonium chloride with a potential accumulation (accv) of -0.7 V and a time accumulation (acct) of 60 s. The relative standard deviation of the 10 µg/L Ni(II) standard solution (n=8) is 0.53%, the recovery value is 98.82%. The CSV method for the determination of Ni(II) metal has been successfully applied to river water samples.
Co-Authors Abdul Malik Aprilla, Rabena Bella , Meicyntia Deswati Deswati Dian Anggraini DINA FITRIYAH Dina Fitriyah Dina Fitriyah Eka Putra Ramdhani Eka Ramdhani Fitriah Khoirunnisa Fitriani, Rita Friska Septiani Silitonga Friska Silitonga Gery Pratama Hamzar Suyani Hutajulu, Ezra Solafide Hutajulu, Solafide Isnaini Leo Shanty Jintan, Putri Ranik Kurnia Andika Laia, Superlesman Meilinda, Reza Monika Putri Pardede Nancy Willian Natasha, Febiana Nelvi Helmania Putri Nina Adriani Ningsih, Putri Amelia Noviana Ika Puspitasari Pratama, Gery Putri Pardede, Monika Rabena Aprilla Ramadani, Putri Ramadhani, Muhammad Rizki Riri Trinanda Rita Fitriani Safni Safni Siska Dwi Febryani Superlesman Laia Umiati Loekman