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All Journal CHEMISTRY PROGRESS Jurnal Sains Dasar Jurnal Ilmu Kimia Universitas Brawijaya UNEJ e-Proceeding Makara Journal of Science
Qonitah Fardiyah
Department Of Chemistry, Faculty Of Mathematic And Natural Science, Brawijaya University, Malang
Chemical Engineering, Chemistry & Bioengineering Chemistry Education

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Journal : Makara Journal of Science

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A Simple and Safe Spectrophotometric Method for Iodide Determination Sulistyarti, Hermin; Atikah,; Fardiyah, Qonitah; Febriyanti, Sita; Asdauna,
Makara Journal of Science Vol. 19, No. 2
Publisher : UI Scholars Hub

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Abstract

In order to practice green chemistry, a simple and safe spectrophotometric method for iodide determination has been successfully developed based on the formation of a blue starch-iodine complex. Iodide was oxidized to form iodine prior to the addition of a starch solution, and the blue starch-iodine complex was directly detected spectrophoto-metrically at a wavelength of 615 nm. The chemical parameters, such as type, reaction time, as well as concentration of oxidizing agents and solution pH were optimized with respect to sensitivity and analysis time. The method showed optimum results under iodate oxidant with a mol ratio of IO3-:I- =1:3, reaction time of 5 minutes, and solution pH of 5. Under these optimum conditions, the method showed linierity measurements from 5-40 mg/L iodide with a correlation (R2) of 0.9889. This technique offers a simple, safe, accurate, and relatively fast method for iodide determination, which is prospective for monitoring iodide samples.
Co-Authors Ani Mulyasuryani Arini Sugiarti Arumdati, Rara Aulia Asdauna Asdauna Asdauna, Asih Hajaranti Atikah . Atikah Atikah Atikah Atikah Atikah, Atikah, Atikah Atikah, atikah Barlah Rumhayati Barlah Rumhayati Daninda, Mahani Djatmika, Rosalina Fahrana Salas Trenggamayu Nelgi Faiza, Nur Febriyanti, Sita Gunawan, David Hermin Sulistyarti Hermin Sulistyarti Hermin Sulistyati Ika Rosemiyani Ika Rosemiyani Ilham Krisdarmawan Putra Kusumaningtyas, Nadia Mira Linda Noviana Maulidah, Fajar Rizqy Maulidyawati, Titin Puspitaningrum, Shanti Putra, Bhurman Pratama Rahmawati, Alif Faiza Rivaatun Dwi N Dwi N. Roisatul Hasanah Sabarudin, Akhmad Setyorini, Dian Ayu Silzha Eka Prasetya Irawan Sita Febriyanti Syafira Ayu Deviana Thahir, Firda Syawalina Wijanarko, Aris