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All Journal Jurnal Ilmu Pertanian VALENSI CHEMISTRY PROGRESS Jurnal Sains Dasar Alchemy : Journal of Chemistry Jurnal Ilmu Kimia Universitas Brawijaya Indonesian Green Technology Journal Natural B The Journal of Pure and Applied Chemistry Research Program Kreativitas Mahasiswa - Penelitian Majalah Kesehatan FKUB Indonesian Journal of Chemistry Jurnal Saintek Lahan Kering Molekul: Jurnal Ilmiah Kimia jurnal Ilmu Pertanian (Agricultural Science) JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan Bubungan Tinggi: Jurnal Pengabdian Masyarakat Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Makara Journal of Science al Kimiya : Jurnal Ilmu Kimia dan Terapan
Hermin Sulistyarti
Brawijaya University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Other

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Journal : Natural B

 1 
Development of Spectrophotometric Methods for Iodide Determination Using Hydrogen Peroxide (H2O2) as Oxidizing Abner Tonu Lema; Hermin Sulistyarti; Atikah Atikah
Natural B, Journal of Health and Environmental Sciences Vol 2, No 4 (2014)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (230.801 KB) | DOI: 10.21776/ub.natural-b.2014.002.04.2

Abstract

Serious disorders of iodine deficiency can cause irreversible cretinism, pregnancy complications, goiter, compromised thyroid hormone production, mental impairment and decreasing cognitive function. In order to detect early indication of Iodine Deficiency Disorders (IDD) a development of simple spectrophotometric method for iodide  determination  is proposed using hydrogen peroxide (H2O2) as an oxidizing agent. Determination of iodide is based on the oxidation reaction of I- to I2 that form blue  complex compound I2-starch. The blue color intensity of the complex I2-starch  produced was measured at wavelength of 611 nm. Several parameters were optimized: complex formation and oxidation time of iodide, the optimum concentration of oxidizing agent, H2SO4, starch and effect of interfering ions (chloride, bromide, thiocyanate), with optimum conditions obtained of respectively: 10 minute, H2O2 0.1 M, H2SO4 0.05 M, starch 0.2 %. Under these condition, the method showed linearity of 5 - 60 ppm, limit of detection and quantification of 0.62 and 2.09 mg/L, respectively. This method has been successfully applied to synthetic and urine samples and can be recommended for the detection of iodide in patients hyperthyroidism and KI tablets.
Optimization of Pesticide Analysis Method for Diazinon and Chlorantraniliprol Using High Performance Liquid Chromatography (HPLC) Marselina Theresia Djue Tea; Akhmad Sabarudin; Hermin Sulistyarti
Natural B, Journal of Health and Environmental Sciences Vol 4, No 2 (2017)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (190.077 KB) | DOI: 10.21776/ub.natural-b.2017.004.02.1

Abstract

Methods of obtaining diazinone and chlorantraniliprol in soil samples have been developed. Analytes were extracted using acetonitrile by using an ultrasonic solvent extraction method (USE). The discovery uses high performance liquid chromatography using a UV detector. The optimum conditions for the separation of both pesticides are Acetonitrile composition: Air (60:40), flow rate 0.4 mL / min, and at 220 nm wavelength. The more the amount of acetonitrile in the eluent mixture the faster the retention time in the column. Retention time respectively, chlorantraniliprol 10,525, and diazinon 21,029.
Production of Organic Polymer Based Monolithic Columns for Anion Separation using High Performance Liquid Chromatography Dewi Annisa’; Aprilia Nur Tasfiyati; Hermin Sulistyarti; Akhmad Sabarudin
Natural B, Journal of Health and Environmental Sciences Vol 3, No 1 (2015)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (710.309 KB) | DOI: 10.21776/ub.natural-b.2015.003.01.2

Abstract

Methacrylate-based monolithic columns have been prepared in silanized silicosteel column (100 ´ 0.5 mm id) by in situ polymerization reaction, using glycidyl methacrylate (GMA) as monomer, ethylene dimethacrylate (EDMA) as crosslinker, porogen (1-propanol, 1,4 butandiol, water) and initiator AIBN.  Monolith poly-(GMA-co-EDMA) was then modified with diethylamine and benzyl chloride to obtain ammonium quartener as strong anion exchanger. From the characterization of 4 monolith in this study, monolithic columns poly-(GMA-co-EDMA) with %T 40, %C 25 and polymerization time 24 h has good mechanical stability and permeability, adequate molecular recognition sites (indicated by binding capacity value of 10,119 mg/mL), and has good proportion of flow throughpore and mesopores (45,04% and 41,32% respectively). It can successfully separate the mixture sample of anion consisting of fluoride, bromide, sulfate and nitrate ions by indirect UV detection.
Co-Authors 'Aisy, Kamila Rohadatul Abdjan, Muhammad Ikhlas Abdul Malik Bahrudin Abner Tonu Lema Adam Wiryawan Afidatul Muadifah Akhmad Sabarudin Akhmad Sabarudin Akhmad Sabarudin Akhmad Sabarudin Akhmad Sabarudin Ani Mulyasuryani Antesar Elmagirbi Aprilia Nur Tasfiyati Asdauna Zahrotun Nisa Asdauna, Asnaili Alfi Nurillah Atikah Atikah Atikah Atikah Atikah Atikah Atikah Atikah Atikah Atikah Atikah Atikah Atikah Atikah Atikah, Atikah, atikah Aulani`am Aulani`am Aulanni`am, Aulanni`am Balqis Milda, Balqis Barlah Rumhayati Bheta Sari D, Bheta Sari Chanif Mahdi Chanif Mahdi Dedeh Kurniasih Dedeh Kurniasih Dewi Annisa’ Dewi Setyowati Dewi Umaningrum Diana Candra Dewi Eka Ratri Noor Wulandari Elvian Eka Krisnaniningrum Erliana Ginting Erwin Sulistyo Erwin Sulistyo Fahmi, Ahmad Luthfi Fahrana Salas Trenggamayu Nelgi Febriyanti, Sita Gunawan, David Herman Tolle Hikmanita Lisan Nashukha Hilda Emilia Fahriyani, Hilda Emilia Ika Oktavia Wulandari Imam Riva’i Indriana, Silvi Avianti Khanifah, Nurul Krisna Rendi Awalludin Kusumaningtyas, Nadia Mira Kusumawardhani, Nury Lale B Rahayu Lilik Suryati Luluil Maknun Mariam Mohamed Omar Alshibani Mega Madha Wijaya Mike Nur Izzati Mochammad Imron Awalludin Mufidah Sari, Puspita Muhammad Iqbal Fahmi Noerma Juli Azhari Novy Lailatuz Zulfah Nury Kusumawardhani Palupi, Endah Sekar Puspitaloka, Paradhita Ayu Putra, Bhurman Pratama Putra, Boyfannie Ivan Putra, Chairil Anjasmara Robo Putri Dini Putri, Krista Firdaus Suwarno Putri, Lani Artana Qonitah Fardiyah Qonitah Fardiyah Qurrata Ayun Rizal Nur Huda RR. Ella Evrita Hestiandari Rurini Retnowati Rurini Retnowati Sasangka Prasetyawan Silvi Avianti Indriana Sita Febrianti Spas D. Kolev Stephanie Lim Sutrisno Sutrisno Syarifah, Anisa Lailatusy Tea, Marselina Theresia Djue Tuti Kurniati Tuti Kurniati Yudha Ikoma Istanti Yulia Dwi Cahyani, Yulia Dwi Zulfah, Novy Lailatuz Zuri Rismiarti ‘Aisy, Kamila Rohadatul