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All Journal VALENSI BERKALA FISIKA Jurnal Penelitian Hasil Hutan The Journal of Pure and Applied Chemistry Research Journal of Engineering and Technological Sciences Jurnal Sains Dan Teknologi Lingkungan Jurnal Sains & Teknologi Lingkungan Jurnal Kimia Riset Jurnal Hasil Penelitian Industri INDONESIAN JOURNAL OF ESSENTIAL OIL Al-Kimia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Biosaintifika: Journal of Biology & Biology Education Jurnal Purifikasi Chemistry Indonesian Journal of Chemical Research ASEAN Journal on Science and Technology for Development Jurnal Jamu Indonesia Jurnal Penelitian Hasil Hutan Milang Journal of Mathematics and Its Applications Analit: Analytical and Environmental Chemistry
Eti Rohaeti
Departemen Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Other

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Journal : Indonesian Journal of Chemistry

 1 
CARBON PASTE ELECTRODE HEXADECYLTRIMETHYLAMMONIUM BROMIDE MODIFIED NATURAL ZEOLITE FOR CHROMIUM(VI) DETECTION Budi Riza Putra; Latifah K Darusman; Eti Rohaeti
Indonesian Journal of Chemistry Vol 13, No 2 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.258 KB) | DOI: 10.22146/ijc.21294

Abstract

A simple voltammetric technique for quantification of chromium(VI) is presented in this work. The technique is based on linear sweep voltammetric reduction Cr(VI) on hexadecyltrimethylammonium bromide (HDTMABr) modified Lampung zeolite carbon paste electrode. Selected HDTMABr concentration for natural zeolite modification is obtained 200 mM. Working electrode for chromium(VI) detection is made by graphite, paraffin oil and HDTMABr modified Lampung zeolite. The effect of supporting electrolyte matrix, pH and also scan rate is also investigated. The calibration curve for chromium(VI) detection using the proposed method shows linearity from 0.2 to 1.0 mM with sensitivity, detection and quantification limit, and precision was 0.4294 mM, 3.63 x 10-4 mM, 1.197 x 10-3 mM, 4.49%, respectively.
Differentiation of Curcuma longa, Curcuma xanthorrhiza and Zingiber cassumunar by Thin Layer Chromatography Fingerprint Analysis Mohamad Rafi; Eti Rohaeti; Ali Miftahudin; Latifah K. Darusman
Indonesian Journal of Chemistry Vol 11, No 1 (2011)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (748.207 KB) | DOI: 10.22146/ijc.21423

Abstract

Turmeric (Curcuma longa), java turmeric (Curcuma xanthorrhiza) and cassumunar ginger (Zingiber cassumunar) are widely used in traditional Indonesian medicine. These three herbs have relatively similar rhizomes colour so it is difficult to be differentiated especially if they are in powder form. A rapid and reliable method, thin layer chromatography (TLC) fingerprint, has been developed in order to identify, authenticate and differentiate these three herbs through fingerprint profile of chemical compounds. TLC fingerprints of the three herbs were obtained by visualization of separate zones with visible and UV (254 and 366 nm) light. The TLC fingerprint pattern is different each other and showed a specific marker zones respectively. Therefore, TLC fingerprint can be utilized for identification, authentication and differentiation method in quality control of the three herbs tested.
Co-Authors A. KUSNANTO Achmad Fauzi Aditya Kurniawan Ali Miftahudin Anak Agung Gede Sugianthara Aryo Tedjo Asih Gayatri Budi Riza Putra Budi Riza Putra Budi Riza Putra Casnan, Casnan Citra Ajeng Palupi Deden Saprudin Derry Permana Desi Ramadhanti Djeni Hendra Erliza Noor Hadjomidjojo, Hartrisari Hartrisari Hadjomidjojo Hartrisari Hardjomidjojo Ibrahim Ibrahim Irmanida Batubara Irzaman, Irzaman J. JAHARUDDIN Latifah K Darusman Latifah K Darusman Latifah K. Darusman Latifah K. Darusman Latifah Kosim Darusman Linda Trivana Linda Trivana Linda Trivana, Linda Makmum Syafi’i Manggar Arum Aristri Moh Arif Rohman Nur Hakim Mohamad Rafi Muddathir, Ali Mahmoud N. G. Pamungkas Nur Adi Saputra Nurdiani Nurdiani, Nurdiani Nurhajawarsi Nurhajawarsi Purnawan Purnawan Rahadyanoto Trimulia Reni Febriani Rudi Heryanto Septaningsih, Dewi Anggraini Siahaan, Arnold Patogi Silvi Agusri Putri Sri Sugiarti Tamida Elinda Utami Dyah Syafitri Wulan Tri Wahyuni