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All Journal Jurnal Sains dan Seni ITS IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Teknik Kimia Bulletin of Chemical Reaction Engineering & Catalysis Program Kreativitas Mahasiswa - Teknologi Dinar: Jurnal Ekonomi dan Keuangan Islam PROSIDING SEMINAR KIMIA Indonesian Journal of Chemical Science Jurnal Kimia Terapan Indonesia Indonesian Journal of Chemistry Akta Kimia Indonesia Prosiding Seminar Nasional Sains dan Teknologi Terapan IJIEEB : International Journal of Integrated Education, Engineering and Business Proceeding of World Conference Portal: Jurnal Teknik Sipil Journal of Tropical Marine Science Indonesian Journal of Electrical Engineering and Computer Science Molluca Journal of Chemistry Education (MJoCE) Narotama Jurnal Teknik Sipil International Journal of Engineering, Science and Information Technology Halal Research Journal Jurnal Konseling Pendidikan Islam Bulletin of Chemical Reaction Engineering & Catalysis JURNAL NERACA
Fredy Kurniawan
Institut Teknologi Sepuluh Nopember
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Journal : Akta Kimia Indonesia

 1 
Fabrikasi Elektroda Pembanding Ag/AgCl dengan Berbagai Membran Fredy Kurniawan
Akta Kimia Indonesia Vol 2, No 1 (2017)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2714.818 KB) | DOI: 10.12962/j25493736.v2i1.2095

Abstract

Ag/AgCl reference electrode has been fabricated using various types of membranes, i.e. cellulose, polyisoprene, graphite, kaolinite, and LDPE. The electrodes performance were observed by measuring 0.1 M K4[Fe(CN)6] solution.  The measurements were repeated for every 2 hours during  24 hours, then every 24 hours during  6 days, and after that every 3 days for two times using cyclic voltammetry. The voltammograms obtained of various membranes were compared to Ag/AgCl commercial reference electrode voltammogram. Validation of the results was conducted by F-test and t-test. The Ag/AgCl reference electrode using polyisoprene and LDPE membranes have a performance close to commercial electrode.
Metode Analisis Besi Melalui Optimasi Kemampuan Agen Pereduksi NH2OH.HCl dan C6H8N2 Praditya Bagaskara; Djarot Sugiarso; Fredy Kurniawan
Akta Kimia Indonesia Vol 5, No 1 (2020)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.017 KB) | DOI: 10.12962/j25493736.v5i1.5841

Abstract

Pada penelitian ini dibandingkan aktivitas pereduksi NH2OH.HCl dan C6H8N2 dalam mereduksi Fe3+ menjadi Fe2+. Variasi yang dilakukan adalah pH buffer asetat optimum, waktu pembentukan kompleks optimum, dan konsentrasi pereduksi optimum dalam penentuan kadar besi (Fe) dengan menggunakan spektrofotometer UV-VIS. λmaks kompleks [Fe(C12H8N2)3]2+ dengan menggunakan pereduksi NH2OH.HCl dan C6H8N2 sebesar 510 nm. Penentuan pH buffer asetat optimum dengan pereduksi NH2OH.HCl diperoleh pH   4,5 dan pereduksi C6H8N2 diperoleh ph 3. Penentuan waktu pembentukan kompleks optimum dengan pereduksi NH2OH.HCl diperoleh pada waktu 15 menit dan pereduksi C6H8N2 diperoleh pada waktu 30 menit. Selanjutnya, dilakukan penentuan konsentrasi optimum dengan pereduksi NH2OH.HCl didapatkan pada 8 ppm dan pereduksi C6H8N2 didapatkan pada 80 ppm untuk mereduksi 5 ppm larutan Fe3+. Hasil %recovery yang diperoleh dari pereduksi NH2OH.HCl dan C6H8N2 secara berturut-turut sebesar 95,126% dan 153,090%.
Co-Authors ., Syukrianto ., Umarudin Abdullah Aman Damai Adi Prawito Adi Soeprijanto Alvin Juniawan Anang Maryanto Anggriawan, Wahyu Ari Nugroho Arif Rachmat, Arif Arynta Dharmayanti, Arynta Atik Rohmana Maftuhatul Fuad Baginda Zulkarnain Bagus, Muhammad Bahrul Ulum Dennis Farina Nury Diah Ayu Restuti Wulandari Diah Susanti Dipta Nusbangga, Dipta Djarot Sugiarso Endang Tri Wahyuni Endang Tri Wahyuni Erna Rochana Estu Yoga Elmi Gesa Febri Hadi Fitriyana Fitriyana Fransisca Bangun, Yulia Frizka Vietanti Fuji Ridha, Fuji Galuh Tiara Dewi HANGGARA, ANGGY YOGA Hariyati Purwaningsih Harmami Harmami Harus Laksana Guntur Hatta, Agus Muhamad Hendro Juwono Hendro Juwono Hendro Sutowijoyo Ika Puspita, Ika Ikhsan Setiawan Imam Abadi Isa, Illyas Md Ismail Azizi Ita Ulfin Julistyana Tistogondo Karlinda Karlinda Kartika A. Madurani Kaskoyo, Hari Koespiadi Kolo, Maria Magdalena Lia Marisca Permatasari Lourentia Candle Lutfi Andre Yahya Madurani, Kartika Anoraga Mahendra Wardhana, Mahendra Mega Vania Misbah Misbah Mochammad Zaki Nasrulloh Mohammad Teguh Hermanto Muhammad Alwi Syahara, Muhammad Alwi Muhammad Rivai NUR EFENDI Nyoman Agus Sandika Purnaman Pemal Kabogi Praditya Bagaskara Qonitah Fardiyah Rahadian Zainul Rahmi Rahmi Ramadhana Sangyang Ady Regina Tutik Padmaningrum Rika Wijiyanti, Rika Romadhona, Syahrur Rooslan Edy Santosa Sayyida Sayyida Sekartedjo Koentjoro, Sekartedjo Selvi Marcellia Setyadi Laksono Bahar Silvya Anggraini Sri Wiwoho Mudjanarko, Sri Wiwoho Suharmanto, Edi Sunarto Sunarto Suprapto Suprapto Suprapto, Suprapto Sutarno Sutarno Sutarno Sutarno Suyanta Suyanta Syahputra, Muhammad Yudha Syukrianto, Syukrianto Taslim Ersam Tri Paus Hasiholan Hutapea, Tri Paus Hasiholan Tri Widjaja Triyono Triyono Triyono Triyono Umarudin, Umarudin Vietanti, Frizka Wahyu Anggriawan Yunita Triana Yunita Triana Zulkarnain Zulkarnain