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All Journal Teras Jurnal Walisongo Journal of Chemistry Jurnal Pendidikan Kimia Unkhair (JPKU) Molekul: Jurnal Ilmiah Kimia Jurnal Pendidikan MIPA
Khusna Arif Rakhman, Khusna Arif
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Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Education Engineering Environmental Science Materials Science & Nanotechnology Mathematics Other

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Journal : Walisongo Journal of Chemistry

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MALACHITE GREEN TRANSPORT USING POLYMER INCLUSION MEMBRANE METHOD WITH co-EDVB AS CARRIER Aprilia, Kharisma Citra; Safitri , Nurul Ulfa; Rakhman, Khusna Arif; Kiswandono , Agung Abadi
Walisongo Journal of Chemistry Vol. 8 No. 1 (2025): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v8i1.25826

Abstract

Malachite green (MG) is a synthetic dye known for its toxic and carcinogenic properties, necessitating effective removal from aquatic environments. This study investigated the use of a polymer inclusion membrane (PIM) containing co-poly(eugenol-divinylbenzene) (co-EDVB) 2% as a carrier for the selective transport of MG. The membrane was prepared by dissolving co-EDVB, polyvinyl chloride, and dibenzyl ether in tetrahydrofuran (THF). Several parameters were evaluated, including the pH of the source phase, the concentration of nitric acid in the receiving phase, membrane thickness, carrier concentration, transport time, and competitive transport in synthetic wastewater. UV-Visible spectrophotometric analysis at a wavelength of 613 nm revealed that the transport efficiency reached 90.95% under optimal conditions: source phase pH 7, 0.50 M HNO₃ in the receiving phase, membrane thickness T54, and 18 hours of transport. In the presence of competing metal ions such as Pb²⁺ and Cu²⁺, the efficiency decreased to 80.79%, confirming the important role of co-EDVB in enhancing transport selectivity and efficiency.
AN OVERVIEW OF ADVANCED 2,2-Diphenyl-1-picrylhydrazyl (DPPH) ANALYSIS TECHNIQUES Ratnawaty, Gervacia Jenny; Indrawati, Ratih; Wahdaniah, Wahdaniah; Rakhman, Khusna Arif
Walisongo Journal of Chemistry Vol. 8 No. 2 (2025): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v8i2.26028

Abstract

Antioxidants play a crucial role in preventing oxidative damage, necessitating reliable analytical techniques for their evaluation. Oxidative stress, resulting from an imbalance between free radicals and antioxidants in the body, has been associated with various chronic diseases, including cancer, cardiovascular disorders, and neurodegenerative conditions. Therefore, accurately assessing antioxidant activity is essential for developing health-related products and validating their efficacy. This study reviewed and compared various analytical methods used to determine antioxidant activity, emphasizing their advantages, limitations, and applicability across different sample types. Traditional spectrophotometric assays, such as the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method, remain widely used because of their simplicity and cost-effectiveness, although they often suffer from matrix interferences. Advanced techniques, including gas chromatography–mass spectrometry (GC–MS), high-performance liquid chromatography coupled with DPPH (HPLCDPPH), electrochemical methods, microfluidic systems, and miniaturized paper-based assays, provide improved sensitivity, accuracy, and efficiency. These methods enable a more comprehensive assessment of antioxidant activity by offering deeper insights into reaction mechanisms and compound interactions. The integration of multiple analytical approaches can further enhance antioxidant characterization, supporting applications in the food, pharmaceutical, and biomedical industries. This review highlights the importance of selecting appropriate analytical techniques based on research objectives and sample characteristics, while also outlining future directions for advancing antioxidant detection methodologies.
Co-Authors Abdjan, Muhammad Ikhlas Ajudin, Nurbani Annisa, Dira Ayu Aprilia, Kharisma Citra Barmawi, Nurtalia Cipta, Indra Dewi Satria Ahmar Gaus, Abdul Hi Abbas, Muhammad Yunus Hud, Rifki Ibrahim, Fitriana Indrawati, Ratih Indriana Kartini Jayali, Ahmad Muchin Kiswandono , Agung Abadi Kumendong, Nurbaiti Lek, Hajija Liestianty, Deasy Mauraji, Ilham SW Mufti Amir Sultan, Mufti Amir MULIADI -, MULIADI Mustafa, Linda Kurnia Nabila, Siti Ni Made Wiratini Nurfatimah Sugrah Nurul Hidayat Aprilita Nurul Inayah Rahim, Fazly Ratnawaty, Gervacia Jenny Safitri , Nurul Ulfa Sudir Umar Wahdaniah Wahyudi Zulkifli Zam Zam