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All Journal VALENSI JURNAL KIMIA SAINS DAN APLIKASI Biotika: Jurnal Ilmiah Biologi Omni-Akuatika ALCHEMY Jurnal Penelitian Kimia Akta Kimia Indonesia Jurnal Kartika Kimia Jurnal Abdimas Kartika Wijayakusuma CHEDS: Journal of Chemistry, Education, and Science Jurnal Pengabdian Masyarakat al Kimiya : Jurnal Ilmu Kimia dan Terapan
Muhammad Yudhistira Azis, Muhammad Yudhistira
Institut Teknologi Bandung
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Public Health Social Sciences Other

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Peningkatan Literasi Sains Melalui Pengabdian Masyarakat Berbasis Eksperimen Kimia Sederana di SMAN 30 Garut Thoriq Thoriq; Rizky Sri Rahayu; Zidhan Firdaus Ramdhani; Ayudya Restu Yudha Pramesthi; Muhammad Yudhistira Azis
Jurnal Pengabdian Masyarakat Vol. 3 No. 1 (2024): April : Jurnal Pengabdian Masyarakat
Publisher : Universitas 45 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30640/abdimas45.v3i1.2426

Abstract

Scientific literacy is one of the most important aspects in improving the quality of education and human resource development. The level of scientific literacy understanding among students in Indonesia remains comparatively inadequate. Therefore, a chemistry-based community service was conducted at SMAN 30 Garut which aims to improve students' scientific literacy and learning enthusiasm through demonstrations of simple chemical experiments and fun education. This Community Service at SMAN 30 Garut involved members of the HMK “AMISCA” ITB Chemistry Student Association as facilitators in carrying out simple chemical experiments. Several chemical experiments were presented, including the decomposition reaction of hydrogen peroxide, hydrogen balloons, vitamin C testing, secret messages using the Phenolphthalein indicator, and acid-base indicators from colored flower extracts. This activity can improve students' knowledge and interest in science. This is evidenced by the students' enthusiasm in participating in the activities, as well as the results of the feedback distributed after the activities. With the implementation of this chemistry-based community service, it is expected to be a solution in improving scientific literacy and motivating students to further explore the field of science
Sosialisasi Identifikasi Air Tercemar dan Pelatihan Pembuatan Handsanitizer pada Warga Karang Taruna Harapan Jaya Desa Kersamaju RT01 RW02 Kabupaten Tasikmalaya dalam Meningkatkan Edukasi Kepedulian Lingkungan dan Protokol Kesehatan Azis, Muhammad Yudhistira; Hardian, Arie; Sagita, Fuja; Setyorini, Dian Ayu; Setiyanto, Henry
Jurnal Abdimas Kartika Wijayakusuma Vol 2 No 2 (2021): Jurnal Abdimas Kartika Wijayakusuma
Publisher : LPPM Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (513.702 KB) | DOI: 10.26874/jakw.v2i2.169

Abstract

Kersamaju, Cigalontang, Tasikmalaya merupakan salah satu desa yang warganya masih memanfaatkan air sungai sebagai sumber air, sekaligus sebagai tempat pembuangan sampah. Edukasi terkait air tercemar diberikan kepada warga Karang Taruna yang merupakan pionir kemajuan desa yang terdiri dari para warga yang kreatif dan produktif. Selain itu, kegiatan yang dilakukan di masa pandemi menuntut penerapan protokol kesehatan, namun kesadaran warga desa masih kurang dalam menerapkan protokol kesehatan karena belum adanya sarana dan prasarana edukasi warga dalam penerapan protokol kesehatan, seperti mencuci tangan menggunakan sabun atau handsanitizer. Tujuan kegiatan ini adalah memberikan edukasi terkait dampak dan identifikasi air tercemar, serta penerapan protokol kesehatan kepada 20 orang warga Karang Taruna. Metode yang dipilih yaitu forum diskusi dan praktek yaitu praktek identifikasi air tercemar sederhana menggunakan pH universal, pengamatan visual, dan penyaringan air sederhana, serta sosialisasi penerapan protokol kesehatan dengan pembuatan handsanitizer. Kegiatan ini menambah wawasan dan bermanfaat bagi warga Karang Taruna dalam meningkatkan kepedulian lingkungan dan menerapkan protokol kesehatan.
Synthesis and Characterization of Magnetic Molecularly Imprinted Polymers Targeting Capsaicin Amri, Ahmad Mukhlasul; Azis, Muhammad Yudhistira; Zulfikar, Muhammad Ali
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.40808

Abstract

A novel magnetic molecularly imprinted polymers (MMIPs) was developed for the adsorption of capsaicin, a key component of capsaicinoids widely used in food additives and topical pharmaceuticals. Excessive use of capsaicin can lead to respiratory, skin, and oral disorders, necessitating effective monitoring methods. This study aimed to synthesize MMIPs and magnetic molecularly non imprinted polymers (MNIPs) using 4-vinyl pyridine as the functional monomer and ethylene glycol dimethacrylate (EGDMA) as the crosslinker, combined with an initiator in a 1:4:20 molar ratio. Magnetite nanoparticles (Fe3O4) were incorporated to facilitate magnetic separation. Characterization via particle size analyzer (PSA), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) confirmed the successful synthesis of Fe3O4 nanoparticles, MNIPs, and MMIPs. PSA analysis for Fe3O4 nanoparticles showed an average size of 140.2 nm with a polydispersity index (PI) of 0.313, MMIPs showed an average particle size of 746.6 nm and a PI value of 0.397. FTIR spectra revealed characteristic absorption bands at 3429 cm−1 (O-H), 2958 cm−1 (C-H), 1732 cm−1 (C=O), 1155 cm−1 (C-O), and 580 cm−1(Fe-O), indicating successful Fe3O4 modification. SEM-EDS analysis showed non-spherical morphology due to bulk polymerization. TEM image results showed Fe₃O₄ nanoparticles were successfully coated with a molecularly imprinted polymer (MIP). The developed MMIPs effectively have a robust synthesis method and thorough analysis, laying the groundwork for future applications.
Chemometric Analysis for Heavy Metal Pollution Assessment of Beach Sediments in Balongan, Indramayu Andi Budi Bakti; Muhammad Yudhistira Azis
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 12, No. 1, May 2026
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v12i1.46477

Abstract

Balongan is a coastal area whose waters are vulnerable to contamination heavy metals due to anthropogenic activities, particularly oil refinery operations. This study aimed to (1) characterize the physicochemical properties and quantify heavy metal concentrations in sediments from Balongan; (2) identify the contamination level, sources, spatial distribution, and ecological risk; and (3) analyze inter-parameter relationships, site similarities, and dominant factors controlling contamination pattern variability using a chemometric approach. Sampling was conducted in May 2025, and heavy metal analysis was performed using F-AAS. The results showed that the concentrations of Pb, Cu, Zn, and Cr remained within safe limits, whereas Cd and Ni exceeded the threshold values. Cd was predominantly attributed to anthropogenic sources (CF>6), whereas Ni was mainly attributed to natural processes (CF<1). Although still below threshold values, Pb, Cu, Zn, and Ni concentrations were higher at sites closer to the oil refinery, suggesting influences from oil-related activities. Elevated Cd and Ni concentrations were the primary contributors to sediment toxicity, with PERI values ranging from moderate to severe. The clay fraction and organic matter showed positive correlations with heavy metals. Thus, the dominant factors controlling the variability of contamination patterns are the similarity of pollution sources and sediment physicochemical properties.
Evaluation of Nickel, Copper, and Cadmium Contamination in Sediments from The Waters of Mare Island, North Maluku Andi Budi Bakti; Muhammad Yudhistira Azis; Halikuddin Umasangaji; Diyah Fatimah Oktaviani; Prasetyo Abi Widyananto
Journal Omni-Akuatika Vol 21, No 2 (2025): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2025.21.2.1263

Abstract

Mare Island has been appointed as a conservation area and tourist park due to its seagrass, coral reef, and mangrove ecosystems. However, intensive nickel mining activities in Maluku have the potential to contaminate the marine environment. Heavy metals resulting from these activities are toxic and harmful to both human and marine biota health. Monitoring of the marine environment is important through sediment quality assessment. Therefore, this study aims to evaluate contamination of Ni, Cu and Cd in sediments from the waters of Mare Island, using verified testing methods. The sediment samples were wet-digested using aqua regia on a hotplate and analyzed using flame atomic absorption spectrophotometer (FAAS). The testing method was verified according to AOAC guidelines, covering linearity, LOD, LOQ, recovery, and repeatability. The results show that the concentrations of Ni, Cu, and Cd in the waters of Mare Island ranged from 23.30–29.30; <0.51–5.21 and 6.20–7.94 mg/kg dw, respectively. The Cu concentration is still within safe limits, while Ni and Cd concentrations are categorized as hazardous, posing a risk to marine biota. Based on Contamination Factor, Enrichment Factor, Pollution Load Index, and Potential Ecological Risk Index values, the waters of Mare Island are classified as polluted, originating from anthropogenic activities.
Co-Authors Agung Dhamar Syakti Amri, Ahmad Mukhlasul Andi Budi Bakti Andi Budi Bakti Annisa Anggitami Annisa Anggitami Arie Hardian Ayudya Restu Yudha Pramesthi Ayuliansari, Yossy Dian Ayu Setyorini Dian Ayu Setyorini Diyah Fatimah Oktaviani Fathia Rizoi Aprilia Fathia Rizqi Aprilia Halikuddin Umasangaji Halimah Fahri Kadja, Grandprix Thomryes Marth Kevin kevin Ma’ruf, Nardyawan Arifi Mochammad Resya Putra Mochammad Resya Putra Muhammad Ali Zulfikar Muhammad Ali Zulfikar Oentari Agustin Dwi Hartini Pinandita, Aria Prasetyo Abi Widyananto Putra, Mochamad Resya Putri, Rizkya Dwiananda Rahayu, Rizky Sri Ria Sri Rahayu Rizky Sri Rahayu Rofilah, Salsazahra Rusnadi Rusnadi Sagita, Fuja Setiyanto, Henry Solikah, Al Milatus Suryo Gandasasmita Susetyo, Eprafoditus Kristiadi Thoriq Thoriq Thoriq, Thoriq Tika Rahayu Putri Tikarahayu Putri Winda Br Purba Wisye Dewi Camelina Yossy Ayuliasari Zidhan Firdaus Ramdhani