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INDONESIA
JURNAL ATOMIK
Published by Universitas Mulawarman
ISSN : 25490052     EISSN : 25490052     DOI : -
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science
Jurnal Atomik (JA) is published twice a year (March and August) by Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University. Jurnal Atomik is a media for graduate students of Department of Chemistry to publish their research articles in Chemistry field including Analytical Chemistry, Inorganic Chemistry, Physical Chemistry, Organic Chemistry, and Biochemistry. The research articles that be submitted to Jurnal Atomik have to be approved by Editorial Board and in accordance with the rules of writing approved by Editor of Jurnal Atomik.
Arjuna Subject : -
Articles 204 Documents
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Pemanfaatan Cangkang Telur Ayam sebagai Sumber CaO: Studi Karakterisasi menggunakan Fourier Transform Infrared Spectroscopy (FTIR Zahra, Marinda Afifatu; Hiyahara, Irfan Ashari; Syaima, Husna
JURNAL ATOMIK Vol 10 No 2 (2025)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v10i2.1550

Abstract

This research aims to utilize chicken eggshell waste as a raw material for producing calcium oxide (CaO) through a simple calcination method. Eggshells, which are mostly composed of calcium carbonate (CaCO₃), were calcined at 900°C for one hour. The resulting material was then characterized using Fourier Transform Infrared Spectroscopy (FTIR) to identify the presence of specific functional groups. The FTIR results showed a strong absorption peak at 602.14 cm⁻¹, indicating the presence of Ca–O bonds, which confirms the formation of CaO. However, additional peaks associated with hydroxyl (–OH) and carbonate (CO₃²⁻) groups were also detected, suggesting that some residual Ca(OH)₂ and CaCO₃ remained in the sample. This indicates that the calcination process was not fully complete, and further optimization may be necessary to improve the purity of the CaO obtained.
PENENTUAN NILAI SUN PROTECTION FACTORS (SPF) PADA EKSTRAK DAUN SURIAN MENGGUNAKAN METODE SPEKTROFOTOMETRI UV-VIS Shadrina, Alyani Nur; -, Erwin; Saleh, Chairul
JURNAL ATOMIK Vol 10 No 2 (2025)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v10i2.1552

Abstract

Excessive exposure to ultraviolet (UV) radiation can cause various negative effects on the skin, including erythema, hyperpigmentation, premature aging, and even skin cancer. The use of natural-based sunscreens is considered a safer and more environmentally friendly alternative to synthetic sunscreens. This study aimed to determine the Sun Protection Factor (SPF) of the crude extract and fractions of surian leaves (Toona sinensis (Juss.) M. Roem) using a UV-Vis spectrophotometer based on Mansur's equation. Extraction was carried out by maceration with 96% ethanol, followed by liquid-liquid partition using solvents with different polarities, namely n-hexane, ethyl acetate, and ethanol-water. Phytochemical screening showed the presence of bioactive compounds such as phenolics, flavonoids, quinones, tannins, and steroids, which are known to have photoprotective potential. The SPF test results revealed that the ethyl acetate fraction had the highest SPF value of 34.34 at a concentration of 250 ppm, classified as ultra-protection. The ethanol extract and ethanol-water fraction also showed high SPF values of 31.02 and 24.51, respectively, while the n-hexane fraction had the lowest SPF value. These findings indicate that surian leaves, particularly the ethyl acetate fraction, have promising potential as an active ingredient in natural sunscreen formulations.
PENURUNAN KADAR ASAM LEMAK BEBAS PADA MINYAK JELANTAH DENGAN MENGGUNAKAN ABU KALSINASI DARI BEBERAPA BAHAN ADSORBEN Hadyanto, Rafi Firmana; Purba, Ritson; -, Daniel; Rizki, Ade Shiva
JURNAL ATOMIK Vol 10 No 2 (2025)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v10i2.1563

Abstract

Cooking oil has a primary function as a heat transfer medium in food processing. Repeated use of cooking oil can reduce its quality, which is often referred to as used cooking oil. Many people use cooking oil repeatedly to save money without considering the impact. The purpose of this study was to determine the results of refining used cooking oil in terms of free fatty acid (FFA) levels through the adsorption method using calcined ash from several different types of adsorbents, namely chicken eggshells, Tegillarca granosa shells, zeolite, and bricks. Based on the results of the study, the results of the FFA content of the used cooking oil sample were 2.735%. The results of the FFA content of the used cooking oil sample after being adsorbed using calcined ash from chicken eggshells, blood cockle shells, zeolite, and bricks were 0.638%, 0.464%, 1.691%, and 0.921%, respectively. Of the four adsorbent materials, the type of adsorbent obtained is calcined blood cockle shell ash which is the most effective in reducing the ALB levels of used cooking oil samples, which is 83.03%. Then followed by chicken egg shells, which is 76.67%, bricks, which is 66.32%, and commercial zeolite, which is 38.17%.
MINI REVIEW: POTENSI FLORA SULAWESI SELATAN UNTUK SINTESIS NANOPARTIKEL RAMAH LINGKUNGAN Kartika, Andi Eka
JURNAL ATOMIK Vol 10 No 2 (2025)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v10i2.1566

Abstract

South Sulawesi harbors a high diversity of plant species, including several endemic taxa with substantial potential for the development of environmentally sustainable nanomaterials. Among emerging approaches, the green synthesis of nanoparticles using plant extracts as bioreducing and capping agents has gained significant attention due to its simplicity, low cost, and alignment with green chemistry principles. This mini-review provides an overview of recent advancements in the biosynthesis of nanoparticles mediated by local and endemic plant species from South Sulawesi. The review highlights the role of phytochemicals in nanoparticle formation, the characterization methods employed, and their potential applications in biomedical, catalytic, and environmental fields. Furthermore, it discusses the current challenges, including standardization of plant extracts, control over nanoparticle morphology, and scalability of the process. The findings emphasize the untapped potential of South Sulawesi flora as a promising biological resource for sustainable nanoparticle synthesis and encourage further interdisciplinary research in this area.

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