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INDONESIA
Indonesian Journal of Chemistry and Environment
Published by Universitas Negeri Yogyakarta
ISSN : -     EISSN : 25993186     DOI : 10.21831
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Materials Science & Nanotechnology
Articles are welcome that deal with theoretical analysis, meta-anaysis reviews, and result of research or empirical studies from all aspect of Chemistry and Environment. Reports on new methodologies and comprehensive assessments of existing ones, as well as applications to new types of problems are especially welcome. Experimental papers are expected to be brought into relation with theory, and theoretical papers should be connected to present or future experiments. Manuscripts that apply routine use or minor extensions or modifications of established and/or published experimental and theoretical methodologies are appropriate if they report novel results for an important problem of high interest and/or if they provide significant new insights.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol. 7 No. 2 (2024): DECEMBER 2024" : 5 Documents clear
Tin - The Occurrences, Properties, and Applications: A Literature Review Muderawan, I Wayan; Karyasa, I Wayan; Young, David James
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.77581

Abstract

Tin is a chemical element with the symbol Sn, atomic number of 50, atomic mass of 118.71 g/mol and belong to group 14 and period 5 in the periodic table of elements. Tin has two main allotropes, α-tin and β-tin, 10 stable isotopes, 29 unstable isotopes and 30 metastable isomers, the greatest number of any element. In nature, tin occurs primarily as the mineral cassiterite (SnO2) in various geological formations. It is often found in association with granite rocks and alluvial deposits. Tin is purified by smelting cassiterite with carbon followed by boiling and liquation or electrolytic methods. Tin is a silvery-white metal with a relatively low melting point of 231.93°C and a boiling point of 2,602°C. It exhibits good corrosion resistance, making it suitable for use in various environments, especially when alloyed with other metals. In addition, tin is soft, malleable, ductile metal and has excellent solderability making it useful for joining other metals together in the electronic and electrical equipment. Tin has two mains oxidation states, +2 and the slightly more stable +4, and can form inorganic and organometallic compounds.  Due to its remarkable physical and chemical properties make this metal attract attention and has very broad benefits. Tin is not only used in conventional technologies such as solders, cans and coins, but also in advanced technologies such as tin lithium-ion batteries, smart screens and solar cells. In future, tin will play a crucial role in advancing green technologies by enabling the development of renewable energy systems, energy-efficient processes, and environmentally friendly materials. Its versatility and sustainability make it an indispensable element in the transition towards a more sustainable future. Tin is also used as reagents in organic synthesis, such as allylic, allenic and propargylic stannanes, for forming C-C bond which are very necessary in drug synthesis and development. Tin as individual particles is not exceedingly lethal to living organisms. Elemental tin metal, its salts and its oxides present low toxicity. In contrast, certain organotin compounds are almost as toxic as cyanide. Since it is not biodegradable, organic tin can last longer in the environment.
Applications and Future Potential of X-ray Diffraction in Pharmaceutical Polymorphism: A Literature Review Dwiputra, Rizki Rava; Saputri, Jasmine Rahma; Utami, Marsah Rahmawati
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.79071

Abstract

Polymorphism in drug compounds is a significant phenomenon in pharmacy because it affects physicochemical properties such as solubility, stability, and bioavailability, which impact the effectiveness and safety of drugs. X-ray diffraction (XRD) is one of the methods that can be used to identify and analyze the polymorphic properties of drug compounds. This article reviews the utilization of XRD in various studies, showing that this method is effective for identifying polymorphism, detecting changes in crystal forms, monitoring crystalline phase transitions, and characterizing the formation of new crystalline phases. Although very useful, XRD has limitations in detecting amorphous phases and requires optimal sample preparation. For more comprehensive results, XRD is often combined with other techniques such as DSC and FTIR. Overall, XRD plays an important role in drug development and quality control, and this technology is expected to continue evolving, including its ability to directly monitor the crystallization process to enhance drug quality and stability.
The Preparative Nonreflux Procedure on Disproportionation Reaction in Small-Scale Synthesis Rohmawati, Dini; Handayani, Sri; Budimarwanti, Cornelia; Sari, Dista Arum; Yuliyanti, Diana; Abdillah, Muchammad Ikmal; Pratiwi, Oktavia; Anasriah, Tria Novita
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.82418

Abstract

Reactions with nonreflux procedures are based on the mechanical impact energy to promote the transformation process of chemicals. The simple procedures are grinding-milling, microwave-assisted, and ultrasonic-assisted. Generally, the procedures were undergoing nonsolvent or solventless reaction conditions also in effective and efficient processes, which corresponds to the principles of green chemistry. In its development, disproportionation reaction could also be undergone by applying these methods. This article discussed the preparative procedures of nonreflux with grinding, shaking, ultrasonic-assisted, and microwave-assisted in disproportionation reactions, which later could be used as standard procedures according to green chemistry and sustainable development goals (SDGs).
Species Composition, Utilization and Conservation Status of Plant Species in Gmelina arborea Agroforestry System in Boalemo Regency Kadir, Zen Setiawan; Baderan, Dewi Wahyuni K.; Hamidun, Marini Susanti; Utina, Ramli; Dunggio, Iswan
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.79096

Abstract

Agroforestry is a land-use system that integrates trees, crops, and livestock to improve sustainability and resilience in agricultural practices. This research aimed to determine the composition of plant species in the White Teak Agroforestry, the utilization of plants and the conservation status of plant species in the White Teak agroforestry system. Quantitative approach was applied with plant data collection carried out by tracing the research location and observing all existing plant species accompanied by taking pictures using a digital camera. The results of the study indicate that the agroforestry system has significant potential in supporting environmental sustainability and community welfare. The results revealed there were 33 plant species found in the agroforestry, 23 of them were plants that distributed across various regions in Indonesia and 14 are classified as Least Concern by the IUCN Red List.
Curcumin Electropolymerization to Graphite Modification for Pb2+ Electrochemical Sensing Marwati, Siti; Prodjosantoso, Anti Kolonial; Padmaningrum, Regina Tutik; Wiraputri, Luthfia
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.81727

Abstract

Curcumin is an organic ligand that can be electrocatalytic. Curcumin can be coated on graphite electrodes to produce electrodes modified with curcumin (GPC). Curcumin acts as a ligand and forms complex compounds with metals. The modification process was carried out by electropolymerization. The electrochemical method characterized the electroactive area, electron transfer, and interaction between the electrode and Pb2+ metal ions. Functional groups and surface morphology were characterized using FTIR and SEM. Validation of analytical methods including linear range, sensitivity, limit of detection, limit of quantitation, precision, and accuracy. The interaction of the GPC electrode with Pb2+ follows the electrochemical adsorption process. The GPC electrode can identify the presence of Pb2+ metal ions with a range of 3.01-70.03 µM and 181-919.2 µM. The results of the analytical method validation include linear ranges of 3.125-67.400 µM and 179.334-919.5 µM; sensitivity of 3.3605 µA/µM; limit of detection of 6.07 µM; limit of quantitation of 18.39 µM; precision of 0.93%; and accuracy of 99%.

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