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Program Studi Kimia, Fakultas Sains Universitas Cokroaminoto Palopo Kampus 2, Jl. Lamaranginang Kota Palopo Sulawesi Selatan
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Cokroaminoto Journal of Chemical Science
Published by Universitas Cokroaminoto Palopo
ISSN : -     EISSN : 2723438X     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Energy Materials Science & Nanotechnology
The journal publishes two continuous issues annually, which means every accepted article in February - July will be published in Issue No. 1, and every accepted articles in August - Januar will be published in Issue No. 2. scope is organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, theoretical chemistry and applied chemistry
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 4 Documents
 1 
Search results for , issue "Vol. 6 No. 1 (2024)" : 4 Documents clear
UJI KANDUNGAN UNSUR HARA Ca, Mg DAN Fe PUPUK ORGANIK CAIR (POC) DARI LIMBAH BATANG PISANG KEPOK (Musa acuminata balbisiana C.) Rachmin, Munadi; Nurdin; Nurjanna
Cokroaminoto Journal of Chemical Science Vol. 6 No. 1 (2024)
Publisher : Universitas Cokroaminoto Palopo

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Abstract

Penelitian tentang Uji Kandungan Unsur Hara Ca, Mg Dan Fe Pupuk Organik Cair Dari (POC) Limbah Batang Pisang Kepok (Musa acuminata balbisiana Colla) bertujuan untuk mengetahui apakah Pupuk Organik Cair (POC) dari limbah batang pisang kepok (Musa acuminata balbisiana Colla) mengandung unsur hara Ca, Mg dan Fe serta mengetahui kandungan unsur hara Ca, Mg dan Fe dalam Pupuk Organik Cair (POC) dari limbah batang pisang kepok. Penelitian ini diuji secara kualitatif dan kuantitatif. Hasil uji kualitatif menunjukkan Pupuk Organik Cair (POC) dari limbah batang pisang kepok (Musa acuminata balbisiana Colla) mengandung unsur hara Ca, Mg dan Fe. Analisis kuantitatif diukur menggunakan instrument Atomic Absorption Spectroscopy (AAS). Hasil uji kuantitatif Pupuk Organik Cair (POC) menunjukkan kandungan unsur hara Ca 54,3963 ppm, Mg 52,0727 ppm dan Fe 4,2715 ppm.
UJI AKTIVITAS ANTIOKSIDAN HASIL FRAKSINASI EKSTRAK METANOL DAUN ILALANG (Imperata cylindrica Linn.) DENGAN METODE DPPH Munadi, Rachmin; Jasmiadi; Ruslan, Ega Rossalinda
Cokroaminoto Journal of Chemical Science Vol. 6 No. 1 (2024)
Publisher : Universitas Cokroaminoto Palopo

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Abstract

Research on the antioxidant activity of fractionated illalang (Imperata cylindrica Linn.) leaf extract using the DPPH method has been carried out. This research aims to determine the IC50 value of the n-Hexane fraction and the 70% ethanol fraction from the methanol extract of thatch leaves using the DPPH method. The research method was carried out by maceration extraction using methanol filter fluid. The methanol extract was fractionated using n-Hexane and 70% ethanol to produce n-Hexane and 70% ethanol fractions. The antioxidant activity test of methanol extract, n-Hexane fraction and 70% ethanol was carried out using the DPPH method. The results of the antioxidant activity test of the methanol extract of Illang leaves and the 70% ethanol fraction obtained an IC50 value of 14,786 μg/mL and 11,588 μg/mL respectively, classified as a very strong antioxidant, while the n-Hexane fraction obtained an IC50 value of 100,371 μg/mL and was classified as an antioxidant. strong.
KORELASI KUALITAS AIR TERHADAP KELIMPAHAN MIKROPLASTIK DI PERAIRAN LAUT GALESONG UTARA PADA KONDISI SURUT Humaerah, St Aisyah; Rasyid, Andi Elfina Wahyuni
Cokroaminoto Journal of Chemical Science Vol. 6 No. 1 (2024)
Publisher : Universitas Cokroaminoto Palopo

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Abstract

Daerah pesisir laut kerap kali dijadikan sebagai tempat pembuangan sampah anorganik dari berbagai aktivitas manusia seperti kegiatan tempat wisata, tempat pelelangan ikan dan kegiatan industri yang sangat berpotensi sebagai zat pencemar air laut dalam bentuk mikroplastik akibat proses degradasi atau fragmentasi sampah plastik. Penelitian ini bertujuan untuk menganilisis korelasi kualitas air terhadap kelimpahan mikroplastik di pesisir laut Galesong Utara kabupaten Takalar pada kondisi surut. Penelitian ini dilakukan melalui pendekatan kuantitatif (bersifat analisis) dengan menggunakan metode observasi lapangan di lima stasiun dengan jarak titik sampling (air laut yakni 0-100 m dan 100-200 m dari bibir pantai yakni di area kawasan pemukiman padat penduduk ST1), area wisata (ST2), area industri (ST3), kawasan pemukiman kurang penduduk (ST4) dan area pasar (tempat pelelngan ikan) (5). Hasil penelitian menunjukkan adanya korelasi antara parameter kualitas air yakni suhu, ph, DO, TSS, kekeruhan dan salinitas terhadap kelimpahan mikroplastik di pesisir laut galesong utara (nilai sig. < 0,05) dengan tingkat korelasi yang sangat kuat untuk parameter suhu dan DO, tingkat korelasi yang kuat untuk parameter TSS, kekeruhan dan salinitas serta tingkat korelasi yang cukup untuk parameter ph terhadap kelimpahan mikroplastik.
PENGARUH pH TERHADAP SINTESIS NANOPARTIKEL EMAS (AuNP s) DENGAN AGEN PENUDUNG ASAM GLUTAMAT Ansyarif, Azmalaeni Rifkah; Sari, Desy Nurhasanah
Cokroaminoto Journal of Chemical Science Vol. 6 No. 1 (2024)
Publisher : Universitas Cokroaminoto Palopo

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Abstract

Glutamic acid as a reducing and capping agent was used in the synthesis of gold nanoparticles (AuNPs). The effect of pH was investigated to determine the optimum conditions and formation of AuNPs. In this study, characterization was carried out using UV-Vis spectrophotomater. Based on the test results, it shows that glutamic acid can act as a reducer and a hood in the synthesis of AuNPs marked by a change in color from colorless to burgundy. The results showed that the optimum pH value in the formation of AuNPs was characterized by the highest absorbance intensity in the UV-Vis spectra. The maximal wavelength obtained was in the region of 530 nm and the highest absorbance intensity was obtained at pH 12.

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