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Department of Chemistry, Faculty of Mathematics and Natural Sciences, Tanjungpura University Jl. Prof. Dr. Hadari Nawawi, Pontianak, Kalimantan Barat, Indonesia
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INDONESIA
Indonesian Journal of Pure and Applied Chemistry
Published by Universitas Tanjungpura
ISSN : 26208571     EISSN : 2620858X     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology Chemistry
Indonesian Journal of Pure and Applied Chemistry (IJoPAC) was first established in 2018 as a scientific journal that accommodates researchers and education practitioners to publish scientific work and research results which are the results of experiments or literature studies in the field of chemistry. Publications are carried out periodically with three issues (January-April, May-August, September-December) in one volume per year. Published scientific work can be in the form of original articles, short communications and review results covering the fields of Physical chemistry, Organic chemistry, Analytical chemistry, Inorganic chemistry, Biochemistry / Biological Chemistry, Applied Chemistry. Focus and Scope of Indonesian Journal of Pure and Applied Chemistry covering the fields : Physical chemistry Organic chemistry Analytical chemistry Inorganic chemistry Biochemistry/Biological Chemistry Applied Chemistry
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 4 Documents
 1 
Search results for , issue "Vol 1, No 3 (2018)" : 4 Documents clear
PENENTUAN STRUKTUR SENYAWA ANTIOKSIDAN LIMONOID DARI BIJI JERUK SAMBAL (Citrus microcarpa Bunge) KALIMANTAN BARAT Setyo Widayanti; Rudiyansyah Rudiyansyah; Andi Hairil Alimuddin
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 3 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (572.041 KB) | DOI: 10.26418/indonesian.v1i3.34193

Abstract

Limonoid has been isolated from orange seeds of Citrus microcarpa Bunge using extraction and partitioning methods. It is a yellowish-white crystal with a melting point of 276-277 oC. Based on the phytochemical analysis and FTIR spectroscopy, 1H NMR and compared with the literature, the compound is limonin which is a triterpenoid. The purpose of this study was to determine the structure and evaluate antioxidant activity of the limonin. The antioxidant activity by DPPH obtained IC50 value of limonin was 199.18 ppm. Whereas, the test antioxidant activity by FRAP method using a comparative solution of ascorbic acid showed that there was an increasingly blue color change, which meant that antioxidant activity was stronger with activity value of 11.88 mgAAE /g sample.
SINTESIS DAN STUDI STABILITAS NANOPARTIKEL PERAK TERTUDUNG ASAM SALISILAT Rizky Noviani Ridwan; Gusrizal Gusrizal; Nurlina Nurlina; Sri Juari Santosa
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 3 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (571.891 KB) | DOI: 10.26418/indonesian.v1i3.34195

Abstract

Silver nanoparticles capped with salicylic acid have been synthesized by reduction of silver nitrate with salicylic acid without additional capping agent. In the formation of silver nanoparticles, the solution of silver nitrate was first mixed with the pH 11 salicylic acid solutions at a mole ratio of 1:40. The mixture was heated for 45 minutes in a boiling water bath. The formation of silver nanoparticles was indicated by the appearance of yellow color and monitored using UV-Vis spectrophotometer. The maximum peak of resulted silver nanoparticles appeared in the range of 410-420 nm with the average size of particles was 66±28 nm. Stability test over a period of 16 weeks showed that silver nanoparticles capped with salicylic acid were stable. The results of stability test show that salicylic acid simultaneously act as reducing as well as capping agent in the formation of silver nanoparticles.
ADSORPTION OF Pb(II) BY POLYANILINE/SILICA GEL COMPOSITE: KINETICS AND ISOTHERM STUDIES Mas Inda Putrinesia; Nurlina Nurlina; Winda Rahmalia
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 3 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (547.632 KB) | DOI: 10.26418/indonesian.v1i3.34196

Abstract

Research on the study of kinetics and isotherm adsorption of Pb(II) by polyaniline/silica gel (PANI/SiO2) composite from glass waste has successfully been done. The polymerization of silica gel was prepared by sol-gel process. Meanwhile, PANI/SiO2 composite was prepared using sulfuric acid (H2SO4) as its dopants and hydrogen peroxide (H2O2) for oxidation process. Composition of oxide compound in PANI/SiO2 composite was analyzed by X-Ray Fluorosence (XRF) and Gas Sorption Analyzer (GSA). Adsorption of Pb(II) was carried out by contacting PANI/SiO2 with Pb(NO3)2 solution for 20, 40, 60 and 80 minutes, with concentrations of 150, 200, 250, 300, 350 and 400 mg/L. The optimum contact time was reached at 40 minutes. This adsorption followed pseudo-second order model with R2= 0.996. The first optimum adsorption capacity was reached in the concentration of 250 mg/L. Isotherm adsorption followed Langmuir models with R2= 0.954 (monolayer capacity= 51.02 mg/g).
BIOADSORPSI Fe(II) OLEH KULIT BUAH JERUK Citrus nobilis Lour. var microcarpa TERMODIFIKASI Ca(OH)2 Norvi Fatmawati; Thamrin Usman; Titin Anita Zahara
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 3 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (725.029 KB) | DOI: 10.26418/indonesian.v1i3.34205

Abstract

Pontianak peel fruit waste contains pectin, cellulose, and hemicellulose which can be used as heavy metal adsorbents by modifying using Ca(OH)2. The purpose of this study was to determine the physicochemical characteristics of calcium-modified Pontianak Citrus adsorbents (JeP-Oca), determine the maximum capacity of Fe(II) adsorption by JeP-OCa, and JeP-OCa adsorption kinetics. The characteristics of the adsorbent were analyzed using the Fourier Transformation Infra Red (FTIR) showing the functional groups of –OH and -COOH, Electron Scanning (SEM) Microscopy showing the surface structure of the canal and many irregular niches. The adsorption isotherm method with the BET model showed a large difference in porous surface area, namely 104.872 m2/g for JeP, 242.649 m2/g for JeP-ONa and 3759.745 m2/g for JeP-OCa. Optimization of the influence of pH, adsorbent mass, adsorbate concentration, and time using the column method. Adsorption isotherm followed the Freundlich isotherm model with maximum adsorption capacity value of 22.7272 mg/g. Fulfill the pseudo-order 2 reaction kinetics with a rate constant value of 4.097 L/mg. Min. The adsorption application using groundwater resulted in absorption efficiency of 82.99%.

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