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INDONESIA
Indonesian Journal of Chemical Analysis (IJCA)
Published by Universitas Islam Indonesia
ISSN : 26227401     EISSN : 26227126     DOI : -
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science
IJCA (Indonesian Journal of Chemical Analysis) is a chemistry journal published by Chemical Analysis Department, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia. IJCA publishes original research articles or review articles on aspect all of the chemistry fields especially in analytical methods, procedures, and principles. IJCA has the vision to become a reputable journal and can publish good quality papers. We aim to provide lecturer, researchers both academic and industries, and students worldwide with unlimited access to publishing in our journal.
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Articles 5 Documents
 1 
Search results for , issue "Vol. 3 No. 1 (2020): Indonesian Journal of Chemical Analysis" : 5 Documents clear
Characterization of Cr/SiO2/Al2O3 catalyst from Rice Husk using Impregnation Method Prahadu Susmanto; Yandriani Gusman; M Fajar Ridwan; Endra Hakim Tanara
Indonesian Journal of Chemical Analysis (IJCA) Vol. 3 No. 1 (2020): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol3.iss1.art5

Abstract

Rice husk is one of biomass which has very high silica content (18-22%). It can be used as one of support material in the form of SiO2 / Al2O3 which if it is varied with metals, it will produce a catalyst. In this research, a Cr / SiO2 / Al2O3 catalyst was made by using wetness impregnation and dry impregnation methods to obtain the best amount of Cr metal. According to FTIR test results on SiO2 / Al2O3 material, it formed Si-OH bond (3250.2 cm-1), Al-OH (1620 cm-1), Si-O-Si (1410.6 cm-1), O-Al -O (767.8 cm-1). The results of SEM-EDX and Brunauer Emmet Teller (BET) test on variations in the concentration of 0.5 M precursor solution; 1 M; 1.5 M showed that A3 variant had the highest Cr content of 19.79% with a surface area of 68.939 m2 / gr, a pore volume of 0.06675 cc / gr and a pore radius of 19.36 Å. Based on isothermal desorption adsorption curve with nitrogen gas the A3 catalyst variant was classified into type IV with mesoporous structure based on  International Union of Pure and Applied Chemistry (IUPAC).
Estimation of acoustic impedance, its excess value and molar sound velocity of the binary mixture of 2-Butanol and m-Xylene for different compositions at different temperatures Md. Sydur Rahman; Muhammad Habibullah
Indonesian Journal of Chemical Analysis (IJCA) Vol. 3 No. 1 (2020): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol3.iss1.art1

Abstract

Measurements of physico-acoustic properties at ultrasonic level have been studied intensively for the binary mixture of 2-Butanol + m-Xylene system as a function of the composition at 298.15K to 323.15K by 5K intervals and at atmospheric pressure. Acoustic impedance(Z), excess acoustic impedance (ZE) and molar sound velocity (R) have been evaluated from the experimental values of speeds of sound and densities. The variation of these properties with composition and temperature suggests the presence of diopole-induced dipole interactions, hydrogen bond, induced electrostatic and dispersion forces. The observed negative values of ZE over the entire composition range of the system reinforce significant interactions between unlike molecules those dominate over other types. The variation of molar sound velocity (R) of the entire mixture suggests the rarefaction of the liquid mixture under study.
Neutralization Acid Mine Drainage (AMD) using NaOH at PT. Jorong Barutama Grestone, Tanah Laut, South Borneo Umi Baroroh Lili Utami; Heru Susanto; Bambang Cahyono
Indonesian Journal of Chemical Analysis (IJCA) Vol. 3 No. 1 (2020): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol3.iss1.art3

Abstract

Acid mine drainage (AMD)  is mine water with a low pH derived from the oxidation of pyrite containing sulfide with water and air to produce sulfide acid (H2SO4) containing free sulfate. Acid mine drainage treatment carried out at PT Jorong Barutama Greystone Tanah Laut uses limestone at a cost of Rp.220. - per cubic meter of water. This study was conducted to determine the use of technical NaOH for changes in mine acid quality (pH. Fe and Mn). The method carried out by active handling is by adding technical NaOH into mine acid water. The results showed that neutralization of acid mine drainage using technical NaOH 10% to pH 8. was able to reduce Fe by 18.60 - 25.42% and Mn by 31.95 - 39.27%. at a cost of Rp.327. - per meter cubic of water
Synthesis of Copper Nanoparticles Using Chromolaena odorata (L.) Leaf Extract as A Stabilizing Agent Suprapto Suprapto; Cantika Alda Hafshah Handoyo; Putri Ayu Senja; Veto Barid Ramadhan; Yatim Lailun Ni'mah
Indonesian Journal of Chemical Analysis (IJCA) Vol. 3 No. 1 (2020): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol3.iss1.art2

Abstract

Butterfly Pea (Clitoria Ternatea L.) Extract as Indicator of Acid-Base Titration Bayu Wiyantoko; Astuti astuti
Indonesian Journal of Chemical Analysis (IJCA) Vol. 3 No. 1 (2020): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol3.iss1.art4

Abstract

An anthocyanin color pigment result from butterfly pea flower maceration has been done. This study aims to determine the effect of time variation in the maceration of anthocyanin butterfly pea flower extract and the stability of butterfly pea flower extract as an indicator of acid-base titration. Color pigment levels were determined quantitatively with a UV-Visible spectrophotometer. The anthocyanin levels obtained during the duration of maceration 5 days in a row resulted from 4.3915%, 5.9869%, 7.3970%, 8.8995%, and 10.2864%. While the anthocyanin levels using a differential pH method were 14.2775 mg/L and 14.9455 mg/L with % RPD value was 4.57%. The results of the study stated that the indicators of the butterfly pea flower crown extract can be a substitute for the synthetic phenolphthalein indicator that has been used.

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