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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 129 Documents
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ADSORPSI SENYAWA MONOMER PIROL OLEH KARBON AKTIF MAGNETIK (ADSORPTION OF PYROL MONOMER COMPOUNDS BY MAGNETIC ACTIVE CARBON) berta juniarty antomy; M Agus Wibowo; Nelly Wahyuni
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 3 (2022)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (231.392 KB) | DOI: 10.26418/indonesian.v5i3.54948

Abstract

Magnetic activated carbon (KAM) is used as an absorbent or adsorbent based on coconut shell which has been activated with sodium bicarbonate. The activated carbon is added to the iron composite which produces KAM. The iron composite content in the adsorbent has the ability to absorb and facilitate the separation process on the adsorbate. The purpose of this study was to determine the ability of the adsorbent to absorb the adsorbate, namely the pyrrole monomer compound. The adsorbent was characterized using the Fourier Transform Infra-Red (FTIR) instrument to determine the functional groups present. The adsorption capacity of iodine and methylene blue, adsorption isotherm, and adsorption kinetics were analysis. The adsorption isotherm was determined by varying the pyrrole concentration from the range of 30; 40; 50; 60 and 70 ppm. Determination of time variation was also carried out on adsorption kinetics with a range of 1; 1.5; 2; 2.5 and 3 hours. The FTIR spectrum produces Fe-O functional groups with an absorption peak of 556 cm-1, indicating the presence of a magnetic composite that has been attached to carbon. The adsorption capacity of iodine and methylene blue on magnetic activated carbon are 527 mg/g and 699 mg/g, respectively. The adsorption kinetics on KAM with the first-order model resulted in a value of R2=0.7736
KARAKTERISASI METABOLIT SEKUNDER DARI DAUN MANGROVE Rhizopora stylosa SEBAGAI ANTIOKSIDAN (CHARACTERIZATION OF SECONDARY METABOLITE MANGROVE LEAVES Rhizopora stylosa SPECIES AS ANTIOXIDANTS) Septian Triadi Syahputra; Ajuk Sapar; Ari Widiyantoro
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 1 (2022)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.323 KB) | DOI: 10.26418/indonesian.v5i1.53566

Abstract

Mangrove leaves or also known as “bakau” by the people of Mempawah Regency, which has (Rhizopora stylose) species containing alkaloids, flavonoids, steroids, terpenoids, phenolics, and saponins that can be used as antioxidant compounds. This study was aimed to determine the antioxidant activity of extracts and secondary metabolite fractions, and also to determine the characteristics of isolate compounds from mangrove leaves (Rhizopora stylose). Maceration of 1.57 kg of dry powder of mangrove leaves (Rhizopora stylose) with methanol as a solvent obtained a crude extract of 141.13 g of methanol with a percent yield of 8.98%. Partitioning the crude methanol extract obtained the n-hexane, dichloromethane, ethylacetate, and residue fractions by weight and percent yield, respectively, namely 6.95 g (0.44%), 26.74 g (1.70%), 26 .66 (1.69%), and 25.75 g (1.64%). The results of the antioxidant activity test showed that the dichloromethane fraction had a better antioxidant activity with an IC50 value of 121.314 g/mL. Separation and purification of the dichloromethane fraction to obtain isolates were carried out by column chromatography in order to obtain pure isolates which were characterized by the appearance of a single spot on the tested plate with various eluents, namely, isolate F7. The 1H-NMR data for isolate F7 showed chemical shifts for aromatic protons of 8.52 ppm, 7.70 ppm, 7.67 ppm, protons for tertiary C of 5.41 ppm, and protons for methyl and methylene of 3.50 ppm, 3.47 ppm, 1.59 ppm, 1.23 ppm, 1.05 ppm, and 0.84 ppm. H-NMR data showed that isolate F7 had similarities with the chemical shift of p-Oxy-2-Ethylhexyl benzaldehyde, namely 7.71 ppm, 7.54 ppm, 4.22 ppm, 1.68 ppm, 1.35 ppm, 1.32 ppm, 1.30 ppm, 0.90 ppm but different in the alkoxy substituent position from isolate F7 which was in the meta position
ENERGI CELAH-PITA MATERIAL TiO2/KOMPLEKS LOGAM-KLOROFIL (M=Zn2+, Co2+) DARI DAUN SINGKONG (Manihot esculenta crant) (BANDGAP ENERGY OF MATERIAL OF TiO2/METAL-CHLOROPHYLL COMPLEX (M= Zn2+, Co2+) FROM CASSAVA LEAVES (Manihot esculenta crant)) Arif Sulaiman; Imelda Hotmarisi Silalahi; Anis Shofiyani; Ari Widiyantoro; Harlia Harlia
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 1 (2022)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (417.963 KB) | DOI: 10.26418/indonesian.v5i1.49364

Abstract

Synthesis and characterization of TiO2 films sensitized with chlorophyll and metal-chlorophyll complex (M=Zn2+, Co2+) were carried out. Chlorophyll isolated from cassava leaves shows absorption peaks on the UV-Vis spectra in the Soret band area (415 nm) and Q band area (665 nm). The metal-chlorophyll complex was prepared from the reaction of the isolated chlorophyll and ZnCl2 (for Zn2+-chlorophyll); CoCl2.6H2O (for Co2+-chlorophyll) under reflux condition at 65 ºC with a mole ratio of 1:1. The UV-Vis spectra of the isolated products showed a hypsochromic shift to 410 nm and 660 nm for Zn2+-chlorophyll whereas the spectrum of the Co2+-chlorophyll product demonstrated the shifts to 403 nm and 661 nm. These hypsochromic shifts are proposed to be a metal-to-ligand charge transfer (MLCT) transition as a result of chlorophyll metalation. The FTIR spectra of chlorophyll and metal-chlorophyll complexes have a similar pattern despite changes in the absorption of vibrational energy in several functional groups. The absorption of the C=N group shifted from 1372 cm-1 to 1368 cm-1 for both of the complexes, the C=C group of aromatic shifted from 1451 cm-1 to 1447 cm-1 (Zn2+-chlorophyll) and from 1451 cm-1 to 1445 cm-1 (Co2+-chlorophyll), and the C=O group of ketones shifted from 1627 cm-1 to 1645 cm-1 (Zn2+-chlorophyll) and from 1627 cm-1 to 1646 cm-1 (Co2+-chlorophyll). The shift pattern of the absorption peaks on the FTIR spectra indicates the coordination of metal ions towards the N atom in the pyrrole ring in the porphyrin structure of the chlorophyll. When the isolated chlorophyll as well as the chlorphyll complexes was sensitized on the surface of TiO2, variation of bandgap energy was observed. The calculation using the Tauc Plot method resulted in the bandgap energy of films of TiO2 at 3.20 eV, TiO2/chlorophyll at 2.97 eV, TiO2/Zn2+-chlorophyll at 2.87 eV, and TiO2/Co2+-chlorophyll at 2.90 eV
PERBANDINGAN METODE EKSTRAKSI TERHADAP KANDUNGAN LIMONIN PADA EKSTRAK METANOL BIJI JERUK SAMBAL (Citrus microcarpa Bunge) (COMPARISON OF EXTRACTION METHODS FOR LIMONIN CONTENT IN METHANOL EXTRACT OF SEEDS OF Citrus microcarpa Bunge) Nurhaliza Nurhaliza Nurhaliza; Rudiyansyah Rudiyansyah; Harlia Harlia
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 1 (2022)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.924 KB) | DOI: 10.26418/indonesian.v5i1.53663

Abstract

Limonin is a limonoid compound belonging to a terpenoid and it is found in Citrus plants including in the seeds of C. microcarpa. According to literature, limonin has been isolated by different methods from various Citrus plants with variable concentration. In this study, three extraction methods, maceration, soxhletation, and sonication were compared to examine a limonin concentration from the seeds of C. microcarpa. The purpose of this study is to determine the best extraction method which is able to give the highest concentration of limonin in the methanol extract. On the basis of phytochemical screening with the Liebermann-Burchard reagent and TLC data, it was found that the extracts from maceration, soxhletation, and sonication were positive for the triterpenoid. Further, based on the quantitative analysis, the average concentration of terpenoids obtained from the maceration, soxhletation, and sonication were 55.329%, 75.413%, and 83.473%, respectively. In conclusion, a sonication is the best method to extract a limonin by using terpenoid content.
SINTESIS ZEOLIT A BERBAHAN DASAR ABU TERBANG (FLY ASH) LIMBAH PT. INDONESIA CHEMICAL ALUMINA (ICA) MENGGUNAKAN METODE ALKALI HIDROTERMAL (SYNTHESIS OF ZEOLITE A BASE ON FLY ASH WASTE PT. INDONESIA CHEMICAL ALUMINA (ICA) USING HYDROTHERMAL ALKALINE METHOD) Rizky Fitri Febrianti; Titin Anita Zahara; Adhitiyawarman Adhitiyawarman
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 1 (2022)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (245.171 KB) | DOI: 10.26418/indonesian.v5i1.53072

Abstract

Fly ash is one of the combustion residues from coal-fired power plants which is produced in large quantities. The main elemental composition of fly ash is silica and alumina with content of 48.055% and 14.653%, respectively. This study aims to determine the characteristics of zeolite A synthesized from fly ash with various ratios of SiO2 and Al2O3. Zeolite A was synthesized using the alkaline hydrothermal method by varying the Si/Al molar ratio of 0.8 1 and 1.2. The initial process begins with the leaching process of fly ash waste and is followed by alkaline smelting. Furthermore, zeolite A was synthesized by adding sodium silicate and sodium aluminate to form a white gel. These steps were followed by a hydrothermal process using a hydrothermal autoclave at a temperature of 100֯C for 5 hours. Qualitative results on XRD showed that zeolite A synthesized at a ratio of Si/Al 1,2 had a 2ϴ position closer to standard zeolite A, which was seen based on the highest peaks at 2ϴ=12,420, 16,070, 20,360, 21,590, 23,960, 26,070, 27,080, 29,910, 32,500, 41,480, 44,090, 52,540, 54,230 and 66,660 and the structure formed is in cubic form with a crystallinity of 76.36%. Analysis using XRF showed that the Si/Al 1.2 ratio was the best for the formation of zeolite A. In this variation the silica and alumina content increased by 54.412% and 35.054%, respectively
AKTIVITAS ANTIOKSIDAN DAN KARAKTERISASI ISOLAT DARI FRAKSI n-HEKSANA PADA RUMPUT LAUT (Caulerpa sertularioides) ASAL SINGKAWANG KALIMANTAN BARAT (ANTIOXIDANT ACTIVITY AND ISOLATE CHARACTERIZATION OF n-HEXANE FRACTION IN SEAWEED (Caulerpa sertularioides) FROM SINGKAWANG WEST KALIMANTAN) Fitriani Fitriani; Endah Sayekti; Ajuk Sapar
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 1 (2022)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (435.639 KB) | DOI: 10.26418/indonesian.v5i1.53550

Abstract

Seaweed (Caulerpa sertularioides) is one of the marine plants of West Kalimantan, which contains bioactive compounds that can act as antioxidants. The purpose of this study was to determine antioxidant activity and identify components of organic compounds in seaweed C. sertularioides. This research was carried out in several stages, namely extraction, fractionation, antioxidant test (DPPH), vacuum liquid chromatography (KVC), gravity column chromatography (KKG), and two-dimensional thin-layer chromatography (2-Dimensional TLC), and characterization. Antioxidant activity test by DPPH method on methanol extract, n-hexane fraction, and fraction DCM from seaweed C. sertularioides obtained IC50 values of 82.21 g/mL (strong antioxidant), 131.2 g/mL (medium antioxidant), and 192.43 g/mL (weak antioxidant). The results of the FT-IR identification of isolate I4 showed a strong absorption at 3483-3387 cm-1,which was specific for the OH group. The presence of strong absorption of 2926-2854cm-1 C-H stretching group, a wide absorption of 1338 cm-1 of methyl and methylene groups (stretching). There was a strong absorption of 1543-1463 cm-1 C-O ester group (bend), a broad absorption of 1074 cm-1 C-O (stretching), and absorption of 1795-1735 cm-1 specific for the C=O ester group. The results of GC-MS on isolate I4 indicated the main component was compound 1-nonadecene (14.09%), Trifluoroacetoxy hexadecane based on the literature, the compound included the organic component of fatty acids, and esters
THE USE OF NITRIC ACID AS A PERLITE ACTIVATOR IN ADSORBING METHYLENE BLUE Mardiana Rimba Utami; Kapti Riyani; Tien Setyaningtyas
Indonesian Journal of Pure and Applied Chemistry Vol 6, No 1 (2023)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v6i1.63202

Abstract

Industrial activities in modern times that are growing rapidly can cause environmental problems. This is due to the increasing amount of waste generated due to increased production. Untreated dye waste can inhibit sunlight penetration, photosynthesis activity, and the growth of aquatic biota. One of the dye wastes that is often found is methylene blue. Processing of methylene blue dye can use a practical adsorption method, easy to do at a low cost. This study showed the results of methylene blue adsorption using activated perlite nitric acid adsorbent. The best activity of perlite in adsorbing methylene blue is at pH 9 with a contact time of 180 minutes which results in a maximum adsorption capacity of 3,873 mg/g. The adsorption kinetics used followed a pseudo second order-model with consecutive k and q values of 0.0055 g/mg.min and 3.3102 mg/g, while the adsorption isotherms followed the Langmuir isotherm model with qmax and KL values of 3.873 mg/g and 0.5822 L/mg, respectively.
AKTIVITAS TABIR SURYA FRAKSI METANOL DARI DAUN SIMPUR (Dillenia indica Linn.) DAN KARAKTERISASI SENYAWA ISOLATNYA Salatiana Salatiana; Endah Sayekti; Gusrizal Gusrizal
Indonesian Journal of Pure and Applied Chemistry Vol 6, No 1 (2023)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v6i1.63085

Abstract

Sunscreen activity has been tested on simpur leaves (Dillenia indica Linn.) by determining the value of sun protection factor (SPF), erythema transmission percentage (%Te) and pigmentation transmission percentage (%Tp) of each methanol extract, n-hexane, dichloromethane fraction, and methanol fraction from simpur leaves. This test was carried out using a UV-Vis spectrophotometer (λ = 200-400 nm), a variation of sample concentration of 50; 75 and 100 ppm. The methanol fraction at a concentration of 100 ppm showed the highest SPF value of 4.630 ± 0.043 and the lowest %Te and %Tp values of 32.316 ± 0.297 and 52.699 ± 0.160, respectively. Isolation of flavonoids from the methanol fraction produced a relatively pure isolate (Rf = 0.901) with code G1 in the form of a yellowish-green solid/powder (1.5 mg). Characterization of isolate G1 using the FTIR spectrophotometer showed that there were vibrations of the alcohol O-H groups (3446.79 cm-1), aliphatic C-H (2958.80-2858.51 cm-1), C=C aromatic (1635.64 cm-1), C=C aromatic (1635.64 cm-1), C =O (1730.15 cm-1), C-O alcohol (1122.57 cm-1), and aliphatic C-H (1463.97-1382.96 cm-1). Based on a comparison of the spectra of isolate G1 with the spectra from the literature, isolate G1 was predicted as a flavonoid compound in the flavan or flavanol groups
BIOSINTESIS DAN KARAKTERISASI PARTIKEL PERAK EKSTRAK TANAMAN DAUN PORANG (Amorphophallus muelleri Blume) SEBAGAI PENDETEKSI ION LOGAM MERKURI Doni Notriawan; Febrika Laila; Eka Angasa; Gustria Ernis; Teja Dwi Sutanto; Reza Pertiwi; Ida Ayu Suci
Indonesian Journal of Pure and Applied Chemistry Vol 6, No 1 (2023)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v6i1.63771

Abstract

This study aims to synthesize and characterize silver particles using Porang leaf extract (Amorphophallus muelleri Blume) and determine the selectivity of silver particles as mercury metal ion detectors. The study employed Porang leaf extract as a bioreductor and stabilizer, 0.01M AgNO3 solution as a precursor, and HgCl2 salt solution and PbCl2 salt solution as standard salt solutions to be tested for selectivity. The 2 g of Porang leaves used were cleaned, cut into pieces, allowed to stand at room temperature for three days, and mashed. Porang leaf powder was added with 50 mL of demineralized water and then heated for 15 minutes at a solution temperature of 80°C. The reaction of silver particle formation was carried out by adding Porang leaf extract and AgNO3 0.01M in variations of 1:3, 1:4, 1:5, 1:6, and 1:7, then irradiating under indirect sunlight for 15 minutes. The reaction results of a mixture of colloidal extract and AgNO3 solution showed a change in color to brownish-yellow. The color change indicated the formation of silver particles. The silver particles were then characterized with a UV-Vis spectrophotometer after 15 minutes of heating, 1 hour, and 5 hours at room temperature. The results obtained with colloidal silver particles can be synthesized with a bioreductor of Porang leaf extract (Amorphophallus muelleri Blume) with optimum variations of 1:3 and 1:4. The PSa results obtained in the mixture of silver particles formed were micro-nano-sized silver particles. The results of silver particles tested against metal ions showed that silver particles selectively detect Hg (II) metal ions in HgCl2 solutions compared to Pb (II) metal ions in PbCl2 solutions.
THE EFFECT OF ADDITION BY BUTHYLATED HYDROXYTOLUENE (BHT) ON PHYSICAL PROPERTIES OF GEOMEMBRANE FROM RECYCLED HIGH DENSTY POLYETHYLENE (HFPE) PLASTIC WASTE Veren Fransiska; Intan Syahbanu; Adhitiyawarman Adhitiyawarman
Indonesian Journal of Pure and Applied Chemistry Vol 6, No 1 (2023)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v6i1.62725

Abstract

Recycled High Density Polyethylene (HDPE) has been prepared for geomembrane construction material. The aim of this research was to study the effect of Butylated Hydroxytoluene (BHT) addition as an antioxidant on the characteristics of the resulting geomembrane. Fourier Transform Infra Red (FTIR) analysis was carried out to examine functional groups of recycled HDPE and prepared geomembranes. Mechanical properties, permeability and hydrophobicity of geomembrane were observed to determined optimum BHT addition. The results of FTIR analysis on recycled HDPE showed the presence of functional groups at wavelengths 2912 and 2847 cm-1 (C-H stretching); 1474 and 1467 cm-1 (CH2 bend); 721 cm-1 (CH2 Rock). After being formulated with other materials to obtain geomembranes, it was not found new peak indicating that the presence of BHT in geomembrane only physical interaction occurs. All of geomembranes had no permeability to water and reach 100% of hydrophobicity. The highest­ tensile test value was shown by geomembrane with 0,25 b/b% of BHT which about 21.235 MPa and 16.01 MPa for before and after soil burial test for four weeks, respectively. Perhaps might be due to the interaction between BHT at low concentrations which has lower polarity and HDPE which is nonpolar has better compatibility than at other concentrations

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