Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Indonesian Journal of Pure and Applied Chemistry

IJoPAC
Website

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

5 6 7 8 9

KOMPOSISI UNSUR DAN KARAKTERISASI MINERAL MAGNETIK DALAM RED MUD, RESIDU BAUKSIT DI PT. INDONESIA CHEMICAL ALUMINA (ICA) KALIMANTAN BARAT (ELEMENTAL COMPOSITION AND MINERAL CHARACTERISTICS OF MAGNETIC RED MUD, BAUXITE RESIDUE AT PT. INDONESIA CHEMICAL ALUMINA (ICA), WEST KALIMANTAN) Titin Anita Zaharah; Wanda Rossalina; Imelda Hotmarisi Silalahi
Indonesian Journal of Pure and Applied Chemistry Vol 4, No 3 (2021)
Publisher : Tanjungpura University

Red mud or commonly called bauxite residue is solid waste generated from the purification of bauxite into alumina through the Bayer process. The red mud was initially dried under the sun then was magnetically separated to give magnetic sand. The magnetic sand was neutralized using copious of water, refined and then characterized using XRF and XRD methods. The results show that the main elements contained in the magnetic sand from the red mud are silicon, aluminum, iron, titanium, and magnesium. XRD analysis using Search-Match followed by the calculation using Rietveld refinement showed that the sand consisted of ferrosillite (55.3%), hematite (33.9%) and ilmenite (10.7%). Elemental analysis using XRF showed the percentage of Fe 29.15%, Si 22.49%, Ca 3.19%, and Ti 2.92%, followed by other elements with low percentages.

KANDUNGAN TOTAL FENOL DALAM EKSTRAK METANOL DAN ETIL ASETAT Caulerpa racemosa (TOTAL PHENOL CONTENTS IN METHANOL AND ETHYL ACETATE EXTRACTS OF Caulerpa racemosa) ilmauwati Qurniasih; Ikha Safitri; Anthoni B. Aritonang; Warsidah Warsidah; Shifa Helena
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 2 (2022)
Publisher : Tanjungpura University

Caulerpa racemosa belongs to Chlorophyceae grow abundantly along Indonesian waters, including Kabung Island, West Kalimantan. This species has important role and is able to synthesize a wide range of bioactive compounds that are potential to be developed. However, their existence have not been used optimally. This study aims to determine the bioactive compound and evaluate total phenol contents in methanol and ethyl acetate of C. racemosa from Kabung Island. The methods in this study were maceration, phytochemicals, and Folin-Ciocalteau using Atomic Absorption Spectroscopy (AAS). The result showed that methanol and ethyl acetate extracts of C. racemosa contained alkaloids, flavonoids, saponins, phenols, and tannins. Thus, the total phenol content in ethyl acetate extracts was 0.077817 mgGAE/g while in methanol extract was 0.05682 mgGAE/g, respectively. This value was classified as low category.

SINTESIS DAN KARAKTERISASI MOLECULARLY IMPRINTED POLYMERS MENGGUNAKAN METIL METAKRILAT DAN ETILEN GLIKOL DIMETAKRILAT SEBAGAI ADSORBEN DI-(2-ETILHEKSIL) FTALAT (SYNTHESIS AND CHARACTERIZATION OF MOLECULARLY IMPRINTED POLYMERS USING METHYL METHACRYLATE AND ETHYLENE GLYCOL DIMETACRILATE AS ADSORBENT DI-(2-ETILHEKSIL) PHTHALATE) Risna Jupri; St Fauziah; Paulina Taba
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 3 (2022)
Publisher : Tanjungpura University

Molecularly Imprinted Polymer (MIP) is an intelligent synthetic material because it has the ability to selectively recognize target molecules. This study aims to synthesize, characterize and analyze the performance of MIP. MIP material was synthesized using di-(2-Ethylhexyl) phthalate (DEHP) as a template molecule, methyl methacrylate (MMA) monomer combined with ethylene glycol dimethacrylate (EGDMA) as a crosslinker by precipitation polymerization method. MIP materials were characterized by SEM-EDS instrument, FTIR spectrometer, SAA instrument, and UV-Vis spectrophotometer. The test variables for the adsorption ability of MIP material on DEHP compounds were time and concentration. The results showed that the synthesized MIP was in the form of a coarse white solid with a stiff texture. Characterization with the EDS instrument showed a decrease in the mass percent of C and percent of C atoms which indicated the formation of MIP_DEHP_MMA-co-EGDMA(TE) and the surface morphology characterized by the SEM instrument was composed of small grains that tend to be uniform and have pores. The bonds that affect the formation of polymers characterized by FTIR were –C=C, –C=O, and –CO. Characterization with the SAA instrument was 142,2770 m2/g, the total pore volume was 0,2616 cm3/g and the average pore radius was 7.3562 nm, indicating mesoporous material. The optimum time for adsorption of MIP_DEHP_MMA-co-EGDMA(TE) to DEHP was 120 minutes. MIP_DEHP_MMA-co-EGDMA(TE) followed the pseudo-second-order kinetics model and the adsorption obeyed the Freundlich adsorption isotherm

KANDUNGAN FITOKIMIA DAN NILAI SUN PROTECTION FACTORS (SPF) PADA EKSTRAK METANOL Hypnea pannosa, Turbinaria decurrens, DAN Caulerpa serrulata. (PHYTOCHEMICAL CONTENT AND VALUE OF SUN PROTECTION FACTORS (SPF) IN METHANOL EXTRACTS OF Hypnea pannosa, Turbinaria decurrens, AND Caulerpa serrulata) Dewi Kartika Putri; Nora Idiawati; Mega Sari Juane Sofiana
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 2 (2022)
Publisher : Tanjungpura University

Seaweed grows abundantly in Indonesian waters. Seaweed is an important commodity and valuable for the cosmetic industry. The aim of this research was to determine the phytochemical content and SPF value of the methanol extract of seaweeds, namely Caulerpa serrulata, Turbinaria decurrens, and Hypnea pannosa. The sample was macerated with methanol solvent. The methanol extract of C. serrulata obtained the highest yield of 4.42 g. The results of phytochemical screening on C. serrulata, T. decurrens, and H. pannosa contains alkaloids, flavonoids, terpenoids, tannins, and saponins. The SPF of methanol extract was analyzed by UV-Vis Spectrophotometer. SPF values with a concentration of 100 ppm were obtained for C. serrulata (4.80), T. deccurens (0.81), and H. pannosa (0.80). The methanol extract from C. serrulata was the highest SPF. It was categorized in the moderate protection category.

KARAKTERISASI SENYAWA ASAM LEMAK PADA AKAR TUMBUHAN LANGSAT (Lansium domesticum Correa) (CHARACTERIZATION OF FATTY ACID COMPOUNDS IN THE ROOT OF LANGSAT PLANT (Lansium domesticum Correa) Azzizah Laila; Harlia Harlia; Rudyansyah Rudyansyah
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 3 (2022)
Publisher : Tanjungpura University

The chemical structure of fatty acid compounds in plant parts other than seeds and fruit is still not widely known even though it has various benefits. One of the plants known to contain fatty acid compounds is Langsat. This research was conducted to characterize the structure of fatty acid compounds and the content of secondary metabolites in the roots of the langsat plant. The fatty acid characterization process was carried out by spectroscopy while the secondary metabolite content was analyzed by phytochemical screening test. Based on the spectrum of Proton Nuclear Magnetic Resonance (H-NMR) in acetone-d6 solvent at a frequency of 500 MHz, chemical shift data were obtained at 0.89 ppm (t, 3H), 1.33 ppm (m, 6H), 1.63 ppm (m, 2H), 2.33 ppm (t, 2H) and 8.14 ppm (s, 1H) and the results of phytochemical tests on the methanol extract of langsat root are known to contain alkaloids, terpenoids, flavonoids, phenolics, and saponins. Based on these data and compared with the literature, it is suspected that L1 isolates have similarities with the structure of compounds belonging to the fatty acid group.

ISOTERM ADSORPSI Pb(II) PADA KARBON AKTIF TEMPURUNG KELAPA DENGAN VARIASI KONSENTRASI AKTIVATOR NATRIUM BIKARBONAT (ISOTHERMAL ADSORPTION OF Pb(II) BY ACTIVATED CARBON WITH VARIATIONS IN CONCENTRATION OF SODIUM BICARBONATE) Erma Maruni; Nurlina Nurlina; Nelly Wahyuni
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 2 (2022)
Publisher : Tanjungpura University

ABSTRACT Activated carbon is a porous solid that contains 85-95% carbon. The study used coconut shells as carbon sources and sodium bicarbonate as activators. Sodium bicarbonate can release carbon dioxide (CO2), where the CO2 will be used as a carbon donor. The study aims to explain the properties of carbon, activated carbon (KA) and its performance test in the solutions of Pb(II) ions. Metallic lead is toxic, which can slow down the normal working of red blood cells so that it can cause anaemia and can also inhibit the biosynthesis of haemoglobin. The research phase starts from the pyrolysis of coconut shells (t =2 hours, T=230 oC) to carbon. Carbon is activated with the variated percentage of sodium bicarbonate from 0 % to 8% and soaked for 24 hours (KA 0%, KA 4% and KA 8%). Activated carbon is characterized by water content, ash content, uptake of iodine, and methylene blue following the SNI method. Carbon, KA 0%, KA 4% and KA 8% tested its performance as adsorbent ion Pb(II) from PbNO3 solution with concentrations of 5, 10, 15, 20 and 25 ppm. The results showed that the water content, ash levels, and uptake of blue methylene KA met SNI No. 06-3730-1995. The highest adsorption efficiency at five ppm Pb(II) of carbon = 86.87%, KA 4% = 99.01% Isotherm adsorption of Pb(II) ions fitted to Langmuir for Carbon and KA 4% with K = 1.5044 L/g, am = 0.11 mg/g and K= 4.9468 L/g, am = 1.0735 mg/g, respectively

PENENTUAN KADAR LOGAM BERAT TIMBAL (Pb) DAN Kadmium (Cd) PADA KERANG BULU (Anadara antiquata) DI PERAIRAN SEDANAU KABUPATEN NATUNA (DETERMINATION OF LEVELS OF HEAVY METALS Lead (Pb) AND Cadmium (Cd) IN BULU SHELLS (Anadara antiquata) IN SANDANA WATERS, NATUNA REGENCY) Samira Samira; Warsidah Warsidah; Dwi Imam Prayitno
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 3 (2022)
Publisher : Tanjungpura University

The waters of Sedanau, Natuna Regency are congested with traffic activities of inter-island transport ships and the construction of docks that have the potential to cause pollution to the aquatic environment. Determination of the levels of heavy metals (Pb) and (Cd) in feather shells (Anadara antiquata) in these waters has been carried out. The purpose of this study was to determine the concentration of heavy metals Pb, Cd in feather shells (Anadara antiquata) which was carried out for 2 time periods, 2020 and 2021 at 2 different sampling stations. Station 1 is close to fishing activities, fishing boat traffic docks and inter-island passenger ships, station 2 is close to fishing boat docks and floating net cages but far from fishing activities and ship traffic. Measurement of the concentration of heavy metals Pb and Cd using the Atomic Absorption Spectrophotometer (SSA) method with reference to the Indonesian National Standard (SNI) Number 06-6992.2-2004 heavy metals Pb and Cd in feather shells (Anadara antiquata). The results of the measurement of heavy metal concentrations of Pb and Cd in feather shells (Anadara antiquata) in the first year were the content of (Cd) at station 1 of 0.0214 g/g, station 2 of 0.0236 g/g and (Pb) of station 1 of 0. 0.0109 g/g, station 2 was not detected, while in the second year the content (Cd) of station 1 was 1.3472 g/g, station 2 was 0.9980 g/g and (Pb) stations 1 and 2 were not detected. heavy metal content. Measurements in the second year of heavy metal content of Pb and Cd were lower than in the first year which had exceeded the threshold allowed in the Indonesian National Standard (SNI) No. 7387 of 2009 concerning the Maximum Limit of Heavy Metal Contamination in Food Lead (Pb) 1.5 mg/kg and Cadmium (Cd) 1.0 mg/kg

IDENTIFIKASI KOMPONEN UTAMA MINYAK ATSIRI DAUN UJUNG ATAP (Baeckea frutescens L.) DAN UJI AKTIVITAS ANTIBAKTERI TERHADAP BAKTERI Escherichia coli IDENTIFICATION OF MAIN COMPONENTS OF LEAF TIP ESSENTIAL OIL (Baeckea frutescens L.) AND ANTIBACTERIAL ACTIVITY TEST AGAINST Escherichia coli BACTERIA Eka Wahyuni; M Agus Wibowo; Ajuk Sapar
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 2 (2022)
Publisher : Tanjungpura University

Baeckea frutescens L is a tropical plant that usually grows in coastal areas. Its leaves resemble needles with trees that resemble large pines. Baeckea frutescens L can be found in various regions in Indonesia, one of which is in Nanjung Village, Ketapang Regency, and West Kalimantan. Baeckea frutescens L essential oil was obtained by isolation using steam distillation. The results obtained from the isolation of the essential oil of Baeckea frutescens L was a yield of 0.0037% (v/v) and a density of 0.874 g/mL. Baeckea frutescens L essential oil was then analyzed using GC-MS. The results of the analysis showed that there were 32 compounds, with the main compounds being -ocimene, eucalyptol, -myrcene, -humulene, -terpineol. The results of the antibacterial activity test against Escherichia coli bacteria, concentrations of 5% (15.9 mm), 2.5% (15.6 mm), 1.25% (12.9 mm) and 0.625% (11.8 mm).

POTENSI SENYAWA OKSIDA DARI BLONDO SEBAGAI KATODA BATERAI (POTENCY OF OXIDE COMPOUNDS FROM BLONDO AS BATTERY CATHODE) Indra Amin Jaya; Intan Syahbanu; Nelly Wahyuni
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 3 (2022)
Publisher : Tanjungpura University

The limited source of Lithium (Li) as the main material for battery cathodes has become a problem in the development of the new and renewable energy (EBT) sector. Based on their reduction potential and availability on earth, elements that might be suspected include Potassium (K), Sodium (Na), Magnesium (Mg) and Calcium (Ca). All cannot be obtained from natural ingredients, one of which is blondo. Blondo is a by-product of coconut oil processing that has not been used optimally. This study used the calcination process by varying the time (5, 7, 9 hours) and temperature (450, 550, 650°C) to obtain optimal oxide compounds from blondo. Making the cathode using a mixture of blondo and Polvinyl Alcohol (PVA) with a composition ratio of 20:1 attached to a stainless steel plate. Testing the percentage of oxide compounds was carried out using X-Ray Fluorescence (XRF) which showed that the calcination process caused the percentage levels of oxide compounds to increase K2O, P2O5, MgO and Cl. However, when the calcination time and temperature were increased, it did not give a much different effect on the levels of oxide compounds produced previously. The effect of calcination temperature is known from the results of X-Ray Diffraction (XRD) which shows that the higher the calcination temperature, the smaller the crystal size of the oxide compound. At temperatures of 450, 550 and 650°C the yields are 50.0; 47.5 and 36.4 nm. This is also supported by the results of XRF testing where K2O is the most dominant component of the oxide compound in calcined blondo. The test as a cathode material was carried out for three cycles resulting in an average charge capacity of 14.67 mAh, and an average discharge capacity of 5.34 mAh so that the average efficiency was 55.68%.

ISOLASI DAN KARAKTERISASI SENYAWA FENOLIK DARI DAUN PUTAT (Planchonia valida Blume) (ISOLATION AND CHARACTERIZATION OF PHENOLIC COMPOUND FROM PUTAT LEAVES (Planchonia valida Blume)) syafri syamsudin; Andi Hairil Alimuddin; Berlian Sitorus
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 2 (2022)
Publisher : Tanjungpura University

Gallic acid have been isolated from the leaves of the Putat plant (Planchonia valida Blume). This study aimed to isolate and characterize isolates from Putat leaves by phytochemical and FTIR spectrophotometry. The research procedures included extraction by maceration, partitioning by fractionation, vacuum liquid chromatography (KCV), gravity column chromatography (KKG), thin layer chromatography (TLC), and FTIR analysis. A total of 1400 grams of putat leaf powder was macerated to produce 159.243 grams (11.38%) of methanol extract. A total of 101 grams of methanol extract was dechlorophyllated to obtain 21.430 grams (21.21%) of dechlorophyllated extract. The dechlorophyllated extract was partitioned gradually with n-hexane and ethyl acetate to produce n-hexane fractions of 0.341 grams (1.591%), and ethyl acetate of 10.143 grams (47.33%), and methanol of 9.170 grams (42.79%). A phytochemical test showed that in the dechlorophyllated extract, the methanol and ethyl acetate fractions contained alkaloids, phenolics, flavonoids, and terpenoids while the n-hexane fraction contained alkaloids and flavonoids. A total of 7 grams of ethyl acetate fraction was fractionated by vacuum liquid chromatography to produce fractions B1 to B8. The B4 fraction was continued to the separation step by gravity column chromatography so that the fractions S1 to S9 were obtained. The S4 fraction was continued to the separation stage using preparative thin layer chromatography (TLC) to produce isolates S4.1 to S4.5. Isolate S4.1 was tested for purity by two-dimensional TLC showed that the isolate was not pure. The results of the phytochemical test with 5% FeCl3 spray reagent indicated a positive phenolic compound which was strengthened by FTIR characterization of the presence of –OH, -CH aromatic, -CH aliphatic, C=C, C=O and C-O goups. Based on these results, it was concluded that the isolate from the dechlorophyllated extract of Putat leaves belonged to phenolic compounds.

Page 7 of 13 | Total Record : 129

5 6 7 8 9

Filter by Year

2018 2026

Filter By Issues

All Issue Vol 9, No 1 (2026) Vol 8, No 3 (2025) Vol 8, No 2 (2025) Vol 8, No 1 (2025) Vol 7, No 3 (2024) Vol 7, No 2 (2024) Vol 7, No 1 (2024) Vol 6, No 3 (2023) Vol 6, No 2 (2023) Vol 6, No 1 (2023) Vol 5, No 3 (2022) Vol 5, No 2 (2022) Vol 5, No 1 (2022) Vol 4, No 3 (2021) Vol 4, No 2 (2021) Vol 4, No 1 (2021) Vol 3, No 3 (2020) Vol 3, No 2 (2020) Vol 3, No 1 (2020) Vol 2, No 3 (2019) Vol 2, No 2 (2019) Vol 2, No 1 (2019) Vol 1, No 3 (2018) Vol 1, No 2 (2018) Vol 1, No 1 (2018) More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Ajuk Sapar

Contact Email
ajuk.sapar@chemistry.untan.ac.id

Phone
+6281282990575

Journal Mail Official
anthoni.b.aritonang@chemistry.untan.ac.id

Editorial Address
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Tanjungpura University Jl. Prof. Dr. Hadari Nawawi, Pontianak, Kalimantan Barat, Indonesia

Location
Kota pontianak,

Kalimantan barat

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Ajuk Sapar

Contact Email ajuk.sapar@chemistry.untan.ac.id

Phone +6281282990575

Journal Mail Official anthoni.b.aritonang@chemistry.untan.ac.id

Editorial Address Department of Chemistry, Faculty of Mathematics and Natural Sciences, Tanjungpura University Jl. Prof. Dr. Hadari Nawawi, Pontianak, Kalimantan Barat, Indonesia

Location Kota pontianak, Kalimantan barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Ajuk Sapar

Contact Email
ajuk.sapar@chemistry.untan.ac.id

Phone
+6281282990575

Journal Mail Official
anthoni.b.aritonang@chemistry.untan.ac.id

Editorial Address
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Tanjungpura University Jl. Prof. Dr. Hadari Nawawi, Pontianak, Kalimantan Barat, Indonesia

Location
Kota pontianak,

Kalimantan barat

INDONESIA