cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Budhi Oktavia
Contact Email
budhioktavia@fmipa.unp.ac.id
Phone
-
Journal Mail Official
periodic@fmipa.unp.ac.id
Editorial Address
Departemen Kimia, FMIPA, UNP Jalan Prof. Dr. Hamka, Air Tawar, Padang, Sumatera Barat
Location
Kota padang,
Sumatera barat
INDONESIA
Jurnal Periodic Jurusan Kimia UNP
Published by Universitas Negeri Padang
ISSN : -     EISSN : 23391197     DOI : https://doi.org/10.24036/p.v11i2.113715
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology
Periodic adalah jurnal nasional yang berisi artikel-artikel bidang ilmu kimia, seperti bidang Kimia Analitik, Kimia Fisika, Kimia Anorganik, Kimia Organik dan Biokimia. Jurnal ini mempublikasikan hasil penelitian original, komunikasi singkat, dan artikel review. Artikel yang telah diterbitkan dalam jurnal ini berarti bahwa kegiatan penelitian yang diterbitkan adalah belum, dan tidak akan diterbitkan di tempat lain. Periodic (e-ISSN 2339-1197) diterbitkan oleh Jurusan Kimia dan mulai tahun 2022 disebut Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang, Indonesia. Periodic terbit berdasarkan berdasarkan surat edaran Direktorat Jenderal Pendidikan Tinggi No. 152/E/T/2012 tentang publikasi karya tulis ilmiah dan terbit sejak Oktober 2012.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 343 Documents
 21   22   23   24   25 
Pengaruh Waktu Perendaman Terhadap Penyerapan Asam Urat Menggunakan Membran Molecularly Imprinted Conducting Polimers (MICPs) Nilu Gussarsi; Budhi Oktavia; Alizar Ulianas
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116991

Abstract

Abstract –  Molecularly Imprinted Conducting Polymers (MICPs) are polymers that have cavities that can conduct electricity. Cavities in the polymer result from template removal. The method used for the synthesis of MICPs membrane is the photopolymerization method using Ultra-Violet light. Determination of uric acid levels in solution can be analyzed using a UV-Vis spectrophotometer and in blood using an easy touch. Meanwhile, to determine the electrical conductivity using a four point probe (FPP). Based on the research, it was found that the uric acid MICPs membrane had optimum absorption at a contact time of 24 hours, with an absorption capacity of 0.532 mg/g. The uric acid MICPs membrane can absorb uric acid molecules in human blood with an absorption capacity of 0.57 mg/g according to blood pH by easy touch testing. The results of this study indicate that the MICPs membrane can absorb uric acid both in solution and in blood.
Studi Kompleks Assosiasi Pb(II) Menggunakan KI dan Methylene Blue Fadilla Yuri Merti; Edi Nasra; Desy Kurniawati
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117050

Abstract

Research has been carried out on the study of the Pb(II) association complex using KI and methylene blue. This study aims to find the optimum conditions for the Pb(II) association complex such as optimum time, Iodidae concentration, pH, and methylene blue concentration. The measurement methods used are UV-Vis spectrophotometry and AAS (Atomic Absorption Spectrophotometer). Pb(II) is reacted with excess Iodidae to form an anion complex (PbI42-). The anion complex formed is then reacted with a methylene blue (MB+) cation complex to form an association complex [MB]2[PbI4]. From the results of the study, it was found that the optimum conditions for the formation of anion complexes (PbI42-) at 2 hours, a concentration of 0.4 M with an absorbance of 0.1069 A at anion wavelength of 266 nm. While the optimum conditions for the association complex [MB]2[PbI4] occurred at a wavelength of 665 nm with an absorbance of 0.6119 A, pH 3 with an absorbance of 0.9675 A and a concentration of 0.0012 % methylene blue with an absorbance of 0.1266 A. The association complex The resulting product was contacted with Pb(NO3)2 at a concentration of 0.01 ppm and was successfully concentrated by obtaining a concentration of 0.6387 ppm and an absorbance value of 0.0092 A. So that a concentration factor of 63.87 times was obtained.
Degradasi Zat Warna Methyl Orange dengan Katalis TiO2 Menggunakan Metode Fotosonolisis Suci Ramadhani; Hary Sanjaya; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116883

Abstract

Research on the degradation of methyl orange has been carried out using the photosonolysis method with the help of a TiO₂ catalyst. This study aims to determine how the effect of adding catalyst mass to the degradation of methyl orange and to determine the optimum time to degrade methyl orange. The variation of the mass of the catalyst used to degrade the methyl orange dye is from 0 grams to 0.25 grams, while the time variation is in the range of 30 minutes to 150 minutes with a 30 minute interval. The results of the measurement of the maximum wavelength and the color of methyl orange using a UV-Vis spectrophotometer were 462.8 nm with an absorbance value of 0.772. In the variation of the catalyst mass, the maximum mass obtained at 0.1 grams of TiO₂ catalyst with %D obtained was 23.46% while for the variation of the degradation time the optimum time was obtained at 120 minutes with the %D result of 32.04%. In this study, the presence of hydroxyl radicals produced during the photosynthesis process plays an important role in the process of degrading methyl orange.
Potensi Kulit Kacang Tanah (Arachis hypogaea) Sebagai Sumber Karbon Untuk Material Maju Rida Rida; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117109

Abstract

Carbon material is one example of the development of advanced materials. Carbon is the result of the decomposition of an organic compound through an imperfect carbonization process. Carbon can be utilized from organic waste materials containing cellulose, hemicellulose, lignin and starch. The composition of peanut shells is 65.7% cellulose, the high content of cellulose in peanut shells makes it a potential carbon source. The method used for the manufacture of peanut shell carbon is calcination at various temperatures of 250 0C, 300 0C, 350 0C and 400 0C. Carbon proximate analysis was carried out by testing the ash content, vapor content and bound carbon content. In this study the standard used is SNI 06-3730-1995. The results of the analysis showed that the ash content increased with increasing calcination temperature, while the vapor content decreased with increasing calcination temperature. The carbon content obtained decreases with increasing calcination temperature. The optimum condition of peanut shell carbon close to SNI 06-3730-1995 was obtained at carbon with a calcination temperature of 250 0C, 5.10% and a vapor content of 7.41% and a bound carbon content of 87.49%.
Potensi Asap Cair Hasil Pirolisis Tempurung Kelapa sebagai Biopestisida terhadap Ulat Penggerek Polong (Maruca testulalis) Tanaman Kacang Panjang (Vigna sinensis) Nofrin Alisa; Iswendi Iswendi
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116958

Abstract

Liquid smoke is a dispersion of smoke  produced by conducting smoke in the process of combustion that is not perfect from wood. Pyrolysis is the decomposition of macromolecular compounds without oxygen into simpler compounds. Liquid smoke The results of the filtration were carried out by the characterization to determine the content of their compounds and conducted a liquid smoke biopesticide test on the caterpillar polygy with spraying methods 5 times. Liquid smoke chromatogram data shows the existence of phenol compounds, carbonyl acids, ketones, furies, alkyl aril, guaikol. The liquid smoke biopesticide test on the caterpillar pods  with a variation of concentration of 0% (control), 1%, 5%, 10%, 15%, 20% over 120 minutes experiencing 0 consecutive deaths 0, 0 tails, 1 Tail, 4 tails, 5 tails, 10 tails. From the data analysis above, it can be concluded that liquid smoke the results of pyrolysis have the potential to be biopesticide.
Optimasi Penyerapan Anion Klorida Menggunakan Silika Gel (SiO2) GPTMS Dimodifikasi dengan Dimetilamina Nur Hafni Hasibuan; Budhi Oktavia; Edi Nasra; Desy Kurniawati
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116185

Abstract

Ion chloride (Cl-) is an anion that can combine with several cations to form a water-soluble salt. High chloride content in water can accelerate the rusting process on metal. So that in this research the aim is to determine the optimum conditions for the absorption of chloride anions using silica. Adsorption using silica is able to absorb anions. However, modifications are needed to improve silica adsorption. In this study, Dimethylamine was used as a modifier and Glisidoxypropyltrimethoxysilane as a bridge between silica and dimethylamine. To determine the changes in the functional groups of silica, silica-GPTMS, silica-GPTMS DMA, and silica-GPTMS DMA with chloride ions, the FTIR test was carried out. The absorption step was carried out by varying the pH (6,7,8,9, and 10), contact time (30,60,90,120, and 150 minutes), and concentration (5, 10, 15, 20, and 25 mg/L). . The results showed that the optimum conditions for absorption occurred at pH 7, contact time of 120 minutes, and a concentration of 20 mg/L with an absorption capacity of 0.250825 mg/g.
Degradasi Zat Warna Eriochrome Black-T (EBT) dengan Katalis ZnO-TiO2 menggunakan Metode Sonolisis Santika Putri; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117063

Abstract

Eriochrome Black-T (EBT) is a dye that is widely used in the textile industry, dyeing silk, wool, nylon, double fiber and in the laboratory as a complexometric titrant for the estimation of Ca2+, Mg2+ and Zn2+. This EBT dye is dangerous if released into natural waters which can significantly affect the photosynthetic activity of the aquatic environment because its decomposition products such as naphthoquinone are carcinogenic. So, its presence in drinking water and surface water can be deadly. Therefore, the dyestuff is degraded before being discharged into the environment so that the resulting environmental pollution can be described. The purpose of this research is to determine the optimum time and the addition of TiO2 doping on ZnO catalyst for the degradation of EBT by sonolysis method. The percentage of EBT dye degradation was obtained from the absorbance value measured using a UV-Vis spectrophotometer. Absorbance measurements were carried out at the maximum wavelength (λ max) of EBT, which was 535.60 nm. The results showed that the optimum time for EBT degradation was 30 minutes with a degradation percentage of 81.65%. On the effect of variations in the addition of TiO2 doping showed optimum results at ZnO-TiO2 10%  with a degradation percentage of 84.30%.
Pengaruh Penambahan Virgin Coconut Oil (VCO) Terhadap Sifat Mekanik Dan Biodegradasi Plastik Biodegradable Berbasis Selulosa Bakteri –Polietilen Glikol (PEG) Dari Air Kelapa (Cocos nucifera) Adhitya Suryadinata; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116897

Abstract

Biodegradable plastics are plastics that are easily degraded by microorganisms. This study aims to determine the effect of adding virgin coconut oil additives to the mechanical properties and biodegradation of biodegradable plastic based on PEG bacterial cellulose from coconut water (Cocos nucifera). This study used 14% polyethene glycol 400 as a plasticizer with variations in the volume of virgin coconut oil, namely 2 mL, 4 mL, 6 mL, and 8 mL. The mechanical properties tested here are looking at the tensile strength, elongation, and elasticity values. The maximum result from testing the mechanical properties obtained is the addition of 6 mL of virgin coconut oil with a tensile strength value of 71,81 MPa which already meets the SNI standard for synthetic plastics, which is in the range of 24,7-302 MPa, the elasticity value obtained is 1819,275 MPa, and 3.9% elongation value. In the biodegradation test, it was found that the 15-day burial was degraded by more than 50%, where the more virgin coconut oil was added, the plastic's biodegradability decreased, but this is still much better than plastic made from synthetic materials, which can take decades. The functional group analysis using FTIR did not show any other functional groups formed, and the results of the analysis of the degree of crystallinity on biodegradable plastics obtained that the degree of crystallinity of pure SB plastic was 83.75%, SBPEG was 70.68%, and SBPEG-V 6 mL 81.31%.
Studi Kompleks Assosiasi Pb (II) Dengan Penambahan KI dan Rhodamin B Muhammad Satrio Hutomo; Edi Nasra; Syamsi Aini; Hesty Parbuntari
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117111

Abstract

Abstract — Research has been carried out on the study of the Pb(II) association complex using KI and Rhodamine B. This study aims to find the optimum conditions for the Pb(II) association complex such as iodine concentration, solution pH, and Rhodamine B concentration. The measurement method used is the UV spectrophotometry method. -Vis and AAS (Atomic Absorption Spectrophotometer). Pb(II) is reacted with excess iodine to form an anion complex (PbI4)2-. The anion complex formed is then reacted with a Rhodamine B cation complex (RB+ ) to form an association complex [RB]2[PbI4]. The results showed that the optimum condition of iodine for the formation of the anion complex (PbI4)2-  at a time of 2 hours, a concentration of 0.4 M with an absorbance of 0.1069 A at a maximum wavelength of 266 nm. While the optimum conditions for the association complex [RB]2[PbI4]2- occurred at a wavelength of 555 nm with an absorbance of 0.3348 A, pH 5 with an absorbance of 3.4101 A and a concentration of Rhodamine B 0.001% with an absorbance of 2.2798 A. The resulting association complex contacted with Pb(NO3)2- at a concentration of 0.01 ppm succeeded in concentrating by obtaining a concentration of 0.7419 ppm and an absorbance value of 0.0108 A. So that a concentration factor of 74.19 times was obtained.
Potensi Biji Durian(Durio zibethinus) di Kota Padang Sebagai Sumber Karbon untuk Material Maju Oktavia Wulandari; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117067

Abstract

Indonesia is a maritime country that has a lot of natural resources, but the processing of these resources is still lacking. One of the efforts to develop these natural resources is in the form of advanced materials. The purpose of this research is to analyze and determine the optimal temperature of durian seed carbon. Carbon is synthesized through a calcination process with a temperature variation of 250oC-400oC for 1 hour. The carbon obtained was tested for ash content, vapor content and analysis of bound carbon content. Based on the results of the study which showed that the higher the temperature, the higher the ash content, while the vapor and bound carbon content decreased. The optimal result in this study which is in accordance with SNI-06-3730-1995 is durian seed carbon with a calcination temperature of 250oC.

Page 23 of 35 | Total Record : 343

 21   22   23   24   25 

Filter by Year

2012 2025


Reset
Filter By Issues
All Issue Vol 14, No 2 (2025): PERIODIC Vol 13, No 3 (2024): PERIODIC Vol 13, No 2 (2024): PERIODIC Vol 13, No 1 (2024): PERIODIC Vol 12, No 3 (2023): PERIODIC Vol 12, No 2 (2023): PERIODIC Vol 12, No 1 (2023): PERIODIC Vol 11, No 3 (2022): PERIODIC Vol 11, No 2 (2022): PERIODIC Vol 11, No 1 (2022): PERIODIC Vol 10, No 2 (2021): PERIODIC Vol 10, No 1 (2021): PERIODIC Vol 9, No 2 (2020): PERIODIC Vol 9, No 1 (2020): PERIODIC Vol 8, No 2 (2019): PERIODIC Vol 8, No 1 (2019): PERIODIC Vol 5, No 2 (2016) Vol 2, No 2 (2013) Vol 2, No 1 (2013) Vol 1, No 2 (2012) Vol 1, No 1 (2012) More Issue