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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 21 Documents
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Search results for , issue "Vol 2, No 2 (2013)" : 21 Documents clear
Analysis Content Of Copper (Cu) And Manganese (Mn) In Carrot (Daucus Carota L.) With Atomic Absorption Spectrophotometry Methods Afniati Lanas; Amrin Amrin; Bahrizal Rizal
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.128 KB) | DOI: 10.24036/p.v2i2.3005

Abstract

Carrots (Daucus Carrota L.) is widely grown vegetables. Soil as the growth of vegetables such as carrots can be contaminated media by harmful substances, such as heavy metals. Has done research on the analysis of copper and manganese in the carrots in the area Talago Koto Baru, Tanah Datar and area Bangkaweh,Agam with Atomic Absorption Spectrophotometry method. This study aims to determine the content of copper (Cu) and manganese (Mn) in the carrots and to determine the type of good solvent in the analysis of copper (Cu) and manganese (Mn) in carrot by Atomic Absorption Spectrophotometry method. This study uses a wet destruction method, where the destruction is done with some variation of the solvent variation: pa HClO4, HNO3 pa, pa and HNO3-HClO4 (4:1). Research results showed that carrot in the area Talago Koto Baru, Tanah Datar and area Bangkaweh,Agam is still below safe limits but should still be on the alert. Best solvent for metal content analysis of Cu and Mn in the sample carrots for area Talago Koto Baru, Tanah Datar and area Bangkaweh, Agam is HNO3 pa.
Isolasi dan Karakterisasi Flavonoid dari Daun Kapuk (Ceiba pentandra L.) Putri Diana; Nazulis Z; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.714 KB) | DOI: 10.24036/p.v2i2.3035

Abstract

Have been done the isolation of flavonoids from the leaves of the kapok (Ceiba pentandra L.) in Chemical Research Laboratory, Faculty of mathematics ande Natural Sciences of the State University of Padang. This research aims to isolate and to know the characteristics of the flavonoid compounds from the leaves of kapok. Method of insulationus is maceration with methanol, followed by oil with n-hexane and ethyl acetate. Separation of the ethyl acetate fraction by coloumn chromatography using silica, eluen used ethylacetate : methanol in SGP. Test the purity of the insulation is done with KLT and melting point. Flavonoids obtained pure white-brownish powder with melting point range 263,3-263,8 0C. Test result with 10% NaOH color reagents, concentrated H2SO4 andMg-HCl showed the presence offlavonoids. Results test KKt2A bares stain is at regional aglikon flavon. The data analysis spectra IR showed the groups –OH ether, C=C aromatis and carbonyl C=O. While of spectra uv-vis the presence of a cluster of -OH on C-3. From the data up allegedly flavonoid the result of isolation is a flavone with a cluster of –OH on C-3 namely 3-hidroksiflavon.
ANALISIS KANDUNGAN KADMIUM (Cd) DAN SENG (Zn) DALAM KUBIS BUNGA (Brassica oleracea var. botrytis L) DENGAN METODE SPEKTROFOTOMETRI SERAPAN ATOM Deski Pahdinol; Amrin Amrin; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.808 KB) | DOI: 10.24036/p.v2i2.3026

Abstract

Flowers cabbage (Brassica oleracea var. botrytis L) is an important and widely grown vegetable in many places. Soil as the growth of vegetables such as flowers cabbage can be contaminated media by harmful substances, such as heavy metals like cadmium (Cd) and zinc (Zn). Analysis of cadmium and zinc contents in flowers cabbage in the Koto Baru in Tanah Datar and Padang Lua in Agam by Atomic Absorption Spectrophotometry has been done. This study aims to determine the content of cadmium (Cd) and zinc (Zn) in flowers cabbage and to know what kind of a good solvent on the analysis of the content of cadmium (Cd) and zinc (Zn) in flowers cabbage by Atomic Absorption Spectrophotometry. This study uses a wet destruction, where the destruction process done with some variation of the solvent variation: HClO4 p.a, HNO3 p.a and HNO3-HClO4 mixture (4:1). Research results showed that local flowers cabbage in Koto Baru Tanah Datar and Padang Lua Agam is still below the safety limit but still have to watch out for. Good solvent for analysis of Cd metal content in the sample flowers cabbage  for Koto Baru area of ​​Tanah Datar is HNO3-HClO4 mixture (4:1) for a Padang Lua, Agam is HClO4 p.a good solvent for analysis of Zn metal content in the sample flowers cabbage for Koto Baru area of ​​Tanah Datar and Agam, Padang Lua is HNO3-HClO4 mixture.
Optimasi Komposisi Fasa Gerak dan pH Buffer Asetat Pada Analisa Zat Warna Sintetik Rhodamin B dan Ponceau 4R Menggunakan Metoda HPLC Liza Olivia; Budhi Oktavia; Iryani Iryani
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (298.821 KB) | DOI: 10.24036/p.v2i2.3031

Abstract

One of the food addictives that is often used by many people is dye. More synthetic dyes is used in food and beverage than natural dyes time by time. According to Regulation of Health Ministry No.239/Menkes/Per/VI/85, Rhodhamin B is synthetic dye which is banned because it is a carcinogen.  However, Ponceau 4R is allowable synthetic dye. The way of using Ponceau 4R must be based on regulation of the Indonesia Health Ministry No. 722/Menkes/per/IX/88; 70 mg/kg for beverage and 300 mg/kg for food. The purpose of this research is to find the optimum condition of the mobile phase composition and pH buffer acetate.   The analysis of the Rhodamin B and Ponceau 4R were done by optimalizing the mobile phase composition and pH acetate buffer with methanol mobile phase: acetate buffer and stationary phase ODS C18 column used the HPLC method of the UV-Vis detector. The result of the optimization pH acetate buffer was pH 6 acetate buffer with a ratio composition of methanol: buffer (80:20) with a wavelength of 540 nm. Retention times obtained for Rhodamine B was 5,048 minutes and Ponceau 4R was 2,528 minutes. There were four samples containing dye Ponceau 4R and none containing dye Rhodamine B were found by using the HPLC method from the ten samples tested
Isolasi dan Karakterisasi Flavonoid dari daun sambang darah (Excoecaria cochinchinensis L) Siska Oktariza; Yustini Ma’aruf; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (270.538 KB) | DOI: 10.24036/p.v2i2.3021

Abstract

Flavonoids are greatest a group of phenolic compounds found in nature. One of the plants that contain flavonoids and used as medicine are the leaves sambang darah (excoecaria cochichinensis L). This study aims to isolate and characterize flavonoids from leaves sambang darah (excoecaria cochichinensis L). The method used is maceration using solvents methanol and fractionation with n-hexane and ethyl acetate. Separation was performed by column chromatography with silica gel 60 adsorbent and eluent ethyl acetate: methanol in SGP (Step Gradient Polarity) and recrystallization purification done. From the results obtained by the isolation of flavonoids in the form of brownish yellow solid, it has not obtained pure of flavonoids.
Pemanfaatan Limbah Lumpur Industri Crumb Rubber Sebagai Adsorben Ion Cr(VI) yang Diaktivasi dengan H3PO4 Resti Hariyani; Salmariza Sy; Mawardi Mawardi
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (265.584 KB) | DOI: 10.24036/p.v2i2.3036

Abstract

Utilization of sludge waste from wastewater treatment system using active sludge systems of Crumb Rubber Industry PT.Teluk Luas Lubuk Begalung Padang to be activated carbon that was activated by H3PO4 as adsorbent of ions Cr (VI) has been done. Characterization of activated carbon was conducted according to SNI 06-3730-1995, including the determination of iodine absorption, moisture content, and the amount of carbon bound. Besides, this research was also conducted using batch system treatment to activated carbon and inactivated carbon, including pH, contact time, and initial concentration of solution. The equation of Langmuir Isotherm was used to determine maximum capacity of activated carbon adsorption to Cr (VI). Results showed that the absorption of iodine was 48,26%, moisture content was 0.14%, and carbon bound was 24,925%. The optimum pH,  the contact time   and optimum concentration  respectively was pH3, 60 minutes and 50 mg/L for an activated carbon adsorbent and  pH2,  120 minutes and 50 mg/L for inactivated carbon adsorbent. The activator influenced to the adsorption of Cr(VI). The determination of the optimum adsorption for activated carbon adsorbent was 1,11 and 1,99 mg/g, meanwhile for inactivated carbon, it was 0,08 and 1,16 mg/g.
PEMANFAATAN SERBUK KULIT MANGGIS (Garcinia Mangostana) UNTUK PENYERAPAN ION SENG (II) Elda Gusneri; Bayharti Bayharti; Erda Sofjeni
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.068 KB) | DOI: 10.24036/p.v2i2.3027

Abstract

One of types enviromental population are water that makey it by heavy metals to enter the water. To put the heavy metals can do with used material that absorb, that cheap we chan anywhere. One of the material is Garcinia Mangostana. This resert determination to known optimum condition absorbet from zing (II) ions by Garcinia mangostana, with variety particles size : 75, 90 and 109µm, pH : 3, 4, 5, 6, 7 dan 8, and concentration zing (II) ions solution : 10, 20, 30, 40 and 50 ppm. The measurment used by Atomic Absorption Spektrophotometer. From this yield resert found absorbant optimum condition zing (II) ions by Garcinia Mangostana can happened in particles size 75µm, pH 5 and concentration zing (II) ions solution 30 ppm with absorbent capacity 0,4250 mg/g.
Determination of Maximum Adsorption Capacity of the Napa Soil on Chromium Ions (III) Syukrya Ningsih; Mawardi Mawardi; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (257.429 KB) | DOI: 10.24036/p.v2i2.3002

Abstract

Determination of maximum adsorption capacity of the Napa Soil on chromium ions (III) has been investigated, the aims of the research for to know the characteristics and maximum adsorption capacity of Napa soil on chromium (III). Experimentally, all steps were performed in series of experiment using a continuous techniques with respect to the influence of pH, initial chromium concentration, particle size, temperature heating adsorbent, solution flow rate, and determined the maximum adsorption capacity and adsorption affinity adsorbent was determined by the Langmuir Isotherm Equation and metal analysis carried out by Atomic Adsorption Spectrophotometer instrument. The results of this study showed that optimum condition at pH 5, initial chromium concentration is 250 mg/L, particle size is 850 mm, temperature heating adsorbent on 125°C, solution flow rate is 20 drops/min. Showed has the maximum adsorption capacity of the Napa Soil on chromium ions (III) is 3,28 mg/g.
Optimasi Tanah Napa Sebagai Adsorben ion Cu(II) Muhamad Firdaus; Mawardi Mawardi; Amrin Amrin
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.013 KB) | DOI: 10.24036/p.v2i2.3032

Abstract

Has been done numerous studies to reduce levels of heavy metals in sewage waste products and many methods have been developed. Adsorption method with the right choice of adsorbent is a simple but quite effective method in removing heavy metals from wastewater. Napa soil contains high amount of silica and alumina which is 63.20% and 16.55%, the amount of silica and alumina in the soil napa almost the same with natural zeolite, so it can be used as an adsorbent. In this research, study has been conducted with the aim of determining the optimum condition of Copper(II) ion adsorption with Continuous system by napa soil adsorbent obtained from Aripan, Solok. In this research, was studied the effect of various parameters that affect the absorption capacity of the napa soil to adsorp Cu (II) ion, which is the pH of the solution, the initial concentration of the solution, the temperature of heating the adsorbent, adsorbent particle size, and the eluent flow rate. These results indicate that the optimum pH is 4, optimum initial concentration of the solution is 200 ppm, while optimum adsorbent heating temperature and optimum adsorbent particle size is 125°C  and 1700 mm respectively, and the optimum flow rate is 20 drops / min. Research data obtained was in accordance with the Langmuir adsorption isotherm curve when plotted C / m as a function of C then was obtained a linear curve which means adsorption of Cu (II) ion by Napa soil takes place chemically, adsorption affinity constant and maximum adsorption capacity was determined by using Langmuir adsorption isotherm equation which is 2.483 and 0.169 mg / g respectively.
Isolasi dan Karakterisasi Flavonoid dari Daun Belimbing (Averrhoa carambola Linn.L) Rido Ardianto; Yustini Ma’aruf; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (265.809 KB) | DOI: 10.24036/p.v2i2.3022

Abstract

Research of isolation and characterization of flavonoids from the leaves of star fruit (Averrhoa carambola Linn.L) has been done. A 393 g of condensed methanol extracts obtained from 5 kg of fresh leaves starfruit. The methanol extract of hot water added, further fractionated successively with n-hexane and ethyl acetate, resulting in a 4000 ml n-hexane fraction and 5000 ml of ethyl asetat. The flavonoid phytochemical test from the fractionation showed negative fraction of n-hexane, ethyl acetate fraction and water fraction flavonoid positive. Results separation by column chromatography ethyl acetate fraction concentrated extract produced 6 fractions, namely fraction A, B, C, D, E and F. Characterization using UV light gives a brown before chromatograms steamed green ammonia and gives a dark brown color after steamed with ammonia. Based on the existing literature is suspected in fraction B contained flavones glycosides, biflavonil or unusual tersulih flavons.

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