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Jurnal Periodic Jurusan Kimia UNP

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Published by Universitas Negeri Padang

ISSN : - EISSN : 23391197 DOI : https://doi.org/10.24036/p.v11i2.113715

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

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Studi Co-Precipitation Tembaga (II) Menggunakan Coprecipitant Al(OH)3 pada Sungai Batang Arau Kota Padang Diukur dengan Metoda Spektrofotometri Serapan Atom (SSA) Yusuf .; Indang Dewata; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013)
Publisher : Departemen Kimia FMIPA UNP

A study in the development co-precipitation method and natural samples was applied to the Batang Arau River in Padang City. Sampling was done once in the month of November 2012, by random sampling on the selected point along the river which was considered to represent the river. Sampling points taken in the river upstream Lubuk Paraku Kor were named sample 1, the sampling points in the middle of the river called hilalang padang besi were called as sample 2, the third sampling points downstream to the mouth of the river were called the sample stream 3. The analysis was performed with the optimization of pH and volume optimization before it was applied to the sample. The result was the determination of the optimum pH conditions co-precipitant Al(OH)3 with atomic absorption spectroscopy air acetylene flame occurred at pH 6, the optimum volume coprecipitant used in the co-precipitation method was the addition of Al(OH)3 as much as 11 mL. Content of Copper (II) obtained at the optimum conditions at upstream was 2,22ppm, in the middle of the river was 1,294 ppm and 1,2 ppm was the content at the river mouth, with an average concentration factor of 104 times compared to direct measurement without the co-precipitation. Quality Standards based on PP. 82 Year 2001 Class II was still in the limited threshold 0,02 ppm.

Uji Bioaktivitas Antidiabetes Ekstrak Etil Asetat dari Kulit Buah Jengkol (Pitecellobium jiringa (Jack) Prain ex King) pada Mencit Putih (Mus musculus L) Jantan Elfi Yenti; Iryani Iryani; Erda Sofjeni
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Diabetes mellitus is a metabolic disease characterized by blood glucose level that exceed normal limits (hyperglycemia). Treatment of this disease can be done with medicall and herbs. Among the herbal treatment is to use plants such as pandanus pandan wangi, sambiloto, rind mahkota dewa and rind jengkol (Pithecellobium jiringa (Jack) Prain ex King) which has antidiabetic effect. We have done a research of antidiabetic bioactivity of ethyl acetate extract from the rind jengkol on white male mice. The goal of research to determine the effect of ethyl acetate extract of the rind jengkol in decreasing blood glucose levels of the male white mice (Mus musculus L.), and to determine the dose and timing of the ethyl acetate extract in lowing blood glucose level to the olwest point. Research was conducted with on experimental study with a completely randomized design (CRD) with two factor variation is doses of ethyl acetate extract (125, 250, and 500 mg / kg mice) and treatment time (60,90,120, and 150 minutes). This study uses a glucose tolerance test. Blood glucose level of mice were measured using a Glucose Multicheck NESCO ®. Data were statistically analyzed using analysis of variants (ANOVA), followed by Duncan's multiple reng test. The result showed that the ethyl acetate extract of the rind jengkol on white male mice gives the effect on decreasing the mean blood glucose level, which Fcalculated> Ftable. Fcalculated is 10.93, while the F table is 4.77 (0.01 α). Dose of ethyl acetate extract rind jengkol that gives the highest blood glucose level drop is 500 mg / kg with a treatment time of ethyl acetate extract of rind jengkol 150 minutes.

Pemanfaatan Serbuk Gergaji Kayu sebagai Inhibitor Korosi Baja ASSAB 760 di Udara Refi Yeni; Yerimadesi Busmairizal; Desy Kurniawati
Jurnal Periodic Jurusan Kimia UNP Vol 1, No 1 (2012)
Publisher : Departemen Kimia FMIPA UNP

Corrosion problems can cause serious harm, either directly or indirectly, such as the age of the building construction to be reduced from the planned time, resulting in reduced toughness, and environmental pollution. One way to slow the rate of corrosion is to use the inhibitor extract sawdust. Extract sawdust containing lignin can form complexes with iron from steel and adsorbed on the steel surface thus blocking contact between the steel with oxygen in the air. This study aims to utilize waste wood sawdust as steel corrosion inhibitors, view optical surfaces steel before and after coated inhibitor and determine the efficiency of the steel corrosion inhibition by extract sawdust. The method used to determine the rate and efficiency of corrosion is the gravimetric method, which is based on a reduction in weight (weight loss) of steel. Steel surface before and after the coated sawdust extracts viewed using a stereo microscope with a magnification of 40 times. The result showed that sawdust can be used as a corrosion inhibitor of steel with optimum efficiency of 65,398%, from optical picture can be seen that the steel surface is not coated sawdust extract rougher than the surface of the coated steel.

Studi Kopresipitasi Zn2+ Menggunakan Al(OH)3 sebagai Kopresipitan Yollafebrisa Wizul; Indang Dewata; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Research of study copresipitation Zn2+ using Al(OH)3 as coprecipitant has been done. This study aims to determine the optimum conditions for coprecipitation of Zn2+ by Al(OH)3, and influence of foreign ions. This study uses variation pH about 5,0 – 10,0; variation of eluent volume about 8,0 – 14,0; variation of concentrated HNO3 volume about 1,0 – 5,0; and variation of concentration Cu2+ about 0,8; 1,2; 1,6; 2,0 and 2,4. Measurement concentration of Zn2+ using Atomic Absorption Spectroscopy (AAS) with wavelength of 213,9 nm. The result showed the optimum conditions occur at pH about 8, 12 mL of eluent and 1 mL of concentrated HNO3 with the absorption capacity of 0,074 mg/g. Meanwhile, the presence of foreign ions such as Cu2+ has influenced the coprecipitated Zn where concentration of the coprecipitated Zn decreased with increasing the concentration of foreign ions.

KONDISI PEMBENTUKAN KOMPLEKS ION LOGAM KALSIUM DAN MAGNESIUM DENGAN OKSIN SEBAGAI PENGOMPLEKS Patricia Helena; Budhi Oktavia
Jurnal Periodic Jurusan Kimia UNP Vol 8, No 1 (2019): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

8-Hydroxyquinoline or oxine is a complexing agent which can form complexes with all metal ions in the nonpolar state. Because of the ability of oxine to form metal-oxinate complexes, it is difficult to perform qualitative and quantitative analysis if one sample contains many metal ions. The purpose of this study is to obtain the optimum conditions for the formation of compounds of Ca-Oxinic and Mg-Oxinic complexes. The reaction between Ca2 + and Mg2+ ions forms a yellow chelate complex. The results of the study showed that the Ca-Oxinic complex compound gave maximum absorbance at a wavelength of 450 nm. The optimum concentration of Ca-oxynat complex formation was 15 ppm with optimum pH of Ca2+ 4 ion with stirring time for 20 minutes and achieving stability of complex formation in 45 minutes minutes. While the compound Mg-Oxinat complex provides maximum absorbance at a wavelength of 455 nm. The optimum concentration of the formation of Mg-oxinate complex was 20 ppm with the optimum pH of Mg2+ 4 ions with stirring time for 20 minutes and achieved the stability of complex formation in 40 minutes minutes.

Analisis Besi (Fe) dan Aluminium (Al) dalam Tanah Lempung di Daerah Kabupaten Tanah Datar Secara Spektrofotometri Serapan Atom Dita Ardilla; Amrin .; Bahrizal Rizal
Jurnal Periodic Jurusan Kimia UNP Vol 1, No 1 (2012)
Publisher : Departemen Kimia FMIPA UNP

Telah dilakukan penelitian tentang analisis besi dan aluminium dalam tanah lempung yang terdapat di daerah Kabupaten Tanah Datar secara spektrofotometri serapan atom. Penelitian ini bertujuan untuk menentukan kandungan besi (Fe) dan aluminium (Al) dengan jenis pelarut, ukuran partikel dan volume pelarut terbaik secara spektrofotometri serapan atom. Penelitian ini menggunakan metoda destruksi basah, dimana proses pendestruksian dilakukan dengan beberapa variasi yaitu variasi pelarut: HCl pekat, HNO3 pekat, dan HCl-HNO3 pekat (3:1), variasi ukuran partikel yaitu ≤ 63 µm, > 63 - ≤ 75 µm, dan > 75 - ≤ 90 µm serta variasi volume pelarut 25 mL, 30 mL, 35 mL, 40 mL, 45 mL. Hasil penelitian menunjukkan kadar besi terbesar didapatkan dengan menggunakan 30 mL pelarut HCl-HNO3 pekat (3:1) yaitu 4,504% dengan ukuran partikel ≤ 63 µm sedangkan kadar aluminium terbesar didapatkan dengan menggunakan 40 mL pelarut HCl-HNO3 pekat (3:1) yaitu 16,715% dengan ukuran partikel terbaik ≤ 63 µm.

Analisa Kualitas Air Sungai Batang Idas Kecamatan Lubuk Kilangan Indarung Padang pada Bulan Desember 2011 dan Maret 2012 Melisa Sri Hardianti; Indang Dewata; Hardeli Hardeli
Jurnal Periodic Jurusan Kimia UNP Vol 1, No 2 (2012)
Publisher : Departemen Kimia FMIPA UNP

Has done research about determination water quality in Batang Idas River at December 2011 to Maret 2012 with purpose to knows degree of water pollution with doing analisys of temperature, DHL, TSS, TDS, pH, DO, BOD, COD, an analisys consentration of Fe, Ca, and Al metal in water and sediment. The next preposition with rule government number of 82, 2001th and it evaluated. Result of experiment look that weather sampling time can influence the result. I got some parameter concentration from low value to high value are temperature is 22-300C, pH is 6.1-8.6, DHL is 0.078-0.201 mS/cm, TSS is 108-6149 mg/l, TDS is 39-130.78 mg/l, DO is 7.39-12.73 mg/l, BOD is 0.65-2.17 mg/l, COD is 1.71-74.31 mg/l, Fe metal is 0.3-119.6 ppm, Ca metal is 9.34-5371 ppm, Al metal is 5.2-7.26 ppm, and total concentration metal in sedimentis 0.019-46.61 %. The average concentration of some parameter exist under limit certainty rule government number of 82, 2001th except to COD in area 2, 3 and TSS in area 2, 3 and 4. Concentration of metal past over limit RMC (Recommendation Maximun Concentration for Water Irrigation). The conclusion that even increase concentration some parameter in mine area and followed increase concentration some parameter in Batang Idas River and in sail down than to rise. The reason is waste from mine limestone area, activity of human, and erosion of land.

SINTESIS DAN KARAKTERISASI NANO ZnO DOPING CU Siltiwi Mandar; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 8, No 1 (2019): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The photodegradation process is a combination of photochemical processes with catalysts which are generally semiconductor materials. One of the photocatalysts that is being developed is zinc oxide (ZnO) in nanometer size to optimize the degradation process of organic compounds. Synthesis Nano zinc oxide (ZnO) can use the sol-gel method, the sol-gel method is the best method in making nanoparticles that produce uniform size and high purity. XRD (X-Ray Diffraction) test results show the size of Nano zinc oxide (ZnO) which is 27 nm. Nano zinc oxide (ZnO) has a band band 3.37 eV so that it is less suitable to be applied to visible light. Therefore it is necessary to do coupling with other metals such as Cu. The results of Nano zinc oxide (ZnO) doped Cu 7% have a low band gap of 2.57 eV so that it is easy to excite valence band electrons to the conduction band.

Optimasi Tanah Napa sebagai Adsorben Ion Logam Kromium (IV) Mawardi Anwar; Rahmi Khairun Nisa
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013)
Publisher : Departemen Kimia FMIPA UNP

A study concerning the determination of the optimum conditions for the adsorption of chromium (VI) by tanah napa adsorbent from Aripan, Solok. Tanah napa containing high silica and alumina are 63.20% and 16.55%, levels of silica and alumina in the tanah napa almost the same levels with natural zeolite, which can be used as adsorbent. In this research studied the influence of various parameters that affect the capacity of tanah napa uptake to Cr(VI), the pH of the solution, the initial concentration of solution, adsorbent particle size, heating temperature adsorbent and eluent flow rate. The results of this study indicate that the optimum pH is 4, the optimum initial concentration of 250 mg/L, while the particle size and adsorbent optimum heating temperature is 850 mm and 125°C, and the optimum flow rate is 20 drops/min. Using the Langmuir adsorption isotherm equation obtained maximum absorption capacity of the tanah napa to Cr(VI) that is equal to 0.911 mg/g.

Pemanfaatan Lumpur Limbah Cair Industri Crumb Rubber Sebagai Adsorben Ion Cr(VI) yang Diaktivasi dengan KOH Mardiati Mardiati; Salmariza Sy; Mawardi Mawardi
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Wastewater treatment with activated sludge method creates other waste in sludge form that becomes new problem for the crumb rubber industry. It is necessary to find a solution for their utilization. Research on utilization of sludge of crumb rubber industry as an adsorbent of ion Cr (VI), which is activated by KOH has been carried out with variations treatment of adsorbent from fresh sludge and from the sludge that carbonized and activated with KOH. The results revealed that the sludge contain high silica and alumina which is 49.02% and 16.498% respectively, that mean it can be used as an adsorbent. The optimum adsorbent pH of activated sludge was pH1 and pH2 for fresh sludge. The optimum contact time obtained at 120 minutes and the optimum concentration of Cr (VI) for each adsorbent was 70 mg / L. the maximum absorption capacity for Cr (VI) adsorption by Langmuir equation by activated sludge adsorbent is at 2.232 mg / g fresh sludge and adsorbent for 2,075 mg / g.

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Editorial Address Departemen Kimia, FMIPA, UNP Jalan Prof. Dr. Hamka, Air Tawar, Padang, Sumatera Barat

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Contact Name
Budhi Oktavia

Contact Email
budhioktavia@fmipa.unp.ac.id

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-

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