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INDONESIA
JURNAL ATOMIK
Published by Universitas Mulawarman
ISSN : 25490052     EISSN : 25490052     DOI : -
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science
Jurnal Atomik (JA) is published twice a year (March and August) by Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University. Jurnal Atomik is a media for graduate students of Department of Chemistry to publish their research articles in Chemistry field including Analytical Chemistry, Inorganic Chemistry, Physical Chemistry, Organic Chemistry, and Biochemistry. The research articles that be submitted to Jurnal Atomik have to be approved by Editorial Board and in accordance with the rules of writing approved by Editor of Jurnal Atomik.
Arjuna Subject : -
Articles 194 Documents
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PEMANFAATAN BONGGOL PISANG KEPOK (Musa paradisiaca. L) SEBAGAI BAHAN PEMBUATAN PLASTIK YANG MUDAH TERDEGRADASI DENGAN PENAMBAHAN PLASTICIZER GLISEROL. Pratiwi, Ricka Indria; Saleh, Chairul; -, Daniel
JURNAL ATOMIK Vol 1 No 2 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Telah dilakukan penelitian pembuatan plastik yang mudah terdegradasi menggunakan pati dari bonggol pisang kepok (Musa paradisiaca. L) dengan penambahan plasticizer gliserol. Metode yang digunakan adalah proses blending secara fisika. Hasil menunjukkan bahwa konsentrasi gliserol untuk menghasilkan plastik yang mudah terdegradasi paling baik adalah pada variasi volume gliserol 4 mL dengan nilai ketahanan air sebesar 62,23 % dan nilai degradabilitas sebesar 93,45 %.
UJI ANTIHYPERGLIKEMIK EKSTRAK ETANOL AKAR TEMBELEKAN (Lantana camara L.) TERHADAP KADAR GLUKOSA DARAH MENCIT JANTAN (Mus musculus) Sulistiani, Oktaviana Dewi; Kartika, Rudi; Sitorus, Saibun
JURNAL ATOMIK Vol 1 No 1 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Phytochemical screening from extract ethanol of tembelekan root has been carried out, its showed the presence of alkaloids, phenol, sapponin and flavonoids. Antihyperglikemik test from ethanol extract of tembelekan root had been done through experiment in laboratory, each doses 13,95, 27,90 and 55,80 mg/Kg BW was given orally at male mice to know the effect of antihyperglikemik toward the decrease of glukosa level in male mice's blood. The measurement at glucose level inside male mice's blood was done on 0th, 8th and 18th day by using glucometer and glucotest strip devices. giving the variation of doses etanol extract of tembelekan root, its showed at doses 55,80 mg/Kg BW could decrease the glucose level until 61,57%. From this research showed the result of  decrease of glucose level because the effect from ethanol extract of tembelekan root that distributed inside the blood.  Keywords : Tembelekan root, antihyperglikemic, blood glucose, mice, alloxan
ACTIVATION OF ZEOLITE WITH ULTRASONIC WAVE FOR ADSORPTION RECTIVE YELLOW 86 ON SAMARINDA WASTE WOVEN Ronaldy, Igo Marsat; Hindryawati, Noor; N. S, R. R. Dirgarini Julia
JURNAL ATOMIK Vol 2 No 2 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

The research about activation of natural zeolite with variation concentration HCl for adsorption reactive yellow 86 from waste liquid woven Samarinda has been conducted. The activation of zeolite was prepared with two way, by mechanicalstirring and ultrasonic assisted. From the X-Ray Diffraction (XRD) result showed that natural zeolite activated with ultrasonic (NZA-U) has 38 % composition of SiO2, while natural zeolite activated with mechanical stirring (NZA-MS) is 21 %. Surface area analysis using methylene blue shows for NZA-U is 25 m2/g and 24 m2/g for NZA-MS. The results on adsorption of reactive yellow 86 from waste liquid woven Samarinda using spectrophotometer visible on wavelength 417 nm shows the optimum condition adsorption on time contact60 minutes and concentration HCl 3 M, with percent of adsorption is 56.14 % for NZA-U and 53.93 % for NZA-MS
PEMBUATAN SURFAKTAN BERBAHAN DASAR MINYAK BIJI KETAPANG Terminalia catappa DENGAN TRIETANOLAMINA Ravensca, Irene; Saleh, Chairul; Daniel, Daniel
JURNAL ATOMIK Vol 2 No 2 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Research synthesis esteramin with cattapa seed oils (Terminalia cattapa) has been done through a transesterification reaction. The synthesis process was conducted on the extraction, esterification and transesterification. The results showed cattapa seed oil content of 51.9%, the acid value of 7.559 mg KOH / g and ALB levels of 3.4496%. The composition of the oil determined using GC-MS. GC-MS analysis of the composition of the most dominant oil is oleic acid amounted to 34.86%. Esterification process in the formation of methyl esters can be known ALB decreased to 0.7%. Methyl esters are reacted with triethanolamine through a transesterification reaction. The results showed esteramin water surface tension value of 34.947 dyne / cm, the HLB value of 5.25 is included in the water in oil emulsifiers scale and on a TLC plate there are two stains.
POTENSI TUMBUHAN CIPLUKAN (Physalis angulata Linn.) SEBAGAI ANTIOKSIDAN ALAMI Nuranda, Apri; Saleh, Chairul; Yusuf, Bohari
JURNAL ATOMIK Vol 1 No 1 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Potential of Ciplukan plant as natural antioxidants, the aim of this research is to determine the antioxidant potential of Ciplukan plant. First step is to know the active compound of the plant. Alkaloid and saponin are present at ciplukan leaves, stem and fruit, meanwhile steroid is present at leaves and stem. Moreover, flavonoid and triterpenoid is only present at stem and fruit, respectively. Phytochemical test are employed to dermine the active compound in the leaves, stem and fruit of ciplukan. Brine shimp lethality test are conducted to determine toxicity of the extract.The LC50 from the leaves extract is 962.054 ppm, stem extract is 753.558 ppm and at the fruit is 1.004,73 ppm. Antioxidant activity measurement conducted by reacting the sample with 1,1-difenil-2-pikrilhidrazil radical and measures the absorbance at wavelength 517 nm. Vitamin C is use as positive control. The inhibition concentration 50 vitamin C is 34.91 ppm. Meanwhile, the Inhibition concentration 50 of the leaves extract is 60.34 ppm, the stem extract is 56.36 ppm and the fruit extract is 63.46 ppm. These result indicated that Ciplukan plant is potensial as antioxidant source.Keywords: leaves, stems, fruit ciplukan (Physalis angulata.L), antioxidants,, DPPH and BSLT.
SINTESIS RESIN PENGKHELAT POLYSTYRENE DIVINYLBENZENE-DIMETILGLIOKSIMA DAN KEMAMPUAN ADSORPSI TERHADAP ION LOGAM Ni(II) Darwin, Chepy; Panggabean, Aman Sentosa; Alimuddin, Alimuddin
JURNAL ATOMIK Vol 2 No 1 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Penelitian tentang sintesis resin pengkhelat Polistiren divinilbenzena-dimetilglioksima dan kemampuan adsorpsi terhadap ion logam Ni(II) telah dilakukan. Penelitian ini bertujuan mensintesis resin PSDVB-dimetilglioksima. Sintesis resin pengkhelat Polistirene divinilbenzena-dimetilglioksima dilakukan melalui tiga tahap yaitu nitrasi, reduksi dan diazotasi. Pada tahap diazotasi terjadi reaksi kopling antara kation diazonium dengan nukleofil dari dimetilgliokisma yang dilakukan pada suhu 0-3ºC. Karakteristik dilakukan dengan menggunakan metode batch yaitu metode perendaman resin dalam larutan standar Ni(II) dalam waktu 24 jam. Hasil penelitian menunjukkan rendemen dari setiap tahapan sintesis adalah 60,7289%, 95,8940% dan 74,2254%. Resin pengkhelat hasil sintesis dikarakterisasi dengan spektrofotometer FT-IR yang menunjukkan perubahan bilangan gelombang 1350.17 cm-1 dan 1527.62 cm-1 yang merupakan pita serapan dari gugus N-O, bilangan gelombang 3448.72 cm-1 yang merupakan pita serapan dari gugus N-H dan bilangan gelombang 1627.92 cm-1 yang merupakan pita serapan dari gugus azo N=N. Karakteristik adsorpsi resin pengkhelat hasil sintesis terhadap ion logam Ni(II) menunjukkan persentase perolehan kembali mencapai 97,275%.
UJI AKTIVITAS ANTIHIPERGLIKEMIK EKSTRAK ETANOL DAUN TEMBELEKAN (Lantana camara L.) TERHADAP MENCIT PUTIH JANTAN TERINDUKSI ALOKSAN Eka Setia Rini; Rudi Kartika; Rahmat Gunawan
JURNAL ATOMIK Vol 1 No 2 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Phytochemical screening has been conducted on the ethanol extract of tembelekan leaves (Lantana camara Linn) which showed the presence of alkaloids, flavanoids, steroids, triterpenoids and phenolic. Testing antihyperglicemic activity of ethanol extract tembelekan leaves conducted experiments in the laboratory with each dose 14 mg/kg BW, 28 mg/kg BW and 56 mg/kg BW given orally in male mice induced by alloxan. Measurement of blood glucose levels done on day 0, 4, 8, 14 and 18 by using glucometer and glucose test strips. The decrease in blood glucose levels is 56,89 % with ethanol extract tembelekan leaves dose 56 mg/kg BW. The results showed that there is decrease in blood glucose because given ethanol extract tembelekan leaves.
PEMANFAATAN AIR ASAM TAMBANG BATUBARA SEBAGAI SUMBER ENERGI LISTRIK ALTERNATIF Fatimah Islamunisa; Bohari -; Aman Sentosa Panggabean
JURNAL ATOMIK Vol 3 No 1 (2018)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

The research about utilizing Acid Mine Drainage (AMD) as source of electrical energy has done. The variables of the observations made in the influence of electrode, number of cells and the working time of the cell. The results showed that the electrode, the number of cells and the working time of the cell affect the potential value of cells. The pair of electrodes of the metal cooper (Cu), Zinc (Zn), Carbon (C) have been varied showed the potential value of the most high by using a pair of electrodes C-Zn amounting to 1.68 V. More the number of cells that are used the higher the potential value that is produced, where the use of cells from 1 until 5 consecutive potential values of the cells produced are 1.57 V; 3.28 V; 4.90 V; 6.57 V; 8.20 V. The working time of the cell the longer it is used the more reduced the potential value of what is produced, where from 0 h, 3 h, 6 h, 9 h, 12 h and 15 h respectively the potential value of the cells produced are 1.63 V; 1.61 V; 1.59 V; 1.57 V; 1.56 V.
SCREENING BAKTERI PENGHASIL AMILASE DARI SEDIMEN SUMBER AIR PANAS DONDANG MUARA JAWA M Nur Yasin Fahrul Fhozi; Winni Astuti; Rahmat Gunawan
JURNAL ATOMIK Vol 2 No 2 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

The screening of amylase enzyme producing thermophilic bacteria from sediment of hot spring in Muara Jawa has been done. Screening has done by using selective media of starch, will show the formation of clear zones around the colonies by dripping the iodine solution. From alot colonies selected 1 colony with widest clear zone. Single colony obtained was identified as Bacillus sp. Amylase produced was tested for amylase activity by DNS method and obtained the amylase activity at pH 6 and temperature at 55°C is 2,8460 U/mL.
OPTIMASI KINERJA ANALITIK PADA PENENTUAN SURFAKTAN ANIONIK DALAM SAMPEL AIR ALAM MENGGUNAKAN METODE MBAS (Methyl Blue Active Subtance) Rani Novia Ulya; Bohari Yusuf; Aman Sentosa Panggabean
JURNAL ATOMIK Vol 1 No 1 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

 Penelitian tentang optimasi kinerja analitik pada penentuan surfaktan analitik pada penentuan surfaktan anionik dalam sampel air alam menggunakan metode MBAS (Methyl Blue Active Subtance) telah dilakukan. Penelitian ini bertujuan mengetahui titik optimum dari surfaktan anionik dengan menggunakan metode MBAS yang telah dioptimasi kinerja analitiknya. Dilakukan metode optimasi pada pengaruh Cloroform dan pH dimana surfaktan anionik bereaksi dengan warna biru metilen dan diukur dengan spektrofotometer UV-Vis dengan panjang gelombang 637 nm. Diperoleh volume Cloroform yang optimal adalah 10 mL dengan pH optimal adalah pH 4. Lalu dilakukan proses kinerja analitik, metode ini sangat baik untuk menganalisis surfaktan ditunjukkan dari pengukuran nilai batas deteksi sebesar 0,3394 ppm, dengan tingkat kebolehulangan yang diyatakan dengan nilai presentase koefisien variasi sebesar 2,33%. Metode ini dapat diaplikasikan untuk analisis surfaktan pada sampel air dari lingkungan dengan nilai perolehan kembali > 95%, menggunakan teknik spike menunjukkan bahwa matriks sampel yang berasal dari sungai Mahakam tidak mempengaruhi hasil pengukuran. Kata Kunci: Kinerja Analitik, Surfaktan, MBAS

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