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All Journal Jurnal Ilmu Dasar PROSIDING SEMINAR KIMIA KOVALEN: Jurnal Riset Kimia Jurnal Kimia Mulawarman Science and Technology Indonesia JURNAL ATOMIK Chemistry Indonesian Journal of Chemical Research Dinamika Lingkungan Indonesia Ilmu Perikanan Tropis Nusantara ANDIL Mulawarman Journal of Community Engagement
Saibun Sitorus
Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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ISOLASI DAN IDENTIFIKASI SENYAWA STEROID DARI KULIT BATANG TUMBUHAN ANDONG (Cordyline fructicosa [L] A. Cheval) Annisa Aisya; Ritson Purba; Saibun Sitorus
JURNAL KIMIA MULAWARMAN Vol 9 No 2 (2012)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The isolation of steroid compounds from the bark of Andong plant (Cordyline fructicosa [L] A. Cheval) that come from Samarinda have been done. Their air-dried powdered from bark of Andong plant (Cordyline fructicosa [L] A. Cheval) (250 gram) were extracted by methanol at room temperature (27oC) and fractioned with n-hexane-water (1:1). Separation of steroid compounds in n-hexane fraction by column chromatography with silica gel 60 (35-70 mesh) based on the Isocratic method and produce six fractions, that fractions were 1, 2, 3, 4, 5 and 6 fractions. Fraction 3 gave a blue fluorescent staining that was observed after under UV light and with the Lieberman Burchard produces a green stain, then the fraction 3 was tested for steroid and produces a blue color indicates a positive steroid that has a yield of 0.0536 gram. Purification of the fraction 3 produces greenish-yellow crystals with Rf value of 0.72 with eluent chloroform (100%) while the value of Rf in n-hexane = 0.68 and Rf in ethyl acetate = 0.42. the UV-Vis spectrum of the crystalline isolate results provide absorption at wavelenght of 252 nm, 263 nm and 334 nm. While the result of FT-IR spectrum gives absorption at wave numbers: 689.63; 768.03; 800.79; 901.81; 977.32; 1052.32; 1201.45; 1273.35; 1358.76; 1463.11; 1662.32; 2853.02; 2926.19; 3056.42 and 3456.33. The bark of Andong plant (Cordyline fructicosa [L] A. Cheval) contains steroid compounds.Keywords: Andong (Cordyline fructicosa [L] A. Cheval), Steroid, Isocratic, Isolation
STUDI BIOAKUMULASI ION LOGAM Pb DALAM RAMBUT DAN DARAH OPERATOR STASIUN PENGISIAN BAHAN BAKAR UMUM, JALAN SENTOSA, SAMARINDA Sukma Wiratama; Saibun Sitorus; Rudi Kartika
JURNAL ATOMIK Vol 3 No 1 (2018)
Publisher : Jurusan Kimia FMIPA UNMUL

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A study about Bioaccumulation of Pb Metal Ion in Hair and Blood of Operator of General Fuel Filling Station, Sentosa Road Samarinda has been conducted. The aim of the study is to determine the accumulation of Pb metal ions levels and the association between the hours of work of gas station operator assumed to be positively correlated and the levels of Pb metal ions in hair as well as in blood. Hair and blood were homogenized and analyzed by Atomic Adsorption Spectrophotometer (AAS). The results displayed that the lowest and highest level of Pb metal ions contained in hair was 0.03 μg/g and 0.07 μg/g, respectively. The highest number found in blood was similar to the level contained in hair, that is 0.07 μg/mL. However, the lowest level was marginally lower with a number 0.01 μg/mL. The coefficient correlation (r) obtained were 0.822 and 0.859 for hair and blood, respectively. These numbers indicate there was a strong positive relationship between working hours of gas station operator and levels of Pb metal ion in hair and blood. This inference was also supported by the results of t test, that is, 0.564. Furthermore,% determinants analysis was also undertaken which result in 82.2% and 85.9% for hair and blood, respectively to strengthen the test result that working hours of gas station operator in Sentosa Road Samarinda was positively associated with Pb metal ion levels in hair and in blood.
KARAKTERISTIK CAMPURAN BATUBARA DAN VARIASI ARANG SERBUK GERGAJI DENGAN PENAMBAHAN ARANG TEMPURUNG KELAPA DALAM PEMBUATAN BRIKET Siti Hosniah; Saibun Sitorus; Alimuddin -
JURNAL ATOMIK Vol 1 No 1 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

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Penelitian ini bertujuan untuk mempelajari sifat-sifat briket dari campuran antara batubara dengan arang kayu Ulin, Bangkirai dan tempurung kelapa, yaitu dalam rangka mencari sumber energi alternatif. Pembuatan briket melalui tahapan pengarangan, penghalusan arang, pengayakan 60 mesh, pencampuran dengan perekat, pencetakan, pengeringan dengan oven (60°C, ±24 jam) dan pengujian. Perlakuan dalam penelitian ini yaitu variasi komposisi campuran antara batubara dengan arang kayu Ulin, kayu Bangkirai dan tempurung kelapa sebanyak 21 perlakuan.Hasil penelitian menunjukkan, briket dengan komposisi batubara sebanyak 25% dan arang tempurung kelapa sebanyak 75%, serta komposisi batubara sebanyak 25% dengan campuran arang tempurung kelapa, kayu Ulin, dan kayu Bangkirai sebanyak 75% memiliki kualitas yang sesuai dengan kualitas briket standar nasional Indonesia (SNI). Briket dengan komposisi batubara sebanyak 25% dan arang tempurung kelapa sebanyak 75% memiliki kualitas sebagai berikut: nilai kalor 6605 kal/g, nilai kadar karbon terikat 78,26%, nilai zat mudah menguap 19,35%, kadar abu 2,40%, nilai keteguhan tekan 28,55 kg/cm2, kerapatan 0,73 gr/cm3, dan kadar air 8,74%. Sedangkan briket dengan komposisi batubara sebanyak 25% dan campuran arang tempurung kelapa, kayu Ulin, kayu Bangkirai sebanyak 75% memiliki kualitas sebagai berikut: nilai kalor 6396 kal/g, nilai kadar karbon terikat 77,47%, nilai zat mudah menguap 19,66%, kadar abu 2,87%, nilai keteguhan tekan 26,41 kg/cm2, kerapatan 0,70 gr/cm3, dan kadar air 7,87%. Kata Kunci : briket, batubara, kayu Ulin, kayu Bangkirai, tempurung kelapa
Analisis kadar logam Pb, Cd, Cu, As pada air, sedimen dan bivalvia di Pesisir Teluk Balikpapan Saibun Sitorus; Yerwanto Ilang; Rudy Agung Nugroho
Dinamika Lingkungan Indonesia Vol 7, No 2 (2020)
Publisher : Universitas Riau

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Abstract

Analysis of Heavy Metal Content of Pb, Cd, Cu, As in Water, Sediments and Bivalves in Coastal Waters of Balikpapan Bay. The study aims to analyze the levels of heavy metals (Pb, Cd, Cu, As) in water, sediment and Bivalvia and to determine the adsorption, bioconcentration factors in sediments and Bivalvia. This research is in the form of field survey and laboratory analysis, where the results are quantitative descriptive and analyzed statistically multivariate.The results of laboratory analysis showed that the levels of heavy metals in water ranged between (Pb 0.064-0.142 mg/L), (Cd 0.088-0.112 mg/L), (Cu 0.035-0.056 mg/L) and (As 0.022-0.026 mg/L). Sediment (Pb 2,555-2,616 mg/Kg), (Cd 2,433-2,609 mg/Kg), (Cu 1,289-1,553 mg/Kg), (As 0,329-0,496 mg/Kg) and Bivalvia (Pb 1,708-2,076 mg/Kg) ), (Cd 1.569-2.416 mg/Kg), (Cu 1.078-1.264 mg/Kg) and (As 0.297-0.449 mg/Kg). Heavy metal content of Pb, Cd, Cu and As in the sediment is greater than water or Bivalvia. The results of the statistical analysis partially showed that the levels of heavy metals Pb, Cd, Cu and As differed significantly between all study samples (water, sediment and Bivalvia). Whereas the observation stations (Kariangau industrial area, the village on the water and the PT. Pertamina area) did not differ significantly. The results of the analysis of adsorption and bioconcentration factors on the levels of heavy metals Pb, Cd, Cu and As in sediments (Pb 17.99-42.25), (Cd 22.75-28.67), (Cu 26.49-36.83 ) and (As 13.71-19.08). In Bivalvia (Pb 14.15-32.44), (Cd 14.00-26.55), (Cu 21.14-34.43) and As (13.50-29.88).
IDENTIFICATION OF PARACETAMOL AND COFFEINE IN TRADITIONAL MEDICINE BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY USING PHOTO DIODE ARRAY DETECTORS Putri, Amelia; Sitorus, Saibun; Panggabean, Aman Sentosa; Sari, Ika Yekti Liana
PROSIDING SEMINAR KIMIA Vol 2 No 1 (2023): Prosiding SNK 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Traditional medicine is a supplement that can help maintain a healthy body which is produced from ingredients or ingredients derived from plants, so that it is still in great demand by the public because it is considered safe. Traditional medicinal preparations themselves are not allowed to contain Medicinal Chemicals (BKO). However, along with the increasing public interest, this has led to the circulation of traditional medicines containing BKO in order to obtain products with the fastest/ most effective effects. One of the chemical drugs that are often found are coffeine and paracetamol. This study aims to identify the medicinal chemicals of coffeine and paracetamol in traditional medicine using a solid phase extraction method which is then followed by high performance liquid chromatography with a photo diode array detector. The results obtained were that the coffeine standard produced a retention time of 5.791 with a wavelength of 206 nm and 272 nm while the paracetamol standard produced a retention time of 4.372 with a wavelength of 196 nm and 246 nm. The results of the analysis showed that the samples in the form of traditional medicines did not contain the medicinal chemicals coffeine and paracetamol Keywords: Coffeina, Paracetamol, Medicinal Chemicals, Traditional Medicine
REVIEW ARTICLE: UTILIZATION OF VARIOUS OF ADSORBENT FROM ACTIVATED CHARCOAL IN INCREASING THE QUALITY OF COOKING OIL Hasriani, Hasriani; Sitorus, Saibun; Hiyahara, Irfan Ashari
PROSIDING SEMINAR KIMIA Vol 2 No 1 (2023): Prosiding SNK 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Cooking oil is a type of vegetable oil derived from palm plants that has gone through various refining processes. Generally, cooking oil is used repeatedly at high temperatures until the oil is unfit for consumption This results in a decrease in the quality and nutritional value of fried food. In addition, the accumulation of used cooking oil (used cooking oil) can cause environmental pollution. Improving the quality and nutritional value of cooking oil can be done by using the adsorption method. The adsorption method is a method that is carried out by using a number of adsorbents from activated charcoal in the process of refining used cooking oil. Adsorbents from activated charcoal can be made from basic ingredients of agricultural waste such as activated charcoal from coconut shells, corn cobs, snack fruit and others. The adsorbent of activated charcoal can reduce the levels of fatty acids, water content, peroxide levels and acid numbers. The internal adsorption capacity depends on the different adsorbent types, contact time, amount of adsorbent, surface area and structure of the adsorbent and adsorbate concentration. Keywords: Adsorbent, Activated Charcoal, Adsorption Capacity, Used Cooking Oil
EFFECT OF TIME VARIATION ON XYLENE USING ACTIVE CARBON FROM WASTE OF BANANA STEM (Musa paradisiaca L) Ashari, Ayu Wanti; -, Alimuddin; Sitorus, Saibun
JURNAL ATOMIK Vol 5 No 2 (2020)
Publisher : Jurusan Kimia FMIPA UNMUL

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Test of activated carbon adsorption ability of banana stem waste (Musa paradisiaca L) on xylene has been carried out. In the characterization of activated carbon Scanning Electron Microscopy (SEM) was used to show the morphological differences in activated carbon after activation and before activation while xylene adsorption using a UV spectrophotometer with variations in the time of adsorption. The optimum xylene adsorption time was obtained on the weight of 0.4 gram adsorbent, the concentration of xylene 40 ppm was 45 minutes, the adsorption capacity was 1.772 mg/g.
PEMANFAATAN LARUTAN NATRIUM KLORIDA (NaCl) UNTUK MENURUNKANKADARSIANIDAPADA REBUNG BAMBU KUNNG (Bambusa vulgaris Schrad. Ex J.C) SECARASPEKTROFOTOMETRI UV-VIS Oman, Aries; Sitorus, Saibun; Saleh, Chairul
JURNAL ATOMIK Vol 7 No 1 (2022)
Publisher : Jurusan Kimia FMIPA UNMUL

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Penelitian tentang pemanfaatan larutan natrium klorida (NaCl) untuk menurunkan kadar sianida pada rebung bambu kuning (Bambusa vulgaris Schrad. Ex J.C) secara spektrofotometri UV-Vis telah dilakukan. Penelitian kali ini berfokus pada penggunaan variasi konsentrasi dan lama perendaman larutan NaCl untuk menurunkan kadar sianida pada rebung bambu kuning. Hasil penentuan kadar sianida awal sampel rebung bambu kuning (Bambusa vulgaris) sebesar 1,1051 ppm. Konsentrasi larutan NaCl yang efektif untuk menurunkan kadar sianida pada rebung bambu kuning (Bambusa vulgaris) yaitu NaCl 5% dimana kadar sianida yang diperoleh sebesar 0,3949 ppm dengan persentase penurunan sebesar 64,3% lalu lama perendaman yang efektif menggunakan larutan NaCl 5% untuk menurunkan kadar sianida pada rebung bambu kuning (Bambusa vulgaris) yaitu selama 3 Jam dimana kadar sianida yang diperoleh sebesar 0 ppm dengan persentase penurunan sebesar 100%.
Pemanfaatan Arang Aktif Batang Pisang (Musa Paradisiaca L) Sebagai Pengadsorpsi Toluen Ardi, Ardi; Sitorus, Saibun; Alimuddin, Alimuddin
JURNAL ATOMIK Vol 6 No 2 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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ABSTRACT Test of activated carbon adsorption ability of banana stem waste (Musa paradisiaca L) on toluen has been carried out. Scanning Electron Microscopy (SEM) was used to characterize activated carbon to show the morphological differences in activated carbon after activation and before toluen adsorption using a UV spectrophotometer with variations in the time of adsorption and concentration. The optimum toluen adsorption time obtained on the adsorbent weight of 0.4 gram, the concentration of toluene 40 ppm was 45 minutes, then the absorbed toluene concentration was 61,75%. the adsorption capacity was 1,5438 mg/L and the optimum toluene concentration at 1 grams, 60 minutes adsorption time was 40 ppm. The concentration of toluene absorbed was 73,875%. Then the adsorption capacity was 0.07388 mg/L.
THE UTILIZATION OF WANYI SEEDS (Mangifera caesia Jack.) IN MAKING ETHANOL BY ENZYMATIC HYDROLYSIS AND FERMENTATION USING Saccharomyces cerevisiae Arissah, Nur; Sitorus, Saibun; Gunawan, Rahmat
JURNAL ATOMIK Vol 5 No 2 (2020)
Publisher : Jurusan Kimia FMIPA UNMUL

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The utilization of wanyi seeds (Mangifera caesia Jack.) in making ethanol by enzymatic hydrolysis and fermentation using Saccharomyces cerevisiae has been carried out. The method used is the hydrolysis of α-amylase and gluco-amylase enzymes, fermentation with time variation and yeast concentration as well as the addition of 0.5% urea nutrition and 0.06% NPK, distillation and gas chromatography. Ethanol content 98.508% at 6 days fermentation with yeast concentration 0.23%.
Co-Authors Abimanyu, Priem Reyhan Adelia Salma Adeliawati Adnyana, Ketut Cahyadi agita rachmala ginting Agustinus Pata Agustinus Pata, Agustinus Akbarul Fauzan Albar Alhabib, Albar Alimuddin - Alimuddin - Aman Sentosa Panggabean Annisa Aisya Ardi Ardi Arif Ari Wibowo Arissah, Nur Ashari, Ayu Wanti Azzahro, Raisha Binsar Simangunsong Binsar Simangunsong, Binsar Bobby Charles Setiawan Boby Royan alfadlil Boby Royan alfadlil, Boby Royan Bohari Yusuf Cahyani, Amelya Putri Chairul Saleh Dani Safrian Kusuma Daniel Daniel Daniel Daniel Tarigan Dedy Prasetyo Deni Karisnawati Dewi Eka Yuliani Djihan Ryn Pratiwi, Djihan Ryn Erwin Erzha, Nutfahryza Eva Marliana, Eva Evi Mashunah Fadillah, Fahmi Fahmi, Ismi Firmansyah - Hairani, Rita Hamdhani, Hamdhani Hammamiyah, Ulinnuha Haspian Nanda Trimeido Hasriani Hasriani, Hasriani Henny Pagoray, Henny Hiyahara, Irfan Ashari Idris Mandang, Idris Indra Masmur Irviansyah, Alfian Iswara, Muhammad Wahyugo Juwita, Retno Khairul Zhafirin Bayu Al-Hazmi Kurniawan, Burhan Kusumastuti, Meidina Lambang Subagiyo Laupa, Siti Aisyah Lianasari, Ika Yekti Linda Agustina M, Eka Riskhi Magdaleni, Agustina Rahayu Margarita, Margarita Masmur, Hestina Muhamad Yulianto Nanang Tri Widodo Novianti, Rina Lia Nur Anisa Rahmawati Nurbah, Sahriana Putri Oliviani, Nadira Oman, Aries Pangaribuan, Fransiscus X. Rico Putri, Amelia Rahmadi, Mohammad Zulfian Rahmat Gunawan RAHMAT GUNAWAN Rifqi Favian Jiwani Rio Trisdiantoro Ritson Purba Ritson Purba, Ritson Riyanto, Rahmat Fajar Rudi Kartika, Rudi Rudy Agung Nugroho Ruga, Ritbey S. R, Firdaus Salsabilla Nur Anisa Samsul Rizal Sari, Ika Yekti Liana Sari, Prinka Susmita Sari, Riska Alif Kartika Sarwawan, Ade Putri Hawiyah Sihombing, Eka Putri Jayanthy Sihotang, Recha Defrosa Morasih Samta Siti Hosniah Subur P Pasaribu Sukma Wiratama Sulistiani, Oktaviana Dewi Teguh Wirawan Teguh Wirawan, Teguh Victoria, Stefanie Wahyudin, Muhamad Winni Astuti Winni Astuti, Winni Wiranata, Muhammad Harjan Yerwanto Ilang Yogie Henry Payung Yogie Henry Payung, Yogie Henry Youlanda, Desy