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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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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)
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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
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)
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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)
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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)
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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)
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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%.
ADSORPSI SENYAWA ASAM BENZOAT MENGGUNAKAN KARBON AKTIF BATANG PISANG (Musa Paradisiaca. L) Iswara, Muhammad Wahyugo; Sitorus, Saibun; Gunawan, Rahmat
JURNAL ATOMIK Vol 7 No 1 (2022)
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Research on the adsorption of benzoic acid compounds using activated carbon of banana stems (Musa paradisiaca L) has been carried out. The method used is adsorption with activated adsorbent modification. SEM morphological results on banana stems showed differences before and after activation. From the research results obtained the optimum adsorption concentration of activated carbon of banana stems at adsorbent weight of 0.6 grams, xylene concentration of 40 ppm and adsorption capacity of 1.165 mg/g. Optimum time of activated carbon of banana stem was 0.4 gram, adsorption time was 45 minutes and adsorption capacity was 1.772 mg/g.
PEMBUATAN ETANOL DARI UMBI TALAS (Colocasia esculenta [L] Schott) DENGAN PENAMBAHAN GELATIN SEBAGAI SUMBER NITROGEN Saccharomyces Cerevisiae Abimanyu, Priem Reyhan; Kartika, Rudi; Sitorus, Saibun
JURNAL ATOMIK Vol 4 No 2 (2019)
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Ethanol have made from taro’s flour with an addition of gelatin as nutrition source for Saccharomyces cereviciae. Ethanol are made within process hydrolysis, fermentation, distillation and Gas Chromatography analysis. Starch hydrolysis process are enzymatic through liquification and saccharification process with an addition of alpha-amylase and gluco-amylase which conversed starch into glucose. Fermentation process are used time variation within 5, 6, 7 and 8 days and gelatin as nutrition source are used in concentration to 0,5 %, 1 % and 1,5 % (v/v). The highest ethanol concentration are obtained in addition of 1 % gelatin with 7 days of fermentation which are 41,648 %.
ADSORPSI ZAT WARNA TEKSTIL UNGU DARI AIR LIMBAH INDUSTRI RUMAH TANGGA SARUNG TENUN SAMARINDA SEBERANG DENGAN MENGGUNAKAN SERBUK KULIT BUAH LAI (DURIO KUTEJENSIS (HASSK.) BECC.) Oliviani, Nadira; Wirawan, Teguh; Sitorus, Saibun
JURNAL ATOMIK Vol 8 No 2 (2023)
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Pewarna tekstil termasuk senyawa yang sulit terurai secara alami, sehingga dapat berdampak negatif terhadap lingkungan perairan. Penelitian ini bertujuan untuk memanfaatkan kulit buah lai yang dibuat menjadi serbuk sebagai adsorben untuk menyerap zat warna tekstil ungu pada air limbah sarung tenun Samarinda Seberang. Tahap pertama dibuat dengan membilas bubuk kulit buah lai dengan air suling mendidih, kemudian dipanggang dan diayak dengan ayakan 60 mesh. Karakterisasi dilakukan dengan menggunakan Fourier Transform Infared (FTIR) dan Scanning Electron Microscopy (SEM). Kajian adsorpsi zat warna tekstil ungu oleh serbuk kulit buah lai dilakukan dengan variasi waktu, pH dan konsentrasi. Hasil karakterisasi dengan FTIR menunjukkan adanya CO, CH bending, C=C, C=O, CC alkena,Gugus CH dan berdasarkan hasil karakterisasi SEM serbuk cangkang lainnya memiliki permukaan yang berpori. Kondisi optimum adsorpsi zat warna tekstil ungu 100 ppm untuk 25 mL dengan berat adsorben 0,01 g terjadi pada waktu kontak 2,5 menit dan pH 9. Adsorpsi zat warna tekstil ungu mengikuti pola adsorpsi isoterm Langmuir dan memiliki kapasitas adsorpsi maksimum sebesar 1176 .0486 mg/g. Aplikasi pada sampel air limbah sarung tenun ungu Samarinda Seberang dengan konsentrasi 143,5 ppm sebanyak 25 mL dan menggunakan berat optimum 0,01 g, waktu 2,5 menit dan pH 9 diperoleh %Adsorpsi sebesar 72,0119%. 5 menit dan pH 9. Adsorpsi zat warna tekstil ungu mengikuti pola adsorpsi isoterm Langmuir dan memiliki kapasitas adsorpsi maksimum sebesar 1176 .0486 mg/g.Aplikasi pada sampel air limbah sarung tenun ungu Samarinda Seberang dengan konsentrasi 143,5 ppm sebanyak 25 mL dan menggunakan berat optimum 0,01 g, waktu 2,5 menit dan pH 9 diperoleh %Adsorpsi sebesar 72,0119%. 5 menit dan pH 9. Adsorpsi zat warna tekstil ungu mengikuti pola adsorpsi isoterm Langmuir dan memiliki kapasitas adsorpsi maksimum sebesar 1176 .0486 mg/g. Aplikasi pada sampel air limbah sarung tenun ungu Samarinda Seberang dengan konsentrasi 143,5 ppm sebanyak 25 mL dan menggunakan berat optimum 0,01 g, waktu 2,5 menit dan pH 9 diperoleh %Adsorpsi sebesar 72,0119%.
VERIFIKASI PARAMETER PENGUJIAN SURFAKTAN ANIONIK DALAM AIR LIMBAH DENGAN METODE MBAS MENGGUNAKAN SPEKTROFOTOMETER UV-VIS Victoria, Stefanie; Sitorus, Saibun; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 7 No 2 (2022)
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Determination of the parameters verification of anionic surfactants in waste water samples based on the MBAS (Methylene Blue Active Substances) method using a UV-Vis spectrophotometer has been done. Verification of the measurement parameters refer to SNI 06-6989.51- 2005. The measurement results of several verification parameters is good showed that the linearity of the measurement indicated by the correlation coefficient value of 0.9909. The detection limit and quantitation limit values ​​obtained were 0.3622 mg/L and 1.2072 mg/L respectively. The precision value with %RSD was 2.5415%, and the %RPD value was 3.0686%. It is stated that this method can be used for the analysis of anionik surfactants in laundry wastewater and can be applied as a routine test at PT. Global Environment Laboratory.
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