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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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PENENTUAN KADAR AMONIA (NH3) PADA AIR SUNGAI MAHAKAM MENGGUNAKAN SPEKTROFOTOMETER DENGAN METODE FENAT Kusumastuti, Meidina; Sitorus, Saibun; Gunawan, Rahmat
JURNAL ATOMIK Vol 7 No 1 (2022)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Determination of Ammonia Levels (NH3) in Mahakam River Water at 5 points around the city of Samarinda has been carried out. The method used is to use a spectrophotometer by the phenate method. The results obtained at these five points are samples of Mahakam river water (Loa Janan Ilir), Mahakam river water (Samarinda Seberang), Mahakam river water (Sungai Kunjang), Mahakam river water (Samarinda Kota) and Mahakam river water (Sambutan) respectively with a concentration was 0.1043 mg/L; 0.1141 mg/L; 0.1303 mg/L; 0.0812 mg/L and 0.1214 mg/L. These results indicate that the highest ammonia concentration is in the Mahakam River (Sungai Kunjang), which is possible due to the high activity of ships. Keywords: Ammonia, phenate method and Mahakam River
PEMANFAATAN ARANG AKTIF DARI LIMBAH SERBUK GERGAJI KAYU BANGKIRAI (Shorea Laevifolia Eudert) SEBAGAI ADSORBEN ZAT WARNA RHODAMIN B Agustina, Linda; Sitorus, Saibun; Lianasari, Ika Yekti
JURNAL ATOMIK Vol 6 No 2 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Penelitian yang telah dilakukan mengenai pemanfaatan arang aktif dari limbah serbuk gergaji kayu bangkirai sebagai adsorben zat warna Rhodamin B. Arang aktif dikarakterisasi menggunakan Scanning Electron Microscopy (SEM). Didapatkan hasil karakterisasi SEM sebelum dikontakkan dengan Rhodamin B pada perbesaran 2.000 kali dan 5.000 kali bentuk morfologi permukaan seragam dan merata sedangkan sesudah dikontakkan dengan Rhodamin B pada perbesaran 2.000 kali dan 5.000 kali bentuk morfologi permukaan tidak seragam dan merata. Rhodamin B diadsorpsi oleh arang aktif dan diukur dengan menggunakan Spektrofotometer UV-Vis pada panjang gelombang maksimum 554 nm. Didapatkan hasil kondisi optimum pada proses adsorpsi Rhodamin B sebanyak 25 mL adalah pada massa adsorben 0,2 gram, konsentrasi Rhodamin B 3 ppm dan waktu adsorpsi 45 menit dengan % teradsorpsi sebesar 96,37%.
PHYTOCHEMICAL TEST AND STABILITY TEST OF PIGMENT OF KETAPANG LEAF (Terminalia catappa Linn.) Sulistiyawati, Rizki Ramadhani; Saleh, Chairul; Kartika, Rudi
JURNAL ATOMIK Vol 6 No 2 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Extraction of ketapang leaf (Terminalia catappa Linn) was carried out by maceration method using 96% ethanol. Phytochemical test results showed that the ketapang leaf extract contained tannin compounds. Stability test of ketapang leaf extract was carried out on the influence of temperature 40, 60 and 800C, the effect of pH (3, 4 and 5) and the effect of storage duration 1, 3 and 5 days using wavelength UV. The results of this study indicate that the ketapang leaf dye is stable at pH 3-4, stable decrease by heating at temperature 40-800C and stable at storage for 1-3 days.
PEMANFAATAN ARANG AKTIF SERBUK GERGAJI KAYU BANGKIRAI (Shorea lavefolia Endert) SEBAGAI ADSORBEN PELUMAS (OLI) BEKAS Youlanda, Desy; Sitorus, Saibun; Yusuf, Bohari
JURNAL ATOMIK Vol 7 No 1 (2022)
Publisher : Jurusan Kimia FMIPA UNMUL

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The use of bangkirai wood sawdust as adsorbent for used lubricant (oil) adsorption has been carried out. The purpose of this research is to find out how activated charcoal from bangkirai wood sawdust (Shorea Lavefolia Endert) can be used as a lubricating adsorbent (oil) seen from the testing and characterization of activated charcoal. The process of making bangkirai wood sawdust activated charcoal 0 is through a carbonization process at 500 C for 15 minutes and an activation process is carried out in activated charcoal by soaking using 25% H3PO4 solution for 24 hours. Determination of the quality of activated charcoal is carried out by testing the moisture content, ash content and iodine absorption capacity. The results obtained were the water content of activated charcoal H3PO4 25% which was 1,0590%, the ash content of activated charcoal H3PO4 25% was 0,0998% and the absorption capacity of activated charcoal H3PO4 activated charcoal 25% was 375,3253 mg/g. The optimum conditions for the adsorption of used lubricant (oil) were using activated charcoal adsorbent bangkirai wood sawdust, namely the mass of 1,5 grams and the contact time of 30 minutes. Keywords: Adsorption, Oil, Activated Charcoal, sawdust, bangkirai wood
RESPON VASODILATASI EKSTRAK METANOL DAUN Macaranga lamellata Whitmore SECARA IN VITRO Amalia, Elfiza; Astuti, Winni; Marliana, Eva
JURNAL ATOMIK Vol 6 No 2 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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The research about in vitro vasodilatation response of methanol extract of Macaranga lamellata whitmore leaves was carried out. This research was conducted to determine the vasodilatation response of methanol extract of Macaranga lamellata Whitmore leaves on changes in aortic tone of Wistar rat. The methods used include the in vitro methods by using separated aortic organ of Wistar rat. Methanol extract were given cumulatively in bath organs. Positive control is used methacholine and negative control is used DMSO solvent. T-test statistical was done to determine the significant differences between groups. Phytochemical test results showed that total methanol extract contained alkaloids, polyphenol, steroids, flavonoids and saponins. Percentage change in aortic tone by using methanol extract concentration of 0.3; 1 and 3 mg/mL respectively were -7.422%; -9.641% and -10.593%. Methanol extract of Macaranga lamellata Whitmore leaves have antihypertensive potential. Keywords: Antihypertensive, Aortic, In vitro, Macaranga lamellata Whitmore, Vasodilatation
UJI AKTIVITAS ANTIBAKTERI RIMPANG KUNYIT PUTIH (Kaempferia rotundaL.) TERHADAP Streptococcus sobrinus DAN Salmonella typhi -, Nurfadzillah; Marliana, Eva; Ruga, Ritbey
JURNAL ATOMIK Vol 6 No 2 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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An infectious disease caused by bacteria is a disease that often occurs in tropical areas. The used of plant extract is an interesting object of study to overcome these infectious diseases and because of an increase in bacterial resistance to antibiotics. White turmeric rhizome widely used by Indonesia society as an herb which has been used for the treatment of diarrhea and abdominal pain. This study aims to determine the content of secondary metabolities and inhibitory of white turmeric rhizome (Kaempferia rotunda L.) against Streptococcus sobrinus KCCM 11898 and Salmonella typhi ATCC 422 bacteria. The results of phytochemical screening white turmeric rhizome contained compound triterpenoids, steroids, phenolics, and saponins. An antibacterial activity test used agar diffusion method against Streptococcus sobrinus KCCM 11898 and Salmonella typhi ATCC 422 bacteria. Antibacterial activity white turmeric rhizome (Kaempferia rotunda L.) with concentration 1, 2, 4, 8% have an inhibition zone diameter against Streptococcus sobrinus KCCM 11898 bacteria is 10.33, 10.67, 17 and 25.17 mm respectively with the antibacterial strength is strong, meanwhile in Salmonella typhi ATCC 422 bacteria have an inhibition zone diameter was 8, 8.3, 11.83 and 13 mm respectively with the antibacterial strength is intermediate. Keywords: Antibacterial, White Turmeric Rhizome (Kaempferia rotunda L.), Agar Difussion
UJI FITOKIMIA DAN ANTIBAKTERI EKSTRAK METANOL DAUN MAHONI (Swietenia mahagoni (L.) Jacq) Sandra, Putri Ayu; Daniel, Daniel; Saleh, Chairul
JURNAL ATOMIK Vol 6 No 2 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Antibacterial activity test of methanol extract of Mahoni (Swietenia mahagoni (L) jacq) leaves was carried out. Extraction Mahogany leaf samples was carried out by maceretion method using methanol as a solvent. Antibacterial activity test was carried out using agar diffusion method, by spreading bacteria to agar media, then the extract was placed using disc paper. Phytochemical test result showed that the methanol extract of Mahoni leaf contained secondary metabolites of flavonoid, triterpenoid, steroid, saponin dan phenolic compounds. The antibacterial activity test result obtained Minimum Inhibitory Concentration (MIC) values for Streptococcus mutans bacteria were 0-0,625% and for Salmonella typhi bacteria 0-0,625%.
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.
AKTIVITAS ANTIBAKTERI EKSTRAK METANOL DAUN TANAMAN SAMBUNG URAT (Cayratia carnosa) TERHADAP Salmonella thypi and Propionibacterium acnes Inna, Mutma; Astuti, Winni; Saleh, Chairul
JURNAL ATOMIK Vol 7 No 1 (2022)
Publisher : Jurusan Kimia FMIPA UNMUL

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This research was conducted to the content of secondary metabolite of methanol extract of Cayratia carnosa leaf and activity toward Salmonella thypi and Propionibacterium acnes. The phytochemical test has tested by color testing and antibacterial activity carried out by agar diffution method. The secondary metabolites contained in the methanol extract from the Cayratia carnosa leaf are Flavonoids, Steroid and phenolic. Methanol extract from Cayratia carnosa leaf has a wide range of action. The value of Minimun Inhibitory Concentracion (MIC) for methanol extracts from the Cayratia carnosa leaf toward Salmonella thypi is between 6 to 8% and Propionibacterium acnes between 0.5 to 1%. Keywords: Cayratia carnosa (Link) Gagnepain, Phytochemical test, Antibacterial activity.

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