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All Journal VALENSI Jurnal Bahan Alam Terbarukan Jurnal Matematika & Sains SEMIRATA 2015 REKAYASA PROSIDING SEMINAR KIMIA REPOSITORY KIMIA KOVALEN: Jurnal Riset Kimia Jurnal Kimia Mulawarman ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry JURNAL ATOMIK Chemistry Indonesian Journal of Chemical Research Molekul: Jurnal Ilmiah Kimia JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Aman Sentosa Panggabean
Department Of Chemistry, FMIPA MUlawarman University-Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics

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BIOSORPSI LOGAM BERAT Cr(VI) MENGGUNAKAN BAKTERI Streptococcus mutans Rida Awliyani; Rudi Kartika; Aman Sentosa Panggabean
PROSIDING SEMINAR KIMIA Vol 1 No 2 (2023): Prosiding SNKT II 2022
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The research about the biosorpsion of hexavalent chromium heavy metal [Cr(VI)] with Streptococcus mutans bacteria has been carried out. Biosorption has been done by exposure of chromium to broth culture, the consentration and optimum time happened on the 4 day with the biosorption percentage of Cr(VI) by Streptococcus mutans bacteria was obtained at a concentration of Cr(VI) 5 ppm, with a percentage of 90.80%. It shows Streptococcus mutans has potential as biosorbent of Cr(VI). Keywords: Biosorption, Cr(VI), Streptococcus mutans
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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Abstract

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
DETERMINATION OF CONTAMINATION LEVELS OF HEAVY METALS LEAD (Pb) AND CADMIUM (Cd) IN FOOD SAMPLES BY CARBON ATOMIC ABSORPTION SPECTROPHOTOMETRY (GRAPHITE FURNACE ATOMIZER AAS/ GF-AAS) Oktavia, Dwina Putri; Panggabean, Aman Sentosa; Pasaribu, Subur P.; Widodo, Nanang Tri
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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Abstract

Research on the determination of lead (Pb) and cadmium (Cd) heavy metal contamination levels using the GFA-AAS method has been carried out in food samples. The aim of this study was to determine the levels of lead (Pb) and cadmium (Cd) metal contamination so that they do not exceed the threshold limit set according to the Food and Drug Supervisory Agency Regulation No. 9 of 2022. The research was carried out by destroying the sample using HNO3(p) and H2O2(p) into microwave. Additions were made of matrix modifiers (mixture of Mg(NO­3)2. 6H2O in 0,5% HNO3 and 1% NH4H2PO4 in 0,5% HNO3 (1:1)). Determination of heavy metal content in food was determined by the Carbon Furnace Atomic Absorption Spectrophotometry (GFA-AAS) method with a wavelength of 283.3 nm for lead (Pb) and 228.8 nm for cadmium (Cd). The results of measuring the levels of heavy metal lead (Pb) contamination in food samples were 0,016 mg/kg and 0,015 mg/kg for the heavy metal cadmium (Cd). Based on the Regulation of the Food and Drug Supervisory Agency No 9 of 2022 concerning Requirements for Heavy Metal Contamination in Processed Foods, the maximum limit for metal contamination of lead (Pb) and cadmium (Cd) in processed food is 0,30 mg/kg, where the results obtained do not exceed threshold, so that the sample is fit for consumption. Keywords: Lead, Cadmium, Carbon Furnace Atomic Absorption Spectrophotometry, Food.
ELEKTRODEKOLORISASI LIMBAH CAIR ZAT WARNA JINGGA DAN HIJAU DARI INDUSTRI SARUNG TENUN SAMARINDA MENGGUNAKAN ELEKTRODA PbO2/Pb Yulieta, Afifah Nur; Wirawan, Teguh; Panggabean, Aman Sentosa
PROSIDING SEMINAR KIMIA Vol 2 No 2 (2024): Prosiding SNKT III 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Electrodecolorization of liquid waste from Samarinda Seberang woven sarong industry using PbO2/Pb electrode was to reduce the dye content of Samarinda Seberang woven sarong waste by electrodecolorization method using lead (Pb) as cathode and lead dioxide (PbO2) as anode. Electrodecolorization of Direk orange and green dyes was carried out by varying the working potential, electrolyte concentration, time and dye concentration. The optimum condition of the Direk orange dye solution is using a working potential of 12 volts, 0.2 M Na2SO4 electrolyte concentration for 15 minutes and the Direk green dye solution is at a working potential of 10.5 volts, 0.2 M Na2SO4 electrolyte concentration for 15 minutes. The percentage of decolorization of the waste liquid sample of the Samarinda orange woven sarong industry using the PbO2/Pb electrode at the maximum condition is 99.58% and the percentage of decolorization of the waste liquid sample of the Samarinda green woven sarong industry using the PbO2/Pb electrode at the maximum condition is 98.46%. Keywords: Electrodecolorization, PbO2/Pb electrode, Na2SO4 electrolyte, Samarinda woven sarong industry waste.
SYNTHESIS AND SWELLING PROPERTIES OF CHITOSAN-BASED HYDROGELS CROSSLINKED FORMALDEHYDE AND TRIPOLYPHOSPHATE Ramadhani, Fadilah; Pasaribu, Subur P.; Panggabean, Aman Sentosa
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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Abstract

Hydrogel is a hydrophilic polymer network that can experience swelling with the ability to absorb and retain large amounts of liquid without decomposing and is widely applied in the fields of health, environment and agriculture. The swelling properties of hydrogels are influenced by the type of tissue and the density of crosslinks that form it. In this study the hydrogel was prepared by stirring a 2% chitosan solution (w/v) as much as 7 mL with 3 ml of formaldehyde-tripolyphosphate crosslinking mixture at variations of 3:0, 2:1, 1:1, 1:2 and 0:3 (v/v) at room temperature and swelling tests were carried out by immersing each hydrogel produced in aquades for a span of 24 hours at the same temperature. Based on the observations, the gel formation time was 420, 97, 84, 75 and 58 minutes respectively which showed the lower the chitosan concentration and the higher the tripolyphosphate, the faster the gel formation process. Then the degree of consecutive sweling was 581.43; 78,23; 75,17; 48.85 and 20.97% (w/w) indicate that covalent cross-networks formed by amine groups on chitosan with aldehyde groups on formaldehyde are more stable and more difficult to degrade than physical cross-networks formed by groups on chitosan and tripolyphosphates. Keywords: Hydrogel, Crosslinking, Chitosan-tripolyphosphate, Degree of swelling.
SYNTHESIS OF SILVER NANOPARTICLES USING CHEMICAL REDUCTOR: MINI REVIEW Az Zahra, Upi Fathimah; Panggabean, Aman Sentosa; Hindryawati, Noor
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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Abstract

Silver nanoparticles are particles whose range ranges from 1-100 nm. Formation of metal nanoparticles can be done by top down (physics) and bottom up (chemistry) methods. Chemical reduction is a very commonly used method because it is relatively simple, easy and effective to produce AgNPs. Synthesis of silver nanoparticles was carried out by forming a colloidal silver solution using the silver nitrate reduction method with a chemical reducing agent. Some chemical reducing agents that can be used are ascorbic acid, citric acid, hydrazine and NaBH4. In addition, a stabilizing agent is needed to prevent agglomeration of the formed nanoparticles. The purpose of this article review is to determine the characteristics of silver nanoparticles synthesized using chemical reducing agents based on UV-Vis, PSA, TEM and SEM spectrophotometer data. The method used is the method of literature review. The results show that the synthesis of silver nanoparticles by reducing silver nitrate with sodium borohydride and poly acrylic acid (PAA) stabilizer produces an average size of 71.8 nm silver particles, the PVP stabilizer produces an average size of 96.0 nm silver particles, synthesis of silver nanoparticles using reducing agents ethylene glycol and polyvinylpyrrolidone (PVP) produces an average size of silver particles of less than 10 nm, synthesis of silver nanoparticles using reducing agents hydrazine hydrate and polyvinyl alcohol produces an average size of silver particles of 10-60 nm. Keywords: silver nanoparticle, NaBH4, stabilizer
ELEKTRODELOKALISASI ZAT WARNA LIMBAH CAIR SARUNG TENUN SAMARINDA MENGGUNAKAN ELEKTRODA PbO2/Cu Menono, Fera Friskaneke; Wirawan, Teguh; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 9 No 1 (2024)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v9i1.1361

Abstract

Electrodecolorization of Sarung Tenun Samarinda liquid waste dyestuff using PbO2/Cu electrode has been conducted. This study aims to reduce the level of dyes in Sarung Tenun Samarinda liquid waste samples by electrodecolorization method using lead dioxide (PbO2) electrode as anode and Copper (Cu) as cathode. Electrodecolorization was carried out by varying the working potential, Na2SO4 electrolyte concentration, time, and dye concentration in order to obtain optimum conditions for dye decolorization by electrolysis process. The concentration of the dye was determined by calculating the absorbance data obtained from measurements using a UV-Vis spectrophotometer. The results showed that the optimum conditions of electrodecolorization on orange dyes using PbO2/Cu electrodes were a working potential of 10.5 volts, 0.2 M Na2SO4 electrolyte concentration and a time of 20 minutes. In green dyes, the optimum conditions are working potential of 10.5 volts, electrolyte concentration of Na2SO4 0.1 M and time for 15 minutes. The percentage of decolorization of the orange Sarung Tenun Samarinda liquid waste sample using the PbO2/Cu electrode was 100% and in the green Sarung Tenun Samarinda liquid waste sample was 100%.
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)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

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.
THE MANUFACTURING OF SILICA GEL FROM BAMBOO LEAF ASH (Dendrocalamus asper (Schult. f) Backer ex Heyne) AND THE APPLICATION FOR ADSORPTION Cd (II) ION -, Yasrin; -, Alimuddin; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 5 No 2 (2020)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

The research about silica gel manufacturing from bamboo leaf ash (Dendrocalamus asper (Schult.) Backer ex Heyne) and the application for Cd (II) ion adsorption has been done. The adsorption of Cd (II) ion done by some varieties, such as pH, concentration, and contact time. The result of the research showed the optimum pH was 8, the optimum concentration was 4 ppm and the contact time was 60 minutes. The adsorption capacity was 0.388 mg/g and the percentage of recovery was 93.44%.
Kinerja Analitik Mikrokapsul Magnetit - Alginat (MNPs-ALG) untuk Analisis Ion Logam Cu(II) dan Aplikasinya pada Sampel Alam: Analytical Performance of Magnetite - Alginate Microcapsules (MNPs-ALG) for Analysis of Cu(II) Metal Ions and Their Application in Samples Lianasari, Ika Yekti; Aman Sentosa Panggabean; Bohari Yusuf; Alimuddin; Koesnarpadi, Soerja
KOVALEN: Jurnal Riset Kimia Vol. 10 No. 1 (2024): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2024.v10.i1.16574

Abstract

Research has been carried out regarding the synthesis of Magnetite-Alginate microcapsules (MNPs-ALG) and applied to Cu (II) metal ions. The nature of magnetic nanoparticles, Fe3O4 which easily form aggregations can be overcome by this encapsulation process, but a very efficient separation process is also very much needed in the analytical separation process.The process of making magnetite nanoparticle compounds is carried out first using FeCl2.4H2O and FeCl3.6H2O and adding concentrated ammonia at a temperature of 90οC until the solution becomes blackish in color. The dry magnetite, Fe3O4, nanoparticles were then dissolved in distilled water and thickened with Na-Alginate then dropped slowly into a 1 M CaCl2 solution. The results of characterization using SEM showed that there were differences in morphology before and after contact, and there was 0.98% mass of Cu elements on the EDS results.The microcapsule adsorption optimization test gave results for the best adsorption percentage >90% on a mass variation of magnetite (MNPs) of 0.3 grams; pH 5; contact time of 30 minutes and retention capacity of 185.95 mg/gram, at a Cu(II) concentration of 800 ppm. Analytical performance shows the best results with linearity parameters with a correlation coefficient of 0.999; the detection limit and quantitation limit are 0.0516 ppb and 0.1720 ppb with a lifetime of four times. The application of samples in the form of river water samples shows a percent recovery value of around >90%, indicating that there is no matrix that significantly influences the measurements.
Co-Authors -, Yasrin Adha, Laila Sufina Adhi Surya Pranata Surya Pranata Adhi Surya Pranata Surya Pranata, Adhi Surya Pranata Surya Adhitya Rinaldi Akhmad Rifani Akkas, Erwin Ali Murtopo Alimuddin Alimuddin - Alimuddin Alimuddin Alimuddin Alimuddin Alimuddin Alimuddin Alimuddin Alimuddin Alya Yuni Maulana Amrina Rosyada Anggun Ridha Avitri Ani Trisnawati Anwar, Adliah Arif, Moh. Syaiful Arifin Syam Surya arifin syam syam Az Zahra, Upi Fathimah Bagus Muliawan Bayu Iskandar Bohari - Bohari Bohari Bohari Bohari Bohari Yusuf Bohari Yusuf Buchari Buchari Buchari Buchari Budiono, May Cahaya, Tentriati Chairul Saleh Darmin - Darwin, Chepy Dirgarini Julia Nurlianta Subagyono Eka Apriska S Kusuma Erwin - Erwin Erwin Erwin Erwin Erwin Erwin Erwin Erwin Erzha, Nutfahryza Fadilah Ramadhani Farida Kristiana Farlianti, Resma Lita Fatimah Islamunisa Filus, Tio Fitriana, Mila Friscylia Friscylia Gaanty Pragas Maniam, Gaanty Pragas Hariati, Hariati Hariati, Hariati Harum Widyastuti Hening Ayu Marinda Hutagalung, Sandi Christopher Idris Mandang, Idris Irviansyah, Alfian Iskandar, Bayu Joni Rahman Josephine Josephine, Josephine Juntia Kirana Pratiwi Khasanah, Manja’a Kumalasari, Anisa Kurniasih, Ririn Feby Kusmiaty, Prilianda Leonardus Lewo Hayon Lianasari, Ika Yekti Lossi Hotmaida Simanjuntak Lumban Gaol Veronica Destiana M. Bachri Amran Manja’a Khasanah Margaretta D. R. N. S Marvin Horale Pasaribu May Budiono Mayang, Julia Agustin Menono, Fera Friskaneke Mila Fitriana Muhammad Asfian Nur Muhammad Bachri Amran Muhammad Rizky Muhammad Robiansyah Nanang Tri Widodo Nanang Tri Widodo Nauval Dwi Fadillah Nazaratun Thaiyibah Noor Hindryawati Noor Hindryawati, Noor Nur, Nana Septiana Nurhasanah Nurhasanah Oktavia, Dwina Putri Oktaviani, Reka pakasi, Resy Prayuda, Adif Putri, Amelia Putri, Rinda Anisyah RAHMAT GUNAWAN Rahmat Gunawan Rani Novia Ulya Rida Awliyani Rientha Septiana Rika anggraini Rina Rina Ristia Asri Fidayana Rita Hairani Rudi Kartika, Rudi Rumengan, Nur Khamillah Sadijah Achmad Saepudin Suwarsa Saibun Sitorus Saibun Sitorus Sandi Christopher Hutagalung Sari, Ermalia Lintang Sari, Ika Yekti Liana Sari, Rahma Juwita Septiana, Rientha Shintia Alifah R Soerja Koesnarpadi Soerja Koesnarpadi Subagyono, Dirgarini Julia Nurlianti Subur P Pasaribu Teguh Wirawan Teguh Wirawan, Teguh Tika Widyastuti Tio Filus Trisnawati, Ani Victoria, Stefanie Willem Hendrik G Wirdhaningsih Wirdhaningsih Yasser Arafat Yulianti Kartika Yulieta, Afifah Nur Yusuf, Irfan Maulana