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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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validasi Rika anggraini; Rita Hairani; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 16 No 1 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v16i1.667

Abstract

The research about validation of the method of Hg determination on the sample from wastewater treatment plant (WWTP) PT. Badak NGL Bontang, Kalimantan Timur using cold vapour-atomic absorption spectrophotometer (CV-AAS) techniques has been conducted. To obtain a valid measurement result, determinations of the important several parameters that influence the method validation are used. The results of research showed that 20% SnCl2 solution could be used as a reducing agent. The analytic performance of measurement obtain is good, showed with the linearity (r) value ≥ 0.995, LOD was 0.2530 ppb, LOQ was 0.8432 ppb, MDL was 0.6427 ppb and repeatability and reproducibility are shown as % RSD < 2/3 CV Horwitz values. The accuracy of this method is very good with a percentage of recovery value of 114.88%. Based on the results of this research, CV-AAS method can be used in the determination of Hg in WWTP samples with the valid results.
PEMBUATAN DAN KARAKTERISASI MEMBRAN SELULOSA ASETAT-PVC DARI ECENG GONDOK (Eichhornia crassipes) UNTUK ADSORPSI LOGAM TEMBAGA (II) Nazaratun Thaiyibah; Alimuddin Alimuddin; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 14 No 1 (2016)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Penelitian tentang isolasi selulosa dari eceng gondok (Eichhornia crassipes) melalui proses ekstraksi sokletasi, delignifikasi dan bleaching, dilanjutkan dengan sintesis asetilasi dengan memasukkan gugus asetat ke dalam gugus fungsi selulosa hasil isolasi telah dilakukan. Membran selulosa asetat-PVC dibuat dengan mencampurkan selulosa asetat dengan polivinilklorida (PVC) sebagai matriks yang terlebih dahulu dilarutkan dengan pelarut tetrahidrofuran (THF), kemudian ditambahkan dioktilftalat (DOP) sebagai pemlastis. Hasil penelitian menunjukkan bahwa eceng gondok dapat dimanfaatkan menjadi membran selulosa asetat-PVC dengan komposisi optimum pada perbandingan selulosa asetat : PVC : DOP yaitu 6:3:1. Hasil analisis FT-IR menunjukkan adanya interaksi antar ion Cu2+ dengan membran dilihat dari penurunan intensitas serapan sebelum dan sesudah didop yaitu 78.564 % menjadi 66.857 %  pada gugus C=O dari selulosa asetat. Hal ini diperkuat dengan analisis SEM yang menunjukkan morfologi permukaan membran yang porinya diduga terisi oleh ion logam Cu2+. Kata Kunci : Eceng gondok, Membran selulosa asetat-PVC, Tembaga (II) 
STUDI KOMPUTASI REAKSI ADSORBSI DISOSIASI GAS O2 PADA PERMUKAAN Pt-Fe DENGAN METODE TEORI FUNGSI KERAPATAN Darmin -; Rahmat Gunawan; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 10 No 2 (2013)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Platinum purpose as a catalysts on the cathode in a fuel cell hydrogen system gets a role in disconnection of O2 molecules. Power adsorption and dissociation of O2 molecules determined the effectiveness and efficiency of the nature of catalyst that is utilized. All this time metal is considered the most effective as a catalyst in fuel cells hydrogen is Pt. After be done investigation and calculation is known about platinum and iron alloy (Pt-Fe) can be utilized as a catalyst that has approached the effectiveness and efficiency of pure Pt metal. One of the way to determine the effectiveness and efficiency of the catalyst Pt-Fe alloys by calculating the value of the potential energy surface (PES). PES value calculation is done using density functional theory calculations. Analysis’s result point out the value of the potential energy surface (PES) O2 molecules in the Pt-Fe metal fusion for -929.8341 Ry with optimal distance of 2.4908 A of Pt-Fe’s metal surface and distances among O atoms as big as 3.3211 A.Keywords: Fuel cell hydrogen, Adsorption dissociation O2, PES, Density functional theory (DFT)
MODIFIKASI RESIN Ca-ALGINAT DENGAN ABU JERAMI PADI SEBAGAI MATERIAL PENGISI KOLOM PADA TAHAPAN PRAKONSENTRASI ANALISA ION Mn (II) SECARA OFF- LINE Adhi Surya Pranata Surya Pranata; Bohari Yusuf; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 12 No 1 (2014)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The modification of resin Ca - Alginate with rice straw ash as a column filler material for preconcentration step of Mn(II) ion. Has been done Preconcentration method was used by off-line method, water samples were passed through the column and eluted with 0.1 M H2SO4. The eluate was taken and detected by using Spectrophotometer UV-Visible. Optimum composition of modified resin Rice straw ash - Ca - Alginat were at 1% Na - Alginate, 0.1 M CaCl2, and 0.5 g rice straw ash. The result of research shown the optimum condition of retention capacity ion Mn(II) was 0.08211 mg Mn / gr resin. The best sorption at pH 2, and optimum condition of eluent concentration 0.1 M H2SO4, sample volume 12 mL and eluent volume was 5 mL. The analytical performance of this method was good for determination of ion Mn(II) that could be evaluated by limit of detection about 0.7727 mg/L with the reproducibility level shown by the precentage of the coefficient variance was 1.179 %. This method could be applicated to determine ion Mn(II) at the natural water samples from Mahakam river with a recovery percentage of > 95 %, used spike method that shown this resin is good to using at preconcentration stage determination of ion Mn(II).
VALIDASI METODE PENENTUAN Cd (II) DALAM PUPUK NPK SECARA SPEKTROFOTOMETRI SERAPAN ATOM NYALA DI LABORATORIUM UJI KUALITAS, PT. PUPUK KALIMANTAN TIMUR Leonardus Lewo Hayon; Alimuddin Alimuddin; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 19 No 1 (2021)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v19i1.898

Abstract

The research about validation method of determination of Cd (II) in NPK fertilizer by Flame Atomic Absorption Spectrophotometry at the Quality Control Laboratory, PT. Pupuk Kaltim has been done. Determination of Cd (II) was done by referring to the Indonesian National Standard (SNI) 2803:2012. Based on the research results obtained by the correlation coefficient (r) was 0.9991; reproducibility with a relative standard deviation (RSD) value was 4.502 % less than 2/3 CV Horwitz was 9.757 and repeatability with a relative standard deviation (RSD) value was 5.225% less than 2/3 CV Horwitz was 9.695; % recovery was in the range of 80-110 % with an average was 98.56 %; limit of detection was 0.056 mg/kg and limit of quantitation was 0,066 mg/kg; uncertainty estimation of measurement with uncertainty components of concentration, volume, mass, precision and purity of the standard solution, obtained the expanded uncertainty value with a 95 % confidence level was ± 0.197 mg/kg and uncertainty percentage value was 10.43 %.
OPTIMASI KINERJA ANALITIK PADA PENENTUAN KADAR FOSFOR SEBAGAI P2O5 PADA ABU BATUBARA DENGAN METODE SPEKTROFOTOMETER VISIBLE Eka Apriska S Kusuma; Aman Sentosa Panggabean; Yasser Arafat
JURNAL KIMIA MULAWARMAN Vol 13 No 1 (2015)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The research on optimization of analytical performance in the determination of phosphorous as P2O5 content in the coal ash with visible spectrophotometer method has been done. In this research was conducted validation visible spectrophotometer method to establish the levels of phosphorus in coal ash. Validation parameters used in this research were accuracy, precision, linearity, LOD, LOQ and ruggedness methods. From the result of this research, accuracy was stated in percent recovery, precision was stated as a RSD percent, withthe equation of linearity as y=0,1768x - 0,0076. From the equation, it will be obtained LOD and LOQ values. And endurance test methods that varied the length of it digest time. From the results it can be concluded that the determination of phosphorous content in the coal ash using visible spectrophotometer method has good precisionand accuracy, and able to be justifiedKeywords: Coal, Phosporous, Analytical Performance, Visible Spectrophotometer.
PEMANFAATAN AMPAS TEBU SEBAGAI MATERIAL ADSORBEN BESI, MANGAN, pH, COD, BOD DAN TSS PADA AIR SUMUR Rina Rina; Alimuddin Alimuddin; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 16 No 2 (2019)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v16i2.424

Abstract

The research about adsorption concentration of iron, manganese, pH, COD, BOD and TSS at well water using baggase as adsorbent material. The content of iron and manganese was determined using AAS; pH using pH meter; COD and BOD using titration method; TSS using gravimetry me. The results of research showed the best percentage of decrease was use of baggase activated with KOH, can be showed in the reduction of iron was 42.80%, manganese 94.93%, pH 8.45%, COD 24.75%, BOD 32.21%, TSS 2.88%, the percentage of recovery of iron 98.05% and manganese 88.31%.
PERBANDINGAN KINERJA ANALITIK HASIL PENENTUAN ION LOGAM Pb DENGAN MENGGUNAKAN SPEKTROFOTOMETER SERAPAN ATOM DI BERBAGAI LABORATORIUM SAMARINDA Arifin Syam Surya; Bohari Yusuf; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 19 No 1 (2021)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v19i1.909

Abstract

The study about the comparison of analytical performance of the determination of Pb metal ions using Atomic Absorption Spectrophotometer in various laboratories in samarinda has been conducted. The validated methods are linearity, detection limits, quantity and precision limits. The results showed, a standardized regression test obtained by laboratory A, a value of R2 ≥ 0.4103, laboratory B a value of R2 ≥ 0.983 and laboratory C, a value of R2 ≥ 0.000. The detection limit found at laboratory A was 0.6728 µg/L, laboratory B was 0.1989 µg/L and laboratory C was 0.0001 µg/L. The quantization limit obtained by laboratory A was 0.6817 µg/L, laboratory B was 0.6063 µg/L and laboratory C was 0.0001 µg/L. The precision test of laboratory A was 7.2208, laboratory B was 5.4557 and laboratory C was 0,000. The result of determining Pb of gas station soil samples in laboratory A is 0.737 µg/L and laboratory B is 0.391 µg/L, so that means they have exceeded the quality standards set by the Indonesian National Standard (INS).
PENENTUAN KLORAMFENIKOL DALAM DAGING AYAM BROILER DENGAN METODE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 9 No 2 (2012)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Determination of chloramphenicol on broiler meat in traditional market by using High Performance Liquid Chromatography (HPLC) method has been done. The optimal of result determination to obtain, the HPLC system has been optimalized for the important parameters are composition of mobile phase, injection sample volume, flow rate and eluen pH. The result of research shown that the optimum conditions to obtain from the research are composition of mobile phase methanol:water (80:20), injection sample volume 5 µL, flow rate 0.5 mL/minute and eluent pH are 6 has been achieved. The analytical performance of method has been optimalized and gives good performance which shown with reproducibility of this method as coefficient of variation percentage (% CV) was 0.2198%, limit of detection was 0.1051 mg/L, and % recovery for the chicken meat sampel with 3 different samples > 95%. This result showed this method capable to application for the routine analysis of the determination chloramphenicol countent in samples.Keywords: Chloramphenicol, HPLC, Analytical performance, Broiler Meat
ANALISIS RESIDU KLORPIRIFOS DALAM SAYUR-SAYURAN DENGAN TEKNIK HIGH PERFORMANCE LIQUID CHROMATOGRAPHY (HPLC) Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 13 No 2 (2016)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The research about analysis of chlorpyrifos residue in vegetables by using High Performance Liquid Chromatography (HPLC) technique has been done. To obtain the optimal measurement results, the measurement performed several important parameters in the chromatographic system was composition of mobile phase, volume injection sample, flow rate and pH eluent. Optimum measurement conditions obtained was mobile phase composition (water : methanol) with 70 : 30, volume injection sample are 5 mL, flow rate are 0.5mL/menit and pH eluent are 7. The analytical performance that obtained is good showed with the reproducibility value as percentage coefficient variance (% CV) was 0.0664%, limit of detection (LOD) was 0.44 ppm, with a recovery percentage of > 95%. The results obtained showed the HPLC technique can be used for the routine analysis in the determination of chlorpyrifos for the vegetable samples.
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