Maming Maming
Chemistry Department, Faculty of Mathematics and Natural Sciences, Hasanuddin University, Makassar

Published : 24 Documents
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SINTESIS NANOPARTIKEL FE MENGGUNAKAN BIOREDUKTOR EKSTRAK FITOPLANKTON SPIRULINA PLATENSIS Nurillah, Isti; Raya, Indah; Maming, Maming
Indonesian Journal of Chemical Research Vol 3 No 2 (2016): Edisi Bulan Januari (Edition for January)
Publisher : Chemistry Department, Pattimura University

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Abstract

This study aims to synthesize Fe nanoparticles by bioreduction using the phytoplankton extract of S. platensis that acts as a reducing agent. Synthesis process is done by adding extracts of S. platensis to a solution of 1 mM FeCl3. The formed nanoparticles characterized by UV-Vis spectrophotometer, Fourier Transform Infra Red Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Energy Disperse X-Ray Spectroscopy (EDX/EDS), X-Ray Diffraction (XRD) and X-Ray Flourosence (XRF). The results showed that the solution of Fe3+ ions can be reduced by phytoplankton extract of S. platensis Fe nanoparticles formed. The average size of the particles based on the Debye-Scherrer equation was 68.10 nm. While the morphology of Fe nanoparticles was spherical shape.
EVALUATION THREE SCINTILLATORS USED FOR ACTIVITY Rahmawati, Rahmawati; Noor, Alfian; maming, Maming; Zakir, Muhammad
Marina Chimica Acta Vol 16, No 1 (2015): Enzyme from Bacteria and Coral Age
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (305.974 KB) | DOI: 10.20956/mca.v16i1.954

Abstract

Three scintillators, ultimagold, aqualight, and aquasol, have been applied to compare performance of liquid scintillation counter upon its C-14 activity measurement in biodiesel supplied by Pertamina in Makassar. The results showed that efficiency of aquasol is lower(0.2), while aqualight and ultimagold is higher (> 0.5). However eff iciency stability of ultimagold is considered better. It can be concluded that using ultimagold may provide more efficient and stable result and consequently more suitable as scintillator.
LIGNIN AND CARBON ISOTOPES COMPOSITION OF SUSPENDED PARTICULATES BY CAPILLARY GAS CHROMATOGRAPHY OF CUPRIC OXIDE OXIDATION PRODUCTS Rustiah, Waode; Noor, Alfian; Maming, Maming; Lukman, Muhammad
Marina Chimica Acta Vol 19, No 1 (2018): Volume 19, No. 1 (2018)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.044 KB) | DOI: 10.20956/mca.v19i1.4204

Abstract

Lignin are high molecular weight phenolic polymers that occur as major constituents of vascular plants. As a result of their natural abundance, wide distribution, and resistance to microbial degradation, lignin are also commonly found in soil and sedimentary organic matter. The aim of this study was to identify the contribution of lignin to the suspended particulate fraction in the Losari Beach and Lae-lae Island, where indicate highly degraded lignin materials. Lignin was characterized by oxidative degradation, cupric oxide being chosen as the most suitable oxydizing agent to produce simple lignin-derived phenols that are extracted with hexane and analyzed by capillary gas chromatography on fused silica columns, provides the high sensitivity and precision required for the identification and quantitation of trace levels of lignin in seawater. A suite of up to 8 phenols is produced that reflects the relative concentration and plant tissue sources of lignin present in the suspended material.
UTILIZATION OF AMMONIUM HYDROXIDE COMPOUND AS CARBOSORB Zakir, Muhammad; Maming, Maming; Tenrisa’na, Andi
Marina Chimica Acta Vol 16, No 1 (2015): Enzyme from Bacteria and Coral Age
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (267.698 KB) | DOI: 10.20956/mca.v16i1.959

Abstract

tilization Of Ammonium Hydroxide Compound As Carbosorb For Measurement Of Carbon-14 In Determination Age Of Coral Reef Sample has been performed. The objective of this research is to Determine the age of Coral Sample of Spermonde Islands through Activity Measurements of carbon-14 with LSC (Liquid Scintillation Counting) method. Coral sample were taken from around Langkai Island. The steps of this research are: Sample preparation, CO2 absorption with solution of MEA, DEA and TEA and measurement of carbon-14 activity using Liquid Scintillation Counter (LSC) Hidex 300 SL. Absorption CO2 using ammonium hydroxide. The specific activity of coral sample using carbosorb ammonium hydroxide was 14.43 ± 1,2 DPM/g C. The age of coral sample calculated from the specific activity using carbosorb ammonium hydroxide was 484.63 ± 54 years.Keywords : LSC (Liquid Scintilation Counter), Carbon-14, CO2 Absorption, Ammonium hydroxide, Langkai Island
HEAVY METAL ANALYSIS Ni, Cr AND Zn ON SEDIMENT OF MAMUJU DISTRICT USING INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROSCOPY (ICP-OES) Suraedah, Suraedah; Maming, Maming
Marina Chimica Acta Vol 19, No 1 (2018): Volume 19, No. 1 (2018)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (253.824 KB) | DOI: 10.20956/mca.v19i1.4209

Abstract

This study discusses the heavy metals of Ni and Zn in aquatic sediments of Mamuju Regency using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). Sediment samples were taken at four different locations, namely Rimuku River Estuary, Manakara Beach Pier, Muara River Estuary and Mamuju River estuary. The results obtained for Ni metals ranged from 0.0005 - 0.0019 mg / L and Zn metals ranged from 0.0041 - 0.0066 mg / L and still below the threshold of metal quality standards in the sediment or can be said not polluted.
UTILIZATION OF METHYLAMINE COMPOUND AS CO2 ABSORBENTS FOR Perdana, Andi Agung; Maming, Maming; Zakir, Muhammad
Marina Chimica Acta Vol 16, No 1 (2015): Enzyme from Bacteria and Coral Age
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (402.973 KB) | DOI: 10.20956/mca.v16i1.953

Abstract

Utilization of methylamine as CO2 absorbent to measure carbon-14 activity of coral sample has been done. The objective of this research is to Determine the age of Coral Sample through Activity Measurements of carbon-14 with LSC (Liquid Scintillation Counting) method. Sample were taken from Langkai Island which is far from human activities. Sample preparation includes physical and chemical leaching to produce a clean white sample. Carbon in the sample was released as CO2 by reaction with HCl 10 % and than absorbed by methylamine yield carbamate compound. Absorbed carbon in 1 mL absorber was 0,044 g from the results of weight reduction before and after absorption. The specific activity of the coral sample was 14.56 DPM/g C. Age of the coral sample based on the specific activity was 408.48 ± 43.69 years.
UTILIZATION OF SODIUM HYDROXIDE AS ABSORBER FOR 14C ANALYSIS Kurniaty, Febby; Maming, Maming; Zakir, Muhammad; Noor, Alfian
Marina Chimica Acta Vol 16, No 1 (2015): Enzyme from Bacteria and Coral Age
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.682 KB) | DOI: 10.20956/mca.v16i1.958

Abstract

Research on utilization of sodium hydroxide as absorber for 14C analysis of coral ages estimation in Langkai Island using LSC (Liquid Scintillation Counting) method has been done. Samples analyzed comes from Langkai Island, which is relatively low disturbing by human activities. Samples were cleaned according to physical and chemical treatment using mixture of acid-base solution: NaOH , H2O2 , HClO4 and HCl. This step remove about 8,62% mass of the sample and it leaves white. Carbonated of sample were remove as CO2 by reaction with HCl 10% and trapped by 5M NaOH as Na2CO3. Total carbon in the sample can be determined by titration method with the total weight of carbon sample are 0,2688 g / 8 mL. Specific activity of carbon-14 in the sample that were counted by Hidex 300 SL liquid Scintillation Counter were 14.72 ± 7.92 DPM/gC related to their age. By applying specific activity of the samples and specific activity carbon-14 in the modern carbon (15.3 ± 0.1 DPM/gC) to radioisotop desintegration equation, the age were 316,90±170,506 years.Keywords : Carbon Dating, Liquid Scintillation Counting, Coral, Spermonde Archiphelago
DETERMINATION OF AGE OF CORAL REEFS ON PANIKIANG ISLAND, BARRU DISTRICT, SPERMONDE ISLANDS THROUGH MEASUREMENT ACTIVITY 14C USING LSC (LIQUID SCINTILLATION COUNTING) METHOD Arisandi, Arisandi; Noor, Alfian; Maming, Maming
Marina Chimica Acta Vol 20, No 1 (2019): Volume 20, No. 1 (2019)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.382 KB) | DOI: 10.20956/mca.v20i1.6570

Abstract

Determination Of Age Of Coral Reefs On Panikiang Island, Barru District, Spermonde Islands Through Measurement Activity 14C Using LSC (Liquid Scintillation Counting) Method. This research was using a sample of coral reefs taken from the Panikiang Island, Barru, Spermonde Islands. This research has been carried out by using sample preparation with physic and chemical. Sample preparation was done physically and chemically. Chemical preparation was carried out by using a mixture of NaOH with 30% H2O2 followed by a mixture of HClO4 with 30% H2O2, and finally with HCl solution to produce a clean sample with a weight reduction of 7.94%. Absorption of CO2 through reaction with HCl 10% and NH4OH as Carbosorb .produced K2CO3. The total carbon in the sample solution is 0.2496 gram sobtained through titration method.  Radiocarbon dating method based on the measurement of the specific activity of the samples obtained from the results of counts LSC (Liquid Scintilation Counter) Hidex 300 SL.The specific activity of coral sample is 14.68 ± 4.04 DPM/gC. Age of coral sample which were calculated from the specific activity were 342.04 ± 37.66 years.
HEAVY METAL ANALYSIS CO AND V ON SEDIMENT DISTRICT OF MAMUJU DISTRICT USING INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROSCOPY (ICP-OES) Permatasari, Adji; Maming, Maming
Marina Chimica Acta Vol 19, No 1 (2018): Volume 19, No. 1 (2018)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.717 KB) | DOI: 10.20956/mca.v19i1.4207

Abstract

This research concerning heavy metal analysis of Co and V on Mamuju Regency water sediments using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). Sediment sampling was conducted on four stations, namely the mouth of the Mamuju river, the mouth of the river Karema, the mouth of the river Rimuku, and front of Manakarra beach platform. The results showed that Co metes ranged from 0.167-0.208 mg/L while for metal V ranged from 0.649-0.944 mg/L. Of the three metals in the analysis are still below the threshold of metal quality standards in sediments or can be said not polluted.
DETERMINATION OF KOH EFFICIENCY AS CARBOSORB IN DETERMINING AGE OF CORAL REEF SAMPLES IN SELAYAR ISLANDS THROUGH LSC METHOD (LIQUID SCINTILLATION COUNTING) Amri, Muhammad; Noor, Alfian; Maming, Maming
Marina Chimica Acta Vol 20, No 1 (2019): Volume 20, No. 1 (2019)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (461.299 KB) | DOI: 10.20956/mca.v20i1.6569

Abstract

Research using the method of LSC (Liquid Scintillation Carbon) in determining the age of coral reefs in the Selayar islands has been carried out. The samples of coral reefs were taken between the tides. Sample preparation was carried out physically and chemically using an acid-base mixture solution: NaOH, H2O2, HClO4 and HCl produced coral samples that looked whiter with weight reduction of up to 1.6%. Carbonate is separated into CO2 by reaction with 10% HCl and absorption with KOH 1 M as K2CO3. Total carbon is determined by the titration method which produces 0.0542 g of total carbon sample. Specific activity of 14C measured by enumeration with LSC is 12.0542 DPM/gC. The age of coral reef samples obtained from sample specific activity data was 1971,728 years