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

Published : 27 Documents
Articles

Found 27 Documents
Search

Applying Spatial Analysis Tools in Public Health: The Use of AERMOD in Modeling the Emission Dispersion of SO2 and NO2 to Identify Exposed Area to Health Risks Jayadipraja, Erwin Azizi; Daud, Anwar; Assegaf, Alimuddin Hamzah; Maming, Maming
Public Health of Indonesia Vol 2, No 1 (2016): January-March 2016
Publisher : Public Health of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (408.615 KB)

Abstract

Background: The cement industry is one of the main contributors of pollutant gasses in the environment through stack emissions.Aim: This study aims to model the dispersion of SO2 and NO2 gasses and to determine the area of the dispersion by American Meteorological Society – Environmental Protection Agency Regulation Model or AERMOD has been utilized by PT. Semen Tonasa (Tonasa Cement, Ltd.).Methods: Meteorological data from AERMENT was collected from reanalysis of MM5 data. While topographical data was extracted from SRTM30 satellite data. The model was carried out for a year, to cover both the dry and rainy season.Results: The result of the modeling showed that the peak value of the concentration of SO2 and NO2 pollutants for one hour are 135 μg/m3 and 160 μg/m3 respectively (quality standards of SO2 and NO2 are 900 μg/Nm3 and 400 μg/Nm3). The area of dispersion tends to be in the eastern area, such as District Minasatene (Sub-district Bontoa, Kalabbirang, Minasatene dan Biraeng), District Bungoro (Sub-district Biringere, Sapanang, Mangilu, Bulu Tellue) and District Labakkang (Sub-district Taraweang). Key words: Spatial analysis, AERMOD, AERMOD, cement factory, exposed area, SO2 and NO2
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

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
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

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 AMMONIUM HYDROXIDE COMPOUND AS CARBOSORB Tenrisa’na, Andi; Zakir, Muhammad; Maming, Maming
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

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
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

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.
UTILIZATION OF ETHANOLAMINE AS CARBON DIOXIDE ABSORBER FOR Yusuf, Asdiana Irma; Zakir, Muhammad; Maming, Maming
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

Abstract

Utilization of ethanolamine as carbon dioxide absober for estimating of coral age from langkai island via LSC (Liquid Scintillation Counting) method has been done. Focus is to analyze coral reefs taken from Langkai island surface which is relatively far from the influence of human activities. Chemical preparation was carried out by using a mixture of NaOH with H2O2 30% followed by a mixture of HClO4 with H2O2 30%, and finally with HCl solution to produce a clean sample with 8.6% weight reduction. Carbonate matrix samples as CO2 is produced by reaction with HCl 10% and absorbed by ethanolamine solution 30% as carbamate complex. The total carbon in the sample solution is 4.542 grams obtained through decreased method after and before absorbtion process. Total carbon in 8 mL sample is 0.2477 grams. Radiocarbon dating method based on the measurement of the specific activity of the samples acquired from the result of LSC (Liquid Scintilation Counter)Hidex 300 SL counting. Age of coral reefs was counted from specific activities data and average activities of modern carbon by using radioisotope decay rate formula. The spesific activities of 14C in coral reefs from Langkai island is 14.55 ± 1.1 dpm/gC. Finally the age of coral reefs was estimated 415.01 ± 91.08 years.Keywords: Coral reefs, LSC (Liquid Scintilation Counting), radiocarbon dating, Spermonde islands.
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 | 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.
Sintesis Nanopartikel Fe Menggunakan Bioreduktor Ekstrak Fitoplankton Spirulina platensis Nurillah, Isti; Raya, Indah; Maming, Maming
Indo. J. Chem. Res. Vol 3 No 2 (2016): Edisi Bulan Januari (Edition For January)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar

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.
ELECTRODEPOSITION OF Cu ON THE SURFACE OF SILICA FREE RICE HUSK ACTIVATED CARBON WITH ULTRASONIC IRRADIATION Andhika, Ryan; Zakir, Muhammad; Maming, Maming
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 8 No 2 - December 2015
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v8i2.2471

Abstract

Electrodeposition of Cu on the surface of silica free rice husk activated carbon with ultrasonic irradiation aimed to increase the value of specific capacitance was carried out. Silica free rice husk activated carbon was synthesized using H3PO4  activator and extraction of silica using KOH. The surface area of rice husk carbon was obtained before and after the extraction of silica and after activation were 57.2833 m2/g, 180.5378 m2/g and 184.6074 m2/g, respectively. XRF analysis showed that Cu depositioned on the surface of silica free rice husk activated carbon and based of CV measurements showed that electrodeposition of Cu with ultrasonic irradiation can increased the value of specific capacitance. Specific capacitance of silica free rice husk activated carbon before and after electrodeposition of Cu with ultrasonic irradiation were 657.75 nF/g and 721.08 nF/g, respectively.
Sintesis Heksa-p-tert-Butilheksaesterkaliks[6]Arena dari p-tert-Butilkaliks[6]Arena Dali, Nasriadi; Wahab, Abd. Wahid; Firdaus, Firdaus; Maming, Maming
Al-Kimia Vol 3, No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v3i1.1665

Abstract

A research has been done to synthesize hexa-p-tert-butylhexaestercalix[6]arene using p-tert-butylcalix[6]arene as a starting material. The synthesis was carried out by esterifying p-tert-butylcalix[6]arene. Synthesis products were identified and characterized by melting point, TLC, FTIR, 1H-NMR, and 13C-NMR spectrometers. Synthesis products was obtained a white solid powder (68.45% recovery), melting point 349-351 °C, TLC (SiO2, ethanol: ethyl acetate = 1: 1 v/v, Rf = 0.90). The results of the analysis  of synthesis products with FTIR, 1H-NMR, and  13C-NMR spectrometer showed that the synthesis products compound is 5, 11, 17, 23, 29, 35-hexakis (p-tert-butyl)-37, 38, 39, 40, 41, 42-hexakis (ethoxy-carbonylmethoxy) calix[6]arene.