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Jurnal Progres Kimia Sains
Published by Universitas Halu Oleo
ISSN : 22525181     EISSN : -     DOI : -
Core Subject : Science,
Chemistry
Jurnal Progres Kimia Sains ialah sebuah jurnal ilmiah yang komit kepada perkembangan pengetahuan penelitian ilmiah dalam bidang ilmu Kimia. Jurnal ini menerbitkan artikel, ulasan topik terkini, dan catatan penelitian yang menarik minat para kimiawan, serta bersifat orisinal terutama dari segi isi dan pendekatannya.
Arjuna Subject : -
Articles 8 Documents
 1 
Search results for , issue "Vol 1, No 2 (2011): JPKS Open Access" : 8 Documents clear
Prekonsentrasi Dan Analisis Senyawa Renik Fenol Pada Sampel Perairan: Optimasi Kinerja Adsorben Pada Ekstraksi Padat-Cair Armid, Armid
Jurnal Progres Kimia Sains Vol 1, No 2 (2011): JPKS Open Access
Publisher : Universitas Halu Oleo

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Abstract

Dissolved phenol in aquatic system has potential risk on human health.Accordingly, quantification of phenol compound presents in aquatic samples by improvedmethodis of significantly required in the field of Environmental Chemistry. This study aimsto evaluate the usefulness of Sep Pak C18 cartridge as the adsorbent of phenol compoundprior to analyzed by Gas Chromatography. Study is focused on the sample pH and flowrate optimization to gain the best performance of cartridge. Results indicated thatadjusting the pH of 1-2 and the flow rate of 5 ml/minute of sample was highlyrecommended. Such a method is relatively accurate within the range of concentration 1.2ppb 15 ppm of dissolved phenol, thus it may be considered as an alternative method toanalyze phenol which exists within trace level in the aquatic systems. The method has beensuccessfully applied to analyze phenol in seawater samples from Losari Beach, Makassar.
Sintesis dan Karakterisasi Adsorben Lempung Terimpregnasi Oleh 3-merkapto-1,2,4-triazol (trzsh) Fahmiati, Fahmiati
Jurnal Progres Kimia Sains Vol 1, No 2 (2011): JPKS Open Access
Publisher : Universitas Halu Oleo

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Abstract

Impregnation of clay is one of method to increase the adsorption capacity. Synthesisand characterization of clay impregnated 3-mercapto-1,2,4-triazole (TRZSH) has beencarried out. Functional groups of clay was characterized by infrared spectrophotometry whileBET test was performed to determine its specific surface area and porosity. Results showedthat clay impregnated TRZSH comprises silanol (Si-OH), siloksan (Si-O-Si), C-N, C=N, andSH. Spesific surface area of clay impregnated TRZSH of 184.04 m2/g. Such it has porosityvolume and radius of porosity of 123.902 x 10-3 cm/g and 134.672 A, respectively.
Kinetika dan Karakterisasi Amiloglukosidase Isolat Aaspergillus niger Dari Limbah Ampas Sagu -, Amiruddin
Jurnal Progres Kimia Sains Vol 1, No 2 (2011): JPKS Open Access
Publisher : Universitas Halu Oleo

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Abstract

Study of characterization and kinetic amyloglucosidase from Aspergillusniger isolateusing sago pith waste has been done. The aims of this research wereto know the optimumsubstrate concentration, metalions effect, and value of KM and vmaks of amyoglucosidase. Theresult of researches were obtained the optimum activity of amyoglucosidaseat 2% (w/v) ofstarch concentration. The activator of amyoglucosidase were Zn2+, Ba2+, Fe3+, and Co2+,while the inhibitor were Sn2+, Ca2+, Cu2+, Cd2+, Mn2+, Hg2+, and Ni2+. The ions of Hg2+ andNi2+were founded stopped of the enzyme activity. The variables of kinetic of amyloglucosidaewere obtained KM and vmaks value were. 4,40 % , 0,49 mU, respectively.
Respon Ganda Elektrode Kawat Emas Terlapis Polipirol Terhadap Kation Dan Anion Dari Surfaktan Nads Watoni, Abdul Haris
Jurnal Progres Kimia Sains Vol 1, No 2 (2011): JPKS Open Access
Publisher : Universitas Halu Oleo

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Abstract

The coating of gold wire electrode as working electrode with polypyrrole throughelectropolymerization by ciclyc voltammetry was performanced in the 0.01 M pyrrole solutioncontaining 1,0 ´ 10-4 M HDS dopant and 0.01 M KCl, KBr, and KI supporting electrolytes,respectively. The coated electrode prepared by KCl supporting electrolyte has the respontoward Na+ cations with highest sensitivity of 44.0 mV/decade in the concentration range of5,0 ´ 10-5 – 1,0 ´ 10-3 M and toward DS- anions with highest sensitivity of 26.2 mV/decadein the concentration range of 1,0 ´ 10-15 – 1,0 ´ 10-12 M. Coated electrode prepared by KBrsupporting electrolyte might respon toward Na+ cations with highest sensitivity of 42.4mV/decade in the concentration range of 5,0 ´ 10-4 – 1,0 ´ 10-3 M and toward DS- anionswith highest sensitivity of 35.0 mV/decade. The coated electrode prepared by KI supprotingelectrolyte has a respon toward Na+ cations with highest sensitivity of 49.2 mV/decade in theconcentration range of 5,0 ´ 10-4 – 1,0 ´ 10-3 M and toward DS- anions with highestsensitivity of 16.5 mV/decade in the concentration range of 1,0 ´ 10-15 – 1,0 ´ 10-9 M.
Skrining Bioaktivitas Ekstrak Kulit Akar Bakau Merah (Rhizophora apiculata bl.) Terhadap Daya Hambat Pertumbuhan Koloni Bakteri Streptococcus sp. Darlian, Lili
Jurnal Progres Kimia Sains Vol 1, No 2 (2011): JPKS Open Access
Publisher : Universitas Halu Oleo

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Abstract

The research to determine the bioactivity of the root bark of Rhizophoraapiculata extract on the inhibition of the growth of colonies of bacteria Streptococcussp was carried out. Roots of Rhizophora apiculata bark extract is obtained byextraction by maceration and liquid-liquid partition using solvents methanol and thesolvent of n-hexane, chloroform, and ethyl acetate, respectively. Bioactivity testingagainst bacterial colony growth of Streptococcus sp. performed using the agar diffusionmethod on media nutrient agar. The results showed that extracts of n-hexane,chloroform extract and ethyl acetate extract of the root bark of Rhizophora apiculatawere impregnated on paper discs can form a clear zone around it. This indicates that theroots of Rhizophora apiculata bark extract could inhibit the growth of colonies ofbacteria Streptococcus sp. Greatest inhibition zone diameter derived from the ethylacetate fraction of 2.90 mm, followed by a 1:03 mm from the chloroform fraction, andby 0:47 mm fraction of n-hexane.
Alternatif Pengolahan Limbah Organik Rumah Tangga Untuk Produksi Biogas Susilowati, Prima Endang
Jurnal Progres Kimia Sains Vol 1, No 2 (2011): JPKS Open Access
Publisher : Universitas Halu Oleo

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Abstract

Waste is a source of organic material that can be recycled into biogas. This studysought to produce biogas from the fermentation of organic waste using anaerobic microbesisolated from sewage and cow rumen fluid. The study was conducted in the laboratory-scaleanaerobic reactor with a volume of 750 mL, at room temperature, incubation time of 7, 14, 21,28, 35, 42, 49 days, waste solids concentration 1%, 3%, 5%, 7% and 10 %. CO2 produced wasmeasured by the method of deposition by solution of Ba (OH) 2 is converted into volumeusing the general equation of the ideal gas. The difference between the total gas volumeproduced by CO2 gas is methane gas volume value (CH4). The results showed the highestproduction of waste solids obtained at 7% concentration, incubation time of 42 days. Biogas isproduced 99.86 mL / g litter, the total amount of biogas produced during the 7 weeks of 537mL / gram of waste.
Detection Limit Of Carbamate Pesticides Biosensors Based Enzyme Acetylcholinesterase And Cholin Oxidase On Platinum Electrode -, Mashuni
Jurnal Progres Kimia Sains Vol 1, No 2 (2011): JPKS Open Access
Publisher : Universitas Halu Oleo

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Abstract

The presence of carbamate pesticides in environmental and food poses a potentialhazard to human health and there is a growing interest in their rapid and accurate determinationfor food safety and environmental monitoring. The aim of this research is to designelectrochemical biosensor for analyzingcarbamate pesticides residue in food material.Acetylcholinesterase (AChE) and cholin oxidise (ChO) enzyme was immobilized at platinum (Pt)wire plated with membrane materials of SA 5%, 10%, 15% and GA 25%. Result of this researchshow that for cellulose acetate (SA) 5% the detection limit is 10-7,7 M, for SA 10% the detectionlimit is 10-8,7 M, for SA 15% the detection limit is 10-7,6 M. This a results is approximately equal to2,2 ppb). ), which means that this biosensor is very sensitive for determining carbamatespesticides residue where its detection limit is comparable to to the detection limit of conventionalinstrument such as Gas Chromatography (GC) and High Pressure Liquid Chromatography(HPLC), i.e. respectively 1,5 ppb and 2,0 ppb.
Sintesis Kitosan Nanopartikel dengan Metode Sonokimia, Gelasi Ionotropik, dan Kompleks Polielektrolit Talu’mu, Marlina Daeng
Jurnal Progres Kimia Sains Vol 1, No 2 (2011): JPKS Open Access
Publisher : Universitas Halu Oleo

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Abstract

The aims of this research are to find out how to prepare chitosan nanoparticles bysonochemical method; ionotropic gelation; and polyelectrolyte complexes and the influenceof variations in methods of perparation of chitosan nanoparticles to chitosan nanoparticlescharacteristics that include particle size dan functional group. Techniques of data collectionwas conducted by means of the observation of characteristics of chitosan nanoparticles. Theresults shows that the variation of the method of making an impact on the characteristics ofchitosan nanoparticles preparation. The particle size of nanochitosan synthesized bysonochemical, ionotropic gelation, and polyelectrolyte complex is 800, 500, 600 nm,respectively. Analysis of functional groups of chitosan nanoparticles by FTIR shows theabsorption characteristic spectrum of the nanochitosan.

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