cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Yeanchon H. Dulanlebit
Contact Email
journal.mjoce@gmail.com
Phone
+6281312409360
Journal Mail Official
journal.mjoce@gmail.com
Editorial Address
Gedung Jurusan Pendidikan MIPA FKIP Lt. 2 Program Studi Pendidikan Kimia Jl. Ir. M. Putuhena, Kampus Universitas Pattimura Poka-Ambon, Maluku, Indonesia
Location
Kota ambon,
Maluku
INDONESIA
Molluca Journal of Chemistry Education (MJoCE)
Published by Universitas Pattimura
ISSN : 27228266     EISSN : 27228258     DOI : https://doi.org/10.30598/MJoCEvol10iss1pp1-7
Core Subject : Science, Education,
Chemistry Education
Molluca Journal of Chemistry Education (MJoCE) merupakan jurnal ilmiah berkala dengan ciri khas/identitas Kimia dari Maluku, seperti: minyak atsiri, produk dan pangan laut, pendidikan kimia yang berkarakter kelautan dan kepulauan, dll. Jurnal ini berisi tulisan ilmiah tentang bidang kimia yang meliputi hasil penelitian kimia, kimia teori, pendidikan kimia dan kimia terapan
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 164 Documents
 1   2   3   4   5 
PENGARUH BERAT NaOH TERHADAP PEMBENTUKAN ZEOLIT DARI ABU DASAR BATUBARA (BOTTOM ASH) Sunarti Sunarti; Nurul Hidayat Aprilita; Indriana Kartini
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 1 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss1pp23-29

Abstract

The effect weight of NaOH to zeolite formation from coal bottom ash has been investigated. Zeolite was synthesized by fussion with NaOH at 550oC, and variations weight of NaOH respectly: 2.5; 3.5; 4.5; 6.5 g and weight of Coal bottom ash is 2.5 g. The resulted by fussion with NaOH was hydrothermal treatment at 100oC, and 24 hour. The characterization result with IR Spectrophotometer and X-Ray diffraction showed that at variations weigh of NaOH/bottom ash (r) = 1, Na-P zeolite with increased intensity, A zeoliteand faujasite decreased intensity were obtained. The treatment r= 1.4, faujasite with increased intensity, but Na-P and A zeolite decreased intensity were obtained. The treatment r=1.8, sodalit increased intensity, and faujasite decreased intensity were obtained. The Treatment r=2.6, was obtained.
ANALISIS KANDUNGAN ASAM LEMAK OMEGA-3 EPA DAN DHA HEWAN LAUT TELUR BULUBABI (DIADEMA SETOSUM) DI DAERAH SULAWESI TENGGARA Nazudin Nazudin; Ngatidjo Ngatidjo
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 1 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss1pp30-44

Abstract

A research to determine fatty acid content of omega-3 EPA (Eicosapentaenoic Acid) and DHA (Docosahexaenoic) in long and short sharp point sea urchin eggs and to investigate the effect of heating time and adition of BHA (Buthylated Hidroxyanisol) antioxidant on degradation levels of EPA and DHA in sea urchin eggs has been done. Sea urchins (echinus sp) are one type of animal living in superficial waters also called sea brandals (rascals) and many of them live in Southeast Celebes, Moluccas, Indonesian New Guinea and some other regions of Indonesia. The sample of sea urchin eggs was taken from Southeast Celebes. Extraction of fatty acid omega-3 EPA and DHA was carried out by Folch extraction method, namely, by using a mixture ratio of 2:1 and 1:1 chloroform-methanol. The fatty acids of sea urchin egg obtained from the extraction were transestherified in methanol using BF3 as catalyst before injected into gas chromatography to determine fatty acid content. The results of the study showed that the fresh short point sea urchin eggs contained 7.34% omega-3 EPA and 1.11% DHA if the extraction was carried out by chloroform-methanol 2:1, while by using chloroformmethanol 1:1, the fatty acid content of EPA and DHA was 7.20% and 1.01%, respectively. For the fresh long point sea urchin eggs using chloroform-methanol solvent 2:1 contained 10.29% EPA and 0.81% DHA, while by using ratio 1:1 resulted in 10.07% EPA and 0.72% DHA. The EPA and DHA degradation levels of sea urchin eggs due to the variation of heating time of 20, 30, 40, 50 and 60 minutes were 5.86%, 8.09%, 9.40%, 10,49%, 11.17%, respectively for EPA and 11.71%, 81.08%, 83.08%, 90.00% and 98.78% respectively for DHA; while for long point sea urchin eggs the degradation levels of EPA were 9.43%, 8.25%, 3.11%, 2.71%, 0.31% and of DHA were 0.21%, 0.19%, 0.11%, 0.08% and 0.02%, respectively. Addition of BHA antioxidant at heating time of 30 minutes was able to prevent the degradation levels of EPA and DHA with optimum concentration of addition between 25–50 ppm
SINTESIS DAN UJI AKTIVITAS SENYAWA (1)-N-(n-BUTIL)- DAN (1)-N-(t-BUTIL)-1,10-FENANTROLINIUM SEBAGAI SENYAWA POTENSIAL ANTIMALARIA BARU Ruslin Hadanu; Sabirin Mastjeh; Mustafa Mustafa; Eti Nurwening Sholikhah; Mahardika Agus Wijayanti
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 1 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss1pp45-53

Abstract

The synthesis of (1)-N-(n- buthyl)- dan (1)-N-(t-buthyl)-1,10-phenanthrolinium with 1,10-phenanthroline monohydrate as starting material through two steps has been carried out. The first step of reaction is chlorination and bromination of n-buthyl-alcohol/t-buthyl alcohol using HCl and HBr, respectively. The result of reaction is nbuthyl bromide 2 (colourless liquid, 70.92%) and t-buthyl chloride 4 (colourless liquid, 92.36%), respectively. The second step of reaction is alkylation of 1,10-phenanthroline 5 using n-buthyl bromide and t-buthyl chloride reagents that its was refluxed for 21 and 23 h, respectively. The results of reaction are (1)-N-(n- buthyl)-1,10fenantrolinium bromida 6 and (1)-n-(t-buthyl)-1,10-fenantrolinium chloride 7 in yield from 84.70% and 78.16%, respectively. The results of testing in in vitro antiplasmodial activity at chloroquine-resistant P. falciparum FCR3 strain to (1)-N-(n-buthyl)- and (1)-N-(t-buthyl)-1,10- phenanthrolinium obtained that (1)-N-(n-buthyl)-1,10phenanthrolinium bromide 6 has higher antimalarial activity (IC50 : 0.03±0.01 µM) than antimalarial activity of (1)-n-(t-buthyl)-1,10-phenanthrolinium chloride 7 (IC50 : 2.09±0.08 µM). While, the results of testing in in vitro antiplasmodial activity at chloroquine-resistant P. falciparum D10 strain to (1)-N-(n-buthyl)- and (1)-N-(t-buthyl)1,10-f phenanthrolinium obtained that (1)-N-(n-butil)-1,10- phenanthrolinium bromide 6 has higher antimalarial activity (IC50 : 1.40±0.82 µM) than antimalarial activity of (1)-n-(t-buthyl)-1,10- phenanthrolinium chloride 7 (IC50 : 2.24±0.05 µM
ISOLASI EUGENOL DARI BUNGA CENGKEH DAN SINTESIS EUGENIL ASETAT (2-METHOXY-4-(2-PROPEN-1-YL)-PHENYL ACETATE) Yance Manoppo; H J Sohilait; Healthy Kainama
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 1 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss1pp54-63

Abstract

Isolation of eugenol from clove oil and synthesis of eugenyl acetate from eugenol had been concluded. Extraction of clove oil from clove flower by using petrolium benzene with sohxlet extraction method so obtained 33.82%. The isolation of eugenol with NaOH yields 32.07% with purity 97.47% by gas chromatography. Esterification of eugenol with acetate anhydride and sodium acetate anhydride as catalyst yields eugenyl acetate 51,67% with purity 98.38%. Elucidation of these structures were analyzed by FTIR, 1H-NMR and MS spectrofotometry
KAJIAN SPEKTROFOTOMETRI ULTRA VIOLET UNTUK ANALISIS SPESI IODIUM DALAM GARAM FORTIFIKASI Yeanchon H Dulanlebit
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 1 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss1pp64-71

Abstract

Iodine is an element nonmetal and essential micronutrient needed by human body in a trace amount. Iodine deficiency may cause brain damage, mental retardation, cretinism and endemic goiter. Analysis method of detecting iodine has widely been used, where iodometry analysis is a standard method to determine iodine content. The analytical performance of iodine determination with a sensitive and selective spectrophotometric method had been evaluated. Iodate reacted with the excessive iodide in an acid medium to form tri-iodide, which can be detected with spectrophotometry at 350 nm. The result of analytical performance evaluation of that method indicated a linearity of standards curve at the range of 1.0-10.0 mg/L, with the R2 value approached one. Result of research, content of iodine in iodized salt sample are 21.45 mg kg-1, 24.88 mg kg-1, 35.42 mg kg-1, 37.98 mg kg-1, 42.84 mg kg-1, dan 57.77 mg kg-1
FOTODEGRADASI FENOL MENGGUNAKAN FOTOKATALIS TiO2-Zeolit DAN SINAR UV Yeslia Utubira; Melvie Talakua
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 1 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss1pp72-78

Abstract

The photodegradation of Phenol using TiO2-Zeolite and UV systems have been investigated. The preparation of titan oxide-zeolite composite has been done by dispersing oligocation of titanium solution into suspension of natural zeolite and the solid phase was heating by microwave oven at 800 Watt for 5 minutes. Characterization results exhibited that the formation of TiO2 on internal as well as external surfaces of zeolite could not be detected with x-ray diffractometry and FT-IR spectrophotometry, however elemented analysis result with XRF indicated titan content increased from 0.26% (w/w) in zeolite to 2.80% (w/w) in TiO2-zeolite. Characterization result by GSA exhibited the increased of specific surface area from 19.57 m2/g in zeolite to 67.96 m2/g in TiO2-zeolite; total pore volume from 20.64 x 10-3 mL/g in zeolite to 49.561 x 10-3 mL/g in TiO2-zeolite; pore radius average decreased from 21.10 Ã… in zeolite to 14.58 Ã… in TiO2-zeolite. Photocatalytic activity of TiO2-zeolit for degradation phenol showed that in 75 minutes UV radiation resulted in the decreased concentrate up to 44.29%. Meanwhile the sorption study showed that photocatalyst TiO2-zeolite caused the decrease of concentrate up to 17.9%.
KEEFEKTIFAN PENGGUNAAN MULTIPLE INTELLIGENCES DALAM PROSES PEMBELAJARAN SAINS PADA SISWA SD DI KOTA AMBON Yuli Filindity; Sukardjo Sukardjo
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 2 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss2pp79-91

Abstract

This study attempts to investigate how the science learning process applies different multiple intelligences. The problem is focused on the students’ scientific performances and attitudes in science learning. This study was a quantitative descriptive study. The research population comprised all students of SD Negeri Latihan 1 Ambon and the sample was Year III students. The sample was selected using the purposive sampling technique. The data were collected by means of the Multiple Intelligences Test to classify the students into learning centers. Then in the teaching and learning activities, the students were grouped into learning centers for the assessment of their scientific performances and attitudes. The quantitative data were collected and analyzed using the descriptive technique. The results of the study show that the application of multiple intelligences in the science learning process is effective. When the students learn in the learning centers, they are able to perform in accordance with the objectives they have to attain in science learning
SINTESIS DAN UJI AKTIVITAS ANTIMALARIA SENYAWA (1)-N-BENZIL-1,10- FENANTROLINIUM BROMIDA Ruslin Hadanu; Sabirin Mastjeh; Jumina Jumina; Mustafa Mustafa; Eti Nurwening Sholikhah; Mahardika Agus Wijayanti
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 2 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss2pp92-102

Abstract

A synthetic methods was employed to prepare (1)-N-benzyl)-1,10-phenanthroliniumbromide 4 from 1,10phenanthroline 3 and benzylchloride 1 through substitution and alkylation reactions. The compound (1)-Nbenzyl)-1,10-phenanthroliniumbromide 4 was tested through antiplasmodial test. The benzylbromide 2 was synthesized through substitution reaction of benzylchloride 1 and NaBr which has a yield of 74.25%. The (1)-N-benzyl)-1,10-phenanthroliniumbromide 4 was synthesized from 1,10-phenanthroline 3 using benzylbromide 2 reagents which refluxed for 8 hours with 84.04% yields. The results of testing in in vitro antiplasmodial activity at chloroquine-resistant Plasmodium falciparum FCR3 strain to (1)-N-benzyl)-1,10- phenanthroliniumbromide 4 has high antimalarial activity (IC50 : 0.10±0.04 µM)
PEMISAHAN Zn MENGGUNAKAN LIGAN ASAM POLI(EUGENOKSI ASETAT) DENGAN METODE EKSTRAKSI CAIR-CAIR La Harimu
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 2 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss2pp103-109

Abstract

Separation of Zn with poly(eugenoxyacetic acid) with liquid-liquid extraction have been counducted in four step that were determination of the optimum pH, determine optimum ligan volume, determine optimum extraction time, and determine optimum Zn concentration. The concentration of Zn in water phase was determined using Atomic Absorption Spectroscopy (AAS). %E is the number that show the effectiveness the extraction proccess. If the %E is bigger, it show that the extraction proccess is effective, and vice versa. The optimum condition for ion separation was occurred at pH 6, the carrier volume was optimum at 5 mL (1 × 10-3 M), the optimum extraction time was 24 hours and the concentration range of metals ion accurately extracted was 1 × 10-4 - 5 x 10-4 M with %E was 97.71%
ADSORPSI ION EMAS(III) DALAM SISTEM MULTILOGAM Au/Ni/Ag Julita Manuhutu; Nuryono Nuryono; Sri Juari Santosa
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 2 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss2pp110-117

Abstract

Sorption of gold(III) ion in multi-metal system Au/Ni/Ag on amino silica hybrid (ASH) column has been studied. ASH was synthesized by sol gel process with sodium silicate (Na2SiO3) from rice husk ash (RHA) as precursor. ASH was synthesized by adding 3M of hydrochloride acid solution to the mixture of (3-aminopropyl)trimethoxysilane and Na2SiO3 solution until pH 7 (neutral). ASH was characterized by infrared (IR) spectroscopy and X-ray diffraction (XRD). Adsorption of multi-metal (Au/Ni/Ag) system was carried out with a column technique. The adsorbed metal ions [Au(III), Ni(II), and Ag(I)] were quantitavely calculated based on the difference of metal ion concentration before and after adsorption analyzed using atomic absorption spectroscopy (AAS). Desorption of Au(III), Ni(II), and Ag(I) from ASH was conducted by using thioruea in hydrochloride solution with variation of concentration. Desorbed metal ions were determined using AAS. The FTIR characterization indicated that ASH was successfully synthesized, as shown with the presence of spesific absorption of functional groups such as silanol (Si-OH), siloxane (Si-O-Si), amino (-NH2), dan methylene (-CH2-). The XRD data showed that the structure of ASH was amorphous. Study of adsorption Au(III) on HSA column indicated that the Au(III) was adsorbed more than the other two metal ions

Page 2 of 17 | Total Record : 164

 1   2   3   4   5 

Filter by Year

2011 2025


Reset
Filter By Issues
All Issue Vol 15 No 2 (2025): MJoCE Vol 15 No 1 (2025): MJoCe Vol 14 No 2 (2024): MJoCe Vol 14 No 1 (2024): MJoCE Vol 13 No 2 (2023): MJoCE Vol 13 No 1 (2023): MJoCE Vol 12 No 2 (2022): MJoCE Vol 12 No 1 (2022): MJoCE Vol 11 No 2 (2021): MJoCE Vol 11 No 1 (2021): MJoCE Vol 10 No 2 (2020): Molluca Journal of Chemistry Education (MJoCE) Vol 10 No 1 (2020): Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 2 (2019): Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 1 (2019): Molluca Journal of Chemistry Education (MJoCE) Vol 8 No 2 (2018): Molluca Journal of Chemistry Education (MJoCE) Vol 8 No 1 (2018): Molluca Journal of Chemistry Education (MJoCE) Vol 2 No 2 (2012): Molluca Journal of Chemistry Education (MJoCE) Vol 2 No 1 (2012): Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 2 (2011): Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 1 (2011): Molluca Journal of Chemistry Education (MJoCE) More Issue