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Yeanchon H. Dulanlebit
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Gedung Jurusan Pendidikan MIPA FKIP Lt. 2 Program Studi Pendidikan Kimia Jl. Ir. M. Putuhena, Kampus Universitas Pattimura Poka-Ambon, Maluku, Indonesia
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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 165 Documents
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REMEDIASI ELEKTROKINETIK TERHADAP LOGAM-LOGAM BERAT MENGGUNAKAN ELEKTRODA 2-D HEXAGONAL PADA TANAH DARI TEMPAT PEMBUANGAN AKHIR (TPA) TOISAPU AMBON Noke Kesaulya; Yuli T Filindity
Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 2 (2019): 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/MJoCEvol9iss2pp90-98

Abstract

The Electrokinetic Remediation process for soil using 2-D hexagonal electrode has been done with observing pH and concentration of heavy metals, such as Hg, Zn and Pb of soil before, during and after processing the electrokinetic. Results of research indicated that contents of soil in Hg metal ions were 1.088 ppm; Zn =0.135 ppm and Pb, 0.115 ppm. Concentration of the metal ions was different to each time because rubbish in TPA was also different. Process efficiencies for Hg were 24.78 %; Zn, 33.71 % and Pb, 10.13 %. Efficiency process of electrokinetic remediation was highly influence by distance of cathode and duration of remediation process. Closer distance from cathode, time taken for remediation process was shorter, also the opposite
ANALISIS KOMPOSISI ASAM LEMAK PADA MINYAK KELAPA FERMENTASI DAN MINYAK KELAPA TRADISIONAL Fatma Al-Hamid; J Leiwakabessy; A Bandjar
Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 2 (2019): 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/MJoCEvol9iss2pp99-108

Abstract

Analysis of fatty acid in ferment coconut oil and traditional coconut oil has been concluded by GC-MS. The result of analysis in ferment coconut oil yiels four kinds of fatty acid that are (1). Laurate acid (methyl dodekanoat) 39,13%, (2). Myristate acid (methyl tetradekanoat) 13,78%, (3). Palmitate acid (methyl heksadekanoat) 6,60%, and (4). Oleate acid (Methyl 9-oktadekanoat) 4,81%. While traditional coconut oil yiels five kinds of fatty acid, that are (1). Laurate acid (methyl dodekanoat) 44,83%, (2). Myristate acid (methyl tetradekanoat) 22,83, (3). Palmitate acid (methyl heksadekanoat) 12,82%, (4). Oleate acid (Methyl 9-oktadekanoat) 11,16%, and (5) Stearate acid (Methyl oktadekanoat) 3,90%. Stearate acid is none in ferment coconut oil because it lost used by khamir. Traditional coconut oil is better than ferment coconut oil in number and kind of fatty acid. But from the physic character like number of oil, time cook, and face, ferment coconut oil is better. Method made is influence to compound of fatty acid. In other research, it’s important to find the optimal condition procces for khamir fermentation. People may eat traditional coconut oil cos it have some fatty acid that important for human body
ANALISIS KOMPONEN ASAM LEMAK DAN MINERAL (Ca, Mg, Fe, Zn) IKAN KAKAP PUTIH (Lates calcalifer) Nazudin Nazudin; Hernina Wattimena
Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 2 (2019): 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/MJoCEvol9iss2pp109-115

Abstract

ABSTRACT The analysis of fatty acid component and mineral composition (Ca, Mg, Fe, Zn) of white snapper fish (Lates calclifer) had been done. Flesh of white snapper fish (Lates calclifer) was extracted with petroleum benzene and obtained 6.06% of oil. Oil fish was transesterified by using BF3 – methanol 20%. The result of transesterification was analysed by using and GC-MC obtained nine fatty acid component, those were myristic acid methyl ester 5.94%; pentadecanoic acid methyl ester 1,58%; palmitoleic acid methyl ester 8.73; palmi acid methyl ester 17.69; Margarate acid methyl ester 1.96%; linoleic acid methyl ester 1.56%; oleic acid methyl ester 15.83%; streaic acid methyl ester 10.41%; aracidonic acid methyl ester 5.26%. the result of minerals composition analysis used atom absorption spectrophotometer (ASS) showed that the content of calcium (Ca), Magnesium (Mg), ferrum (Fe), zinc (Zn), were 51,1 mg/kg; 574 mg/kg; 65 mg/kg; and 10,8 mg/kg, respectively. Oil of white snapper fish (Lates calcalifer) contains esensial fatty acid that is benefit to humans body. In the another hand, it also contains mineral content which is enough that it is goof to be consumend by the people.
ANALISIS KADAR MERKURI (Hg) PADA BADAN AIR DI BEBERAPA TITIK SUNGAI WAIAPU KABUPATEN BURU Abraham Mariwy; Yati Tuasamu; Warinah Warinah
Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 2 (2019): 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/MJoCEvol9iss2pp116-122

Abstract

Merkuri dan turunannya telah lama diketahui sangat beracun sehingga kehadirannya di lingkungan perairan dapat mengakibatkan kerugian pada manusia karena sifatnya yang mudah larut dan terikat dalam jaringan tubuh organisme air. Selain itu pencemaran merkuri mempunyai pengaruh terhadap ekosistem setempat yang disebabkan sifatnya yang stabil dalam sedimen, kelarutannya yang rendah dalam air dan kemudaahannya diserap dan terakumulasi dalam jaringan tubuh organisme air, baik melalui proses bioakumulasi maupun biomagnifikasi yaitu melalui rantai makanan. Penelitian ini dilakukan untuk menentukan kadar logam berat merkuri (Hg) pada badan air dari sungai Waiapu Pulau Buru. Hal ini sangat penting dilakukan karena selama ini sungai tersebut menjadi tempat pembuangan limbah sisa pengolahan emas secara tradisional menggunakan tromol.Tahap penelitan lapangan meliputi pengukuran parameter fisika dan kimia serta pengambilan sampel dilakukan pada bulan Juli 2015. Sampel air sungai kemudian dikirim ke Laboratorium Kimia Universitas Muhamadiyah Malang untuk pengukuran kadar merkuri menggunakan AAS dengan teknik kurva kalibrasi. Hasil penelitian menunjukkan bahwa kadar merkuri pada tiga lokasi sampel yaitu A B dan C masing-masing adalah: 1,392 ppm, 1,5912 ppm dan 3,1975 ppm telah melampaui standar yang ditetapkan oleh pemerintah melalui keputusan Menteri Lingkungan Hidup RI Nomor 115 tahun 2003 yaitu ambang batas merkuri (Hg) pada air golongan C adalah 0,002 ppm.
ANALISIS METODE CHEATING PADA TES BERSKALA BESAR Yance Manoppo; Djemari Mardapi
Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 2 (2019): 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/MJoCEvol9iss2pp133-146

Abstract

This study aimed to reveal: (1) the characteristics of items of Chemistry Test in National Examination by using the classical test theory and item response theory; (2) the amount of cheating which occured by using Angoff's B-index Method, Pair 1 Method, Pair 2 Method, Modified Error Similarity Analysis (MESA) Method, and G2 Method; (3) the methods that detect more cheating in the implementation of the Chemistry Test in National Examination for high schools in the year 2011/2012 in Maluku Province. The results of the analysis with the classical test theory approach show that 77.5% items have item difficulty functioning well, 55% items have discrimination yet qualified and 70% items have distractor that works well with the index reliability test of 0,772. The analysis using the item response theory approach shows that 14 (35%) items fit with the model, the maximum function information is 11,4069 at θ = -1,6, and the magnitude of the error of measurement is 2,296. The number of pairs who are suspected of cheating is as follows: 13 pairs according to Angoff's B-index Method, 212 pairs according to Pair 1 Method, 444 pairs according to Pair 2 Method, 7 pairs according to MESA Method, and 102 pairs according to G2 Method. The most widely detecting cheating in a row is a Pair 2, Pair 1, G2, Angoff's B-index, and MESA.
ANALISIS KOMPONEN ASAM AMINO IKAN LAYANG DELES (Decapterus Makrosoma) HASIL OLAHAN TRADISIONAL BERDASARKAN LAMA PENYIMPANAN Vhindra Engson Lumamuly; Nikmans Hattu; Semuel Unwakoly
Molluca Journal of Chemistry Education (MJoCE) Vol 9 No 2 (2019): 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/MJoCEvol9iss2pp123-132

Abstract

The aim of this study was to determine the amino acid composition of traditional processed Layang Deles fish (Decapterus macrosoma) which was stored for 2 months. Analysis of amino acid content using by Ultra Performance Liquid Chromatography (UPLC) instrument after content of water and lipid in sample was removed. The results of the analysis showed that there was a change in the concentration of 15 amino acids measured ranging from 85.17% to 2,873.42% in acid hydrolysis and 88.18% to 28.73% in alkaline hydrolysis. The biggest changes occurred in histidine, arginine and serine amino acid concentrations of 2,873.42%, 2,606.74% and 900.00% in acid hydrolysis and in amino acids serine, aspartic acid and histidine which were 88.17%, 62, 99% and 40.02% in alkaline hydrolysis. Based on the results of the research, it can be concluded that the processing of inmana fish with a storage period of 2 months affects the amino acid components of Layang Deles fish (Decapterus macrosoma).
IMPLEMENTASI METODE PEMBELAJARAN INKUIRI PADA MATERI KIMIA RUMAH TANGGA TERHADAP PEMAHAMAN KONSEP SISWA SMP NEGERI I PULAU-PULAU ARU Fatma Al Hamid
Molluca Journal of Chemistry Education (MJoCE) Vol 8 No 1 (2018): 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/MJoCEvol8iss1pp1-6

Abstract

Research aimed to know how the improvement of student concept understanding after process instruction using learning method inquiry. Research type deskriptive is choosen with design of learning package use one group pretest-posttest desing. Sample of this research are 33 students class VIII of SMP Negeri I Pulau-pulau Aru in academic year 2014/2015. Instrument of this research is test to examine student concept understanding, which is pretest and posttest. Data analyse with descriptive statistic show that the average of student pretest is 41,51%, the average of student postest is 85,45%, so the average gain of student concept understanding is 0,72 which show that the gain is avaliable in high gain cateogories. Based on data analyse and discussion, can be concluded that method learning inquiry is effective for use in instruction to improve student concept understanding in chemistry household matter
IMPLEMENTASI METODE PEMBELAJARAN INKUIRI PADA MATERI KIMIA RUMAH TANGGA TERHADAP PEMAHAMAN KONSEP SISWA SMP NEGERI I PULAU-PULAU ARU Al Hamid, Fatma
Molluca Journal of Chemistry Education (MJoCE) Vol 8 No 1 (2018): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Prodi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol8iss1pp1-6

Abstract

Research aimed to know how the improvement of  student concept understanding  after process instruction using learning method inquiry. Research type deskriptive is choosen with design of learning package use one group pretest-posttest desing. Sample of this research are 33 students class VIII of SMP Negeri I Pulau-pulau Aru in academic year 2014/2015. Instrument of this research is test to examine student concept understanding, which is pretest and posttest. Data analyse with descriptive statistic show that the average of student pretest is   41,51%, the average of student postest is 85,45%, so the average gain of student concept understanding is 0,72 which show that the gain is avaliable in high gain cateogories. Based on data analyse and discussion, can be concluded that  method learning inquiry is effective for use in instruction to improve student concept understanding in chemistry household matter
WAKTU KONTAK DAN pH OPTIMUM SISA BUANGAN BATU BATA TERAKTIVASI di-(2-ethylhexcyl) phosphate acid (D2EHPA,) SEBAGAI PENJERAP Pb 2+ Eirene Grace Fransina; Jolantje Latupeirissa; Quendeline Stefanus
Molluca Journal of Chemistry Education (MJoCE) Vol 8 No 1 (2018): 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/MJoCEvol8iss1pp7-11

Abstract

Determination of optimum pH and contact time, of broken brick from Latuhalat village as adsorbent of Pb2+ through impregnation with di-(2-ethylhexcyl) phosphate acid (D2EHPA) has been done. Bricks impregnated with di-(2-ethylhexcyl) phosphate acid concentration of 700 ppm to enlarge the surface area of ​​adsorption on bricks. The result of analysis using AAS show that optimum contact time is 3 hours, optimum pH is 8, with weight of adsorbent is 0,2 g, adsorbate concentration is 100 ppm and adsorption capacity is 49,9985 mg/g adsorbent.
WAKTU KONTAK DAN PH OPTIMUM SISA BUANGAN BATU BATA TERAKTIVASI DI-(2-ETHYLHEXCYL) PHOSPHATE ACID (D2EHPA,) SEBAGAI PENJERAP PB 2+ Fransina, Eirene Grace; Latupeirissa, Jolantje; Stefanus, Quendeline
Molluca Journal of Chemistry Education (MJoCE) Vol 8 No 1 (2018): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Prodi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol8iss1pp7-11

Abstract

Determination of optimum pH and contact time, of broken brick from Latuhalat village as adsorbent of Pb2+ through impregnation with di-(2-ethylhexcyl) phosphate acid (D2EHPA) has been done. Bricks impregnated with di-(2-ethylhexcyl) phosphate acid concentration of 700 ppm to enlarge the surface area of ??adsorption on bricks. The result of analysis using AAS show that optimum contact time is 3 hours, optimum pH is 8, with weight of adsorbent is 0,2 g, adsorbate concentration is 100 ppm and adsorption capacity is 49,9985 mg/g adsorbent.

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