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NOOR HUBDRYAWATI
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Jurnal Kimia Mulawarman
Published by Universitas Mulawarman
ISSN : 16935616     EISSN : 24769258     DOI : DOI: https://doi.org/10.30872/jkm
Core Subject : Science,
Chemistry
Journal of Kimia Mulawarman is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry, including educational chemistry and applied chemistry.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 224 Documents
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SINTESIS SURFAKTAN DIETANOLAMIDA DARI METIL ESTER MINYAK BIJI BUNGA MATAHARI (Helianthus annuus. L) MELALUI REAKSI AMIDASI Nur Khsanah; Daniel Daniel; Eva Marliana
JURNAL KIMIA MULAWARMAN Vol 16 No 2 (2019)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v16i2.875

Abstract

Synthesis of dietanolamide surfactant from methyl ester of sunflower seed oil (Helianthus annuus. L) has been carried out through an amidation reaction. The synthesis process includes extraction, esterification and amidation. In the extraction process showed the oil content of sunflower seeds was 32.93% with an acid number of 3.25 mg KOH/g and ALB levels of 1.63%. Sunflower seed oil was then converted to methyl ester through the esterification process and obtained an acid number 1.84 mg KOH/g so that the ALB level dropped to 0.92% and obtained saponification numbers of 61.19 mg KOH/g. The most dominant composition of methyl ester of sunflower seed oil based on GC-MS analysis was methyl oleate at 23.28%. The FT-IR methyl ester spectrum gives a specific absorption peak for group C=O ester at wave number 1743 cm-1. Methyl esters are converted to diethanolamide through an amidation process. The resulting diethanolamide has an acid number of 9.7 mg KOH/g and a saponification number of 3.08 mg KOH/g. The FT-IR spectrum provides specific absorption peaks for groups C=O amides at wave numbers 1622 cm-1 and C-N at wave numbers 1055 cm-1. The value of HLB dietanolamide in practice is 13.6495 and in theory is 14.291 which includes the surfactant in the oil in water (O/W) emulsifying class.
Analisis Kadar Ion Pb2+ Pada Kangkung Darat (Ipomea Reptans Poir) Yang Diberi Air Lindi Dari Tpa Sampah Bukit Pinang Samarinda Hamsina Hamsina; Bohari Yusuf; Erwin Erwin
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i1.545

Abstract

The Research to determine the levels of Pb ion on swamp cabbage (Ipomoea reptans Poir) where each of media cropping given variation of leachate volume from TPA Bukit Pinang Samarinda for every 10 kg of soil has been carried out. Swamp cabbage was analyzed in the roots, stems and leaves at the age of 2 weeks to 4 weeks. The levels of Pb2+ ion was determined by dry destruction method, then measured by atomic absorption spectrophotometry. Pb2+ ion was accumulated on the ground kale plants. The highest levels of Pb2+ ion was contained in the roots of ground kale plants on media cropping which added 1.5 L of leachate at the age of 3 weeks of 2.0642 mg / kg wet weight. The lowest level of Pb2+ ion was contained in the leaves of control plants at the age of 2 weeks that was 0.0177 mg / kg wet weight.
PENGARUH BERAT DAN WAKTU KONTAK UNTUK ADSORPSI TIMBAL(II) OLEH ADSORBEN DARI KULIT BATANG JAMBU BIJI (Psidium guajava L.) Sri Lestari
JURNAL KIMIA MULAWARMAN Vol 8 No 1 (2010)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Research about influence of weight and contact times of to adsorb lead(II) by adsorbent from bark of guava has been done. The research was varied by series of adsorbent weight 0.5; 1.0; 1,5; 2.0; 2.5; and 3.0 gram and the contact time 30, 60, 90, 120, 150, and 180 minutes. Concentration of lead(II) in sample is measured by atomic absorption spectrophotometer. The result showed that optimum contact time is 90 minutes. It was also found that higher adsorbent weight will increase the total amount of adsorbed lead(II).Keywords: Adsorption, lead(II), bark, guava
PENENTUAN KUALITAS AIR SUMUR BOR DI DAERAH MARANGKAYU KABUPATEN KUTAI KARTANEGARA Yessy Parasamya Anggraini; Marlon Ivanhoe Aipassa; Aman S. Panggabean
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v17i2.912

Abstract

The research about determination of the quality of drilled water wells in the area of Marangkayu, Kutai Kertanegara district has been conducted. The quality of the wellbore produced can be done by determining the number of several important parameters of the wellbore’s groundwater quality of groundwater wells produced by the Director General of SDA Ministry of PUPR and community groundwater wells in the coastal area of Marangkayu, whether it meets the requirements of the Republic of Indonesia Minister of Health Regulation No. 32/2017 concerning Environmental Health Standard Quality Standards and Water Health Requirements for Sanitation Hygiene. The results of the research showed that the government drilled water and community well drilled water met the quality standards in accordance with the Republic of Indonesia Ministerial Regulation No. 32/2017, except for E. Coli and Total Coliform contents are quite high, exceeding the quality standards of water sample inspection results.
Sintesis dan Uji Senyawa 3,3’-dihidroksi-4,4’-dimetoksidibenzilidenaseton sebagai Bahan Aktif Tabir Surya dan Antioksidan Harizal Harizal; Ariyo Prabowo Hidayanto; Nindya Wulan Sari
JURNAL KIMIA MULAWARMAN Vol 16 No 1 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v16i1.665

Abstract

Synthesis and preliminary evaluation of 3,3’-dihydroxy-4,4’-dimethoxydibenzylidenacetone (DDB) as sunscreen and antioxidant have been successfully conducted. The compound was prepared throught acid catalyzed condensation reaction between vanillin and aceton using saturated HCl solution in glacial acetic acid. Pre-evaluation of sunscreen active compound candidate was performed by determining electronic absorbance profile, lamdamax, e, lamda c, UVA/UVB ratio, and photostability. While antioxidant activity test was performed using DPPH radical scavenger method. Based on the results obtained, the compound obtained has very good protective effect in UVA regions with high antioxidant activity.
Optimasi Suhu Reaksi Transesterifikasi Pada Minyak Jerami Padi (Oryza sativa L.) Menjadi Biodiesel Dengan Menggunakan Katalis CaO Dari Kulit Telur Ayam) Tasik Sinta; Daniel Tarigan; Chairul Saleh
JURNAL KIMIA MULAWARMAN Vol 14 No 1 (2016)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The research on optimization of transesterification temperature for production of biodiesel from rice straw oil (Oryza sativa L.) using CaO catalyst derived from the chicken egg skin has been conducted. Production of biodiesel was conducted at varied temperatures, namely 30oC, 40oC, 50oC, 60oC and 70oC. The fatty acid compositions of the transesterification products were determined by using GC-MS and the physical and chemical characteristics were determined using SNI Methods 04-7182-2006. The AAS result suggested that the chicken egg skin contained 91.41% CaO. The optimum transesterification temperature was 60oC producing 90,8405% methyl ester. The results of GC-MS showed that the highest percentage of fatty acid was methyl oleic (44.56%).
Korelasi Kadar Total Logam Pb Terhadap Kadar Protein Pada Udang Putih (Penaeus marguiensis) Yang Diambil Dipesisir Pulau Bunyu Kalimantan Utara Rudi Kartika
JURNAL KIMIA MULAWARMAN Vol 14 No 2 (2017)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Research on "Correlation levels of Pb to the total protein content in the white shrimp (Penaeus merguiensis) taken around the coast of North Borneo Bunyu Island". This study aims to determine the total concentration of Pb and protein levels in white shrimp by size and sampling different regions. then the total levels of Pb and protein correlated with Least Square method. Analysis of Pb total metal content by using AAS (Atomic Absorption Spectrophotometer) and analysis of protein content using the Kjeldahl method. In this study, the levels of Pb total in area 1 with an average of 0,738 mg/L, the levels of Pb total in area 2 with an average of 0.926 mg/L, the levels of Pb total area 3 with an average of 0,841 mg/L. The protein content of white shrimp in area 1 with an average of 27,8644%, protein content in area 2 gained an average of 29,0333% and 3 area gained an average protein content of 27,8635%. Correlation levels of Pb total the protein content of the white shrimp (Penaeus merguiensis) r = 0.877
PREDIKSI PUNCAK KEMATANGAN BUAH NAGA MELALUI PENGUKURAN GULA REDUKSI DENGAN METODE NELSON-SOMOGYI Alimuddin -
JURNAL KIMIA MULAWARMAN Vol 9 No 2 (2012)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Prediction of dragon fruit maturation peak by measuring reductor sugar with nelson-somogyi method have been done. Prediction was done by using three modes which are experimental result, regression model and first derivation. Age of the fruit which used in this research were 1, 3, 5 and 7 weeks old. Based on the result of this research can be concluded that maturation peak of dragon fruit happens at between 5 until 6 weeks old.Keywords: Dragon Fruit, Reductor Sugar and Nelson-Somogyi Method.
UJI FITOKIMIA DAN AKTIVITAS ANTIBAKTERI DARI TANAMAN MERKUBUNG (Macaranga gigantea (Rchb.f. & Zoll) Mull. Arg.) DENGAN EKSTRAK TOTAL, FRAKSI n-HEKSANA, ETIL ASETAT DAN ETANOL AIR TERHADAP BAKTERI Escherichia coli dan Staphylococcus aureus Azhar Seli Apriani; Chairul Saleh; Alimuddin -
JURNAL KIMIA MULAWARMAN Vol 12 No 1 (2014)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Phytochemical tests, mortality of larvae shrimp (brine shrimp lethality test) and the antibacterial activity of theleaf merkubung (Macaranga gigantea Rchb.f. & Zoll.) With various factions has been conducted. Merkubung leafsamples were extracted with ethanol and concentrated by using rotary evaporator. The total extract was fractionatedwith n-hexane and ethyl acetate. The results of phytochemical compounds secondary metabolites merkubung leavesshowed that the total extract are contains alkaloids, phenolics and steroids. n-hexane fraction are containing alkaloids,flavonoids and steroids. Ethyl acetate faction are containing flavonoids and steroids. Ethanol-water faction is containingphenolic compounds. Shrimp larvae mortality trials showed mortality rates of larvae of Artemia salina (L) by usingSAS Probit analysis to determine the value of Lethal Concentration 50 % (LC50). The test shows that the most toxicfraction is the total extract with LC50 values of 459.8414 ppm. The test of antibacterial activity using paper disc methodand shows that the most active faction is the total extract with a MIC (Minimmum Inhibitor Concentration) of 1 % is6.5 mm diameter clear zone on Staphylococcus aureus (Gram positive) and 6.25 mm in the bacterium Escherichia coli(Gram negativ).Keywords : Macaranga gigantea Rchb.f. & Zoll., phytochemical test, Antibacteria activity test, LC50.
SINTESIS SELULOSA ASETAT DARI TANDAN KOSONG KELAPA SAWIT DAN SIFATNYA SEBAGAI MEMBRAN POLIMER ELEKTROLIT PADA BATERAI ION LITIUM Nurhadini Nurhadini; I Made Arcana
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.612

Abstract

Biodegradable polymer electrolyte utilization on lithium ion battery is increasingly considered to prevent any waste. This study was conducted to synthesis cellulose acetate from oil palm empty fruit bunch and its properties as polymer electrolyte membranes on lithium ion battery. This study was done by extracting cellulose from oil palm empty fruit bunch. That cellulose was acetylated become cellulose acetate and characterized its functional group. Further, polymer electrolyte was synthesized with composition 25/60/15(%b/b) (SAS/PEO/LiClO4). The properties of polymer electrolyte membranes were characterized by analysis thermal properties, ionic conductivity and mechanical properties. Based on functional group data, synthetic cellulose acetate had similar the main functional group with commercial cellulose acetate. Synthetic cellulose acetate contained 27% acetyl with 1,4 substitution degree. Analysis thermal properties showed that the decomposition of SAS/PEO/LiClO4 polymer electrolyte membranes was started above 260oC. The ionic conductivity 10,81 x 10-4 S/cm of these polymer electrolyte membranes was 10,81 x 10-4 S/cm. Analysis of mechanic properties were 0,05 MPa stress, 14,23 MPa elongation and 0,35 MPa Modulus Young. SAS/PEO/LiClO4 polymer electrolyte membranes had higher ionic conductivity than SAK/PEO/LiClO4 polymer electrolyte membranes. However, SAS/PEO/LiClO4 polymer electrolyte membranes had lower thermal and mechanic properties than SAK/PEO/LiClO4 polymer electrolyte membranes.

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