Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Jurnal Kimia (Journal of Chemistry)

jchem
Website

Published by Universitas Udayana

ISSN : 19079850 EISSN : 25992740 DOI : 10.24843/JCHEM

Core Subject : Science,

Chemistry

Jurnal Kimia (Journal of Chemistry) publishes papers on all aspects of fundamental and applied chemistry. The journal is naturally broad in scope, welcomes submissions from across a range of disciplines, and reports both theoretical and experimental studies.

Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)

Articles 13 Documents

1 2

Search results for , issue "Vol. 7, No. 2 Juli 2013" : 13 Documents clear

ISOLASI DAN IDENTIFIKASI SENYAWA TOKSIK PADA EKSTRAK METANOL DAUN GAHARU (Gyrinops versteegii) I Nyoman Mika Adi Santosa; Ida Ayu Raka Astiti Asih; A. A. I. A. Mayun Laksmiwati
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Isolation and identification of toxic compound from methanol extract of eaglewood leaves (Gyrinops versteegii) has been done. Extraction of 869 g of dried eaglewood leaves powder produced concentrated extracts of n-hexane (21.56 g) and methanol (81.85 g). The result of toxicity test for both of concentrated extracts showed methanol extract was the most toxic with LC50 of 39.81 ppm. Partition of methanol extract gained three concentrated extracts in chloroform (2.74 g) , ethyl acetate (3.44 g) and water (15.56 g). The result of toxicity test showed chloroform extract was the most toxic with LC50 of 23.44 ppm. Chloroform extract was then separated and purified by chromatography technique and obtained three toxic fractions namely fraction of A (0.44 g), B (0.22 g) and C (0.13 g). The toxicity test showed that fraction C was the most toxic with LC50 of 34.67 ppm. The phytochemical test result showed that fraction C was belong to triterpene groups. Analysis using UV-Vis spectrophotometer gained 2 peaks at ? 245 nm and ? 416 nm, showing the possibility of the chromophore C=O and C=C, respectively. Analysis using infrared spectrophotometer showed the characteristic absorption of an -OH group, aliphatic CH, C=O and C=C on wave numbers of cm-1 3441.01; 2924.09 (-CH3) and 2854.65 (-CH2); 1743.65; and 1627.92, respectively. According to phytochemical test and spectrophotometry analysis, the isolate of fraction C was supposed to contain triterpene group compounds which has functional groups of OH, aliphatic CH, C=O and C=C.

ADSORPSI KATION Pb(II) DAN Cr(III) OLEH BATU PADAS JENIS LADGESTONE TERAKTIVASI H2SO4 DAN NaOH Novita Rambu Atandawu; Ida Ayu Gede Widihati; I Wayan Suarsa
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Adsorption of Pb (II) and Cr (III) cations by ladgestone activated with 2 N sulfuric acid, and 4 N sodium hydroxide have been studied. The activation aims to increase the adsorption capacity of the ladgestone which was characterized by measuring its specific surface area and the acidity of the ladgestone surface. In addition, equilibrium adsorption time, isotherm adsorption, and the adsorption capacity were also determined using atomic absorption spectrophotometry (AAS). The results showed that activation with 2 N sulfuric acid increased the acidity of ladgestone surface but it decreased the specific surface area, while activation with 4 N sodium hydroxide increased both the acidity and the specific surface area of the ladgestone. Hence, ladgestone activated with 4 N sodium hydroxide gave the highest adsorption capacity both for Pb (II) and Cr (III) which were 12.4976 mg/g and 12.4945 mg/g respectively.

KANDUNGAN LOGAM TOTAL Pb DAN Cu PADA SAYURAN DARI SENTRA HORTIKULTURA DAERAH BEDUGUL G. A. Henny Kurnia Ratnasari; I M. Siaka; Ni G. A. M. Dwi Adhi Suastuti
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

This paper discusses the determination of total metal content of Pb and Cu in vegetables from horticultural center of Bedugul area. Determination of the metals was performed by applying digestion method to the samples. Reverse aqua regia (a mixture of HNO3 and HCl, 3:1) was used to digest the samples in an ultrasonic bath for 45 min at 60° C, followed by heating on a hotplate for 45 minutes at 140oC. Solution resulted from the digestion was analyzed by the use of atomic absorption spectrophotometer (AAS) to determine metal concentrations of Pb and Cu through standard calibration curve. The results showed that Pb and Cu metals accumulated in 6 types of vegetables were varied. It was found that carrots contained the highest Pb (13.7218 mg/kg), while the lowest concentration of Pb was found in cabbage (1.4912 mg/kg). Meanwhile, the highest Cu metal content was found in celery which was 2.8073 mg/kg, but the lowest in sprouts i.e 0.7830 mg/kg.

NILAI DAYA HANTAR LISTRIK, KADAR ABU, NATRIUM, DAN KALIUM PADA MADU BERMERK DI PASARAN DIBANDINGKAN DENGAN MADU ALAMI (LOKAL) Putu Setya Sri Antary; Ketut Ratnayani; A. A. I. A. Mayun Laksmiwati
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Honey sweet substance naturally produced by bees. Good honey must meet the requiremends setby the Indonesian National Standard (SNI). The aim of this research was to determine thequality of some branded honey samples sold in some markets around Denpasar and natural honey (local) collected from beekeepersby examining their electrical conductivities, ash contents, and ratio of potassium to sodium. The electrical conductivities were determinedby applying the standard procedures established by IHC (International Honey Commission), ash contents were quartified by following the procedures of standard SNI01-3545-2004, while the determination of potassium and sodium contents were carried out by the use of Atomic Absorption Spectrophotometry. The results showed that the electrical conductivities and ash contentsin all honey samples studiedmet the maximum limits of standard values which were of 0.8 mS.cm-1 and 0.50 %, respectively. The results also demonstrated that the value of electrical conductivities were proportional to the ash contents. The ratio of sodium to potassium of a good quality honeyis approximately 4 : 1. In this research, it was found that the ratio of Na : K for samples A (natural honey), B, C, and D, were of (3 : 1), (2: 1), (4 : 1), and (4 : 1), respectively, while for sample E was of 8 : 1. It was concluded that A, B, C, and D samples meet the criteria of good quality honey, while sample E (not branded honey) didnot meet the criteria.

PENGARUH SISTEM REKLAMASI AIR LIMBAH TERHADAP KONSENTRASI BOD DAN COD EFFLUENT INSTALASI PENGOLAHAN AIR LIMBAH SUWUNG DENPASAR I D. G. Putra Prabawa; K. G. Dharma Putra; Ni Made Suaniti
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

The application of water reclamation system has been researched for the concentration of Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) in the effluent waste water treatment in Suwung Denpasar. The aims of the research were to determine the effect of each stage of water reclamation system on the BOD5 and COD of the effluent, the effectiveness of the water reclamation system and the quality of the reclaimed water. The results showed that each stage of water reclamation system can decrease the concentrations of BOD5 and COD from waste water treated with different percentage of reduction. The percentages of the COD reduction by first stage (biological filtration systems) were 41.17% and 31.23% respectively BOD5 and COD. The second stage (pre-ozonation system) were 83.13% and 77.68% respectively. Moreover, the third stage (coagulation and membrane systems) reduced 29.25% and 8.02% respectively. The overall rate of effectivenes from the initial to final stages of waste water reclamation were 92,98% for BOD5 and 85,88% for COD.

UJI TOKSISITAS MINYAK ATSIRI DAUN TENGGULUN (Protium javanicum Burm. F.) DENGAN METODE BRINE SHRIMP LETHALITY TEST (BSLT) Ni Luh Putu Putri Setianingsih; I Wayan Suirta; Ni Made Puspawati
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Toxicity of essential oils extracted from young and old leaves of Tenggulun (Protium javanicum, Burm) towards Artemia salina leach larvae has been evaluated using Brine Shrimp Lethality Test and their chemical compositions have been analyzed using Gas Chromatography-Mass Spectrometry (GC-MS). The essential oils were obtained by extracting fresh young and old leaves of Tenggulun using steam distillation method. Steam distillation of young leaves produced oils with 0.06% yield while old leaves yielded 0.07 % oils. The toxicity test results found thatthe essential oils obtained from old leaves were more toxic with LC50 of 15.85 compared to the essential oils of young leaves whose LC50 was 25.12 ppm. GC-MS data revealed that the essential oils of young leaves contained 11 compounds which were : ?-pinene (0.75 %), ?-pinene (0.54 %), delta-3-carene (0.38 %), octatriene (1.35%), trans-?-ocimene (77.63 %), ?-elemene (1.23 %), trans-caryophyllene (12.62 %), ?-humulene (1.18 %), germacrene (3.25 %), ethanone (0.65 %) and isospathulenol (0.42 %) while the essential oils of old leaves composed of 21 compounds whichwere : ?-pinene (0.71 %), ?-pinene (0.44 %), ?-myrcene (0.15 %), cis-ocimene (2.06 %), trans-?-ocimene (52.79 %), trans-caryophyllene (30.02 %), ?-humulene (2.80 %), germacrene (0.28 %), germacrene (4.64 %), ?-farnesene (0.85 %), ?-elemene (0.16 %), tridecatrienenitrile (0.19 %), ethanone (0.49 %), caryophyllene oxide (0.83 %), nerolidol (0.12 %), spathulenol (1.25 %), isospathulenol (1.18 %), kauran (0.30 %), isospathulenol (0.16 %), spathulenol (0.34 %) and ?-farnesene (0.23 %).

AKUMULASI LOGAM KROMIUM (Cr) DALAM SEDIMEN, AKAR DAN DAUN MANGROVE Avicennia marina DI MUARA SUNGAI BADUNG A. A. Sg. Istri A. Suwandewi; Iryanti Eka Suprihatin; Manuntun Manurung
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Research on Cr metal content in the sediment, roots and leaves of the Avicennia marina in estuary of Badung river has been conducted. This study was aimed to determine the ability of Avicennia marina in accumulating chromium from the ecosystem where the plant grows. The concentrations of Chromium were determined by the use of Atomic Absorption Spektrcophotometer followed by a calibration standard method. The results showed that the roots of the Avicennia marina accumulated Cr metal most. Total concentrations of Cr metal in leaves was 0,9579 mg/kg and in the roots was 1,9680 mg/kg, while in the sediment 0,4536 mg/kg. Based on the amount of metal accumulation in the roots and leaves of mangrove, it can be suggested that the Avicennia marina was capable of accumulating Cr present in the ecosystem.

SPESIASI DAN BIOAVAILABILITAS LOGAM TEMBAGA (Cu) PADA BERBAGAI UKURAN PARTIKEL SEDIMEN DI KAWASAN PANTAI SANUR Kristina Indra Yanthy T; Emmy Sahara; I G. A. Kunti Sri Panca Dewi
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

A research on bioavailability and speciation of Cu in various sediment particle sizes collected from three sampling sites namely, Sanur, Sindhu and Mertasari Beaches along Sanur Beach was carried out. This study was aimed to determine the fractions of Cu available for aquatic organism and the geochemical forms of Cu in the sediments. Samples pretreatment were carried out by digestion with the use of the mixture of HNO3 and HCl (3:1). The bioavailability and speciation were accomplished by the appliation of single exraction (with EDTA and HCl ) and sequential extraction techniques. Generally, it was found that EDTA extraction yielded higher bioavailability than that of HCl extraction. The highest bioavailability of Cu was showed by the sediment from Sanur Beach and Sindhu Beach at particle size of < 63 µm and from Mertasari Beach at particle size of 63-106 µm. From Cu speciation results it was found that the bioavailable (fractions of easily, freely, leachable, and exchangeable (EFLE), Fe/Mn oxide, organic and sulphide) and the resistant fractions were as follows: Sanur Beach at particle size of <63 µm were 8,28% and 10,31%, particle size of 63-106 µm were 5,34% and 9,13%, and particle size of >106 µm were 18,07% and 5,26%. Sindhu Beach at particle size of <63 µm were 17,32% and 15,69%, particle size of 63-106 µm were 6,98% and 9,92%, and particle size of >106 µm were 7,28% and 7,77%. Mertasari Beach at particle size of <63 µm 8,85% and 11,79%, particle size of 63-106 µm were 13,33% and 20,85%, and particle size of >106 µm were 17,99% and 38,42%.

POTENSI TOKSISITAS NEUROLOGIS VINKRISTIN PADA TUBUH YANG TERJADI PADA ANAK DENGAN LEUKEMIA LIMFOSITIK AKUT Ni Made Intan Pertiwi; Ketut Ariawati; Rasmaya Niruri; Rini Noviyani; A.A. Raka Karsana; Mahardika Aprilia Iflahah
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Acute Lymphoblastic Leukemia (ALL) treatment are chemotherapeutic agent and bone marrow transplantation. Treatment with chemotherapeutic agent is the primary curative for leukemia. Vincristine is one of chemotherapeutic agents in ALL. Neurotoxicity is one of the toxicity caused by vincristine. The objective of this study was to find out the potential neurotoxicity of vincristine in children with ALL. Method: This study was observational design. The study was conducted at Sanglah Hospital Denpasar. Patient data was collected from May 2011- March 2013 period. Result: Seventeen patients who fit to the sample criteria were got. Of the 17 childhood with ALL who have treatment with chemotherapeutic agent based on Indonesian Protocol 2006, 3 patients showed neurotoxicity. Patients may suffered from leg pain, foot pain, and walking pain. Conclusion: There are potential neurotoxicity vincristine in children with ALL who have treatment with chemotherapeutic agent. Potential neurotoxicity can be caused by mechanism of action vincristine in microtubules.

STUDI REAKSI SIKLOPENTILSILAN DENGAN 4-IODIDA THIOANISOL MENGGUNAKAN KATALIS PALADIUM Aldes Lesbani; Risfidian Mohadi; Elfita Elfita
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

A study on cyclopentylsilane reaction in tetrahydrofuran with 4-iodo thioanisol has been carried out using palladium as catalyst under argon atmosphere at room temperature. The results showed that the product was tris(4-thioanisyl)cyclopentylsilane (1) which was obtained from recrystallization using methanol with the yield 35%. The Compound (1) has a melting point of 91.5-92.0 oC. Analysis using GC-MS found m/z 466 with six equivalent protons and eight carbons peak obtained from 1H and 13C NMR.

Page 1 of 2 | Total Record : 13

1 2

Filter by Year

2013 2013

Filter By Issues

All Issue Vol. 18, No.2, Juli 2024 Vol. 18, No.1, Januari 2024 Vol. 17, No.2, Juli 2023 Vol. 17, No.1, Januari 2023 Vol. 16, No.2, Juli 2022 Vol. 16, No.1, Januari 2022 Vol. 15, No.2, Juli 2021 Vol. 15, No.1, Januari 2021 Vol. 14, No. 2 Juli 2020 Vol.14 No.1 Januari 2020 Vol.13 No.2 Juli 2019 Vol.13 No.1 Januari 2019 Vol.12 No.2 Juli 2018 Vol. 12 No.1 Januari 2018 Vol. 11. No.2 Juli 2017 Vol. 11. No. 1 Januari 2017 Vol. 10, No. 2 Juli 2016 Vol. 10, No. 1 Januari 2016 Vol. 9, No. 2 Juli 2015 Vol. 9, no. 1 Januari 2015 Vol. 8, No. 2 Juli 2014 Vol. 8, No. 1 Januari 2014 Vol. 7, No. 2 Juli 2013 Vol. 7, No. 1 Januari 2013 Vol. 6, No. 2 Juli 2012 Vol. 6, No. 1 Januari 2012 Vol. 5, No. 2 Juli 2011 Vol. 5, No. 1 Januari 2011 Vol. 4, No. 2 Juli 2010 Vol. 4, No. 1 Januari 2010 Vol. 3, No. 2 Juli 2009 Vol. 3, No. 1 Januari 2009 Vol. 2, No. 2 Juli 2008 Vol. 2, No. 1 Januari 2008 Vol. 1, No. 2 Juli 2007 Vol. 1, No. 1 Januari 2007 More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Ni Putu Diantariani

Contact Email
jurnalkimia@unud.ac.id

Phone
+628123640424

Journal Mail Official
jurnalkimia@unud.ac.id

Editorial Address
Program Studi Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana Kampus Bukit Jimbaran, Jimbaran, Bali, Indonesia

Location
Kota denpasar,

Bali

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Ni Putu Diantariani

Contact Email jurnalkimia@unud.ac.id

Phone +628123640424

Journal Mail Official jurnalkimia@unud.ac.id

Editorial Address Program Studi Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana Kampus Bukit Jimbaran, Jimbaran, Bali, Indonesia

Location Kota denpasar, Bali INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Ni Putu Diantariani

Contact Email
jurnalkimia@unud.ac.id

Phone
+628123640424

Journal Mail Official
jurnalkimia@unud.ac.id

Editorial Address
Program Studi Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana Kampus Bukit Jimbaran, Jimbaran, Bali, Indonesia

Location
Kota denpasar,

Bali

INDONESIA