Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

The Journal of Pure and Applied Chemistry Research

jpacr
Website

Published by Universitas Brawijaya

ISSN : 23024690 EISSN : 25410733 DOI : http://dx.doi.org/10.21776/ub.jpacr

Core Subject : Health, Science, Engineering,

Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology Medicine & Pharmacology

The Journal of Pure and Applied Chemistry Research focuses in publishing research articles in the field of Chemistry and Applied Chemistry. The target is in exploring, investigating, and developing chemicals sources from local and/or Indonesian to increase the value. Scope of the journal is organic chemistry, analytical chemistry, inorganic chemistry, biochemistry, and physical chemistry. Included the topic also organic chemistry natural product, theoretical and computational chemistry.

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

Articles 6 Documents

Search results for , issue "Vol 4, No 1 (2015)" : 6 Documents clear

Mild and Efficient Reagents for Oxidation of Alcohols: [MeOCH2(Ph)3P]+[CrO3X]ֿ, (X=F, Cl) Amir Lashgari; Shahriar Ghamami
The Journal of Pure and Applied Chemistry Research Vol 4, No 1 (2015)
Publisher : Chemistry Department, The University of Brawijaya

Two fast, mild, and reasonable oxidizing agents, Methoxymethyltriphenylphosphonium Halochromates (VI), [MeOCH2(Ph)3P]+ [CrO3X]ֿ (MMTriPPXC) are synthesized. The preparations of Methoxymethyltriphenylphosphonium Halochromates are new and efficient reagents for the oxidation of primary and secondary alcohols to their corresponding carbonyl compounds in dichloromethane at ambient temperature. These are obtained with relatively short reaction times. The oxidants/substrates ratios of 1:1 are employed.

Determination of Hydroquinone in a Square Wave Voltammetry based on Screen Printed Carbon Electrode Alfita Safitri; Ani Mulyasuryani; Rachmat Triandi Tjahjanto
The Journal of Pure and Applied Chemistry Research Vol 4, No 1 (2015)
Publisher : Chemistry Department, The University of Brawijaya

Hydroquinone is a phenolic compound are often used extensively in the cosmetics industry as whitening agent. This compound is very toxic and their use should be monitored. Due to the impact of hydroquinone, the use of hydroquinone restricted by BPOM (Food and Drug Regulatory Department in Indonesia) maximum by 0.02%. The aim of this study was to establish a new simple sensitive voltammetry method for determination of hydroquinone using screen printed carbon electrode (spce). In this study, linear concentration range, limit of detection, sensitivity and accuracy were investigated. Before the determination of parameters analysis, the method require the optimization of method parameters such as frequency and pulse height. This study were showed that the measurement of hydroquinone with square wave voltammetry method has linear concentration range 1 - 100µM, limit of detection 23.4µM, sensitivity 0.075µM/µA and accuracy 0.9969. The proposed method was succesfully applied in whitening cream cosmetic samples with good enough results.

Catalytic Desulfurization of Benzothiophene Using Keggin Type Polyoxometalates as catalyst Aldes Lesbani; Arianti Marpaung; Marieska Verawaty; Hesti Rizki Amalia; Risfidian Mohadi
The Journal of Pure and Applied Chemistry Research Vol 4, No 1 (2015)
Publisher : Chemistry Department, The University of Brawijaya

Performance of catalytic desulfurization of benzothiophen (BT) was studied using polyoxometalates as catalyst. Polyoxometalates H3[a-PW12O40] and H4[a-SiW12O40], have different heteroatom in Keggin structure and catalytic activities. Polyoxometalates H3[a-PW12O40] and H4[a-SiW12O40] have high crystallinity with homogeneous distribution particles. Desulfurization of BT using polyoxometalates H3[a-PW12O40] and H4[a-SiW12O40] resulted % conversion up to 99% for 3 h reaction time and at temperature 40 oC. Application of polyoxometalates H3[a-PW12O40] and H4[a-SiW12O40] for crude oil desulfurization showed % conversion of 4-88%. The main functional groups of polyoxometalates still retained after catalytic desulfurization indicated the stability of polyoxometalate compounds

Influence of Dye Adsorbtion Time on TiO2 Dye-Sensitized Solar Cell with Krokot Extract (Portulaca Oleracea. L) as A Natural Sensitizer. Didik Krisdiyanto; Siti Khuzaifah; Khamidinal Khamidinal; Endaruji Sedyadi
The Journal of Pure and Applied Chemistry Research Vol 4, No 1 (2015)
Publisher : Chemistry Department, The University of Brawijaya

Dye sensitized solar cells (DSSC) photoelectrodes were fabricated using titanium oxide (TiO2) and sensitized with the krokot extract dye. This study investigated the effect of dye adsorbtion time to an efficiency of the solar cells. The fabrication cells immersed with krokot extract dye for 1, 8 and 26 hours. The photochemical performance of the DSSC showed that the open circuit voltage (Voc) were 0.33, 0.036 and 0.27 V with short photocurrent density (Isc) 8.00 x 10-5, 6.80 x 10-7 and 3.10 x 10-4. The photo-to-electric conversion efficiency of the DSSC reached 4.63 x 10-3 % for 26 hours adsorbtion time.

Alumina-Activated Carbon Composite as Adsorbent of Procion Red Dye from Wastewater Songket Industry Poedji Loekitowati Hariani; Fatma Fatma; Zulfikar Zulfikar
The Journal of Pure and Applied Chemistry Research Vol 4, No 1 (2015)
Publisher : Chemistry Department, The University of Brawijaya

Alumina-activated carbon composite has been synthesized and studied for adsorption procion red dye. Composite was prepared by precipitation method aluminium hydroxide on the surface of activated carbon followed by calcinations. The Fourier transform Infra Red (FTIR), Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM-EDS) and Brunaeur Emmet Teller (BET) surface are being used to characterize the adsorbent. Batch adsorption experiments were carried out for the adsorption of procion red dye. Effect of the mass of composite, stirrer speed, contact times and pH of the solution on the adsorption capacity were studied. The obtained optimum conditions applied to adsorp of procion red dye from wastewater songket industry. The result showed that the adsorption optimum at mass of alumina-activated carbon composite 0.1 g, stirrer speed 150 rpm, contact times 2 hours at pH of the solution 9. The adsorption isotherm data according to Langmuir isotherm. The alumina-activated carbon composite can be removal of procion red dye from wastewater songket industry with effectiveness adsorption of 88.21 %.

Development of Spectrophotometric Method for Determination of Chromium Species Using Hypochlorite Agent Based on the Formation of Cr(VI)-Diphenylcarbazide Complex Lilik Suryati; Hermin Sulistyarti; Atikah Atikah
The Journal of Pure and Applied Chemistry Research Vol 4, No 1 (2015)
Publisher : Chemistry Department, The University of Brawijaya

Research of speciation analysis Cr(III) and Cr(VI) using hypochlorite and peroxide oxidants with Visible Spectrophotometry has been proposed. This research was carried to obtain optimum conditions of oxidation process Cr(III) into Cr(VI) and the formation of Cr(VI)-Diphenylcarbazide complex to the wavelength, complexing time, oxidizing agent (oxidant) concentration, oxidation temperature, pH, and the influence of foreign ion, so it can be proposed as an alternative method for speciation analysis of Cr(III) and Cr(VI). Optimization results show that the maximum wavelength of Cr(VI)-diphenylcarbazide complex is 542 nm by the stable complex time 16-30 minutes using a hypochlorite (HOCl) oxidant concentration 1 x 10-3 M, temperature 60 oC and pH 1. This method is compared with standard method. The presently developed method is more simple and faster than standard method. Regarding accuracy and precision, the method is quite comparable with the standard methods.Key words: speciation, Cr(III), Cr(VI), oxidant, hypochlorite, spectrophotometry VIS

Page 1 of 1 | Total Record : 6

Filter by Year

2015 2015

Filter By Issues

All Issue Vol. 14 No. 3 (2025): Edition September-December 2025 Vol. 14 No. 2 (2025): Edition May-August 2025 Vol. 14 No. 1 (2025): Edition January-April 2025 Vol. 13 No. 3 (2024): Edition September-December 2024 Vol. 13 No. 2 (2024): Edition May-August 2024 Vol. 13 No. 1 (2024): Edition January-April 2024 Vol. 12 No. 3 (2023): September-December 2023 Vol 12, No 2 (2023): May-August 2023 Vol 12, No 1 (2023): Edition January-April 2023 Vol 11, No 3 (2022): Edition September-December 2022 Vol 11, No 2 (2022): Edition May-August 2022 Vol. 11 No. 2 (2022): Edition May-August 2022 Vol 11, No 1 (2022): Edition January-April 2022 Vol 10, No 3 (2021): Edition September-December 2021 Vol 10, No 2 (2021): Edition May-August 2021 Vol 10, No 1 (2021): Edition January-April 2021 Vol 9, No 3 (2020): Edition September-December 2020 Vol 9, No 2 (2020): Edition May-August 2020 Vol 9, No 1 (2020): Edition January-April 2020 Vol 8, No 3 (2019): Edition September-December 2019 Vol 8, No 2 (2019): Edition May-August 2019 Vol 8, No 1 (2019): Edition January-April 2019 Vol 7, No 3 (2018): Edition September-December 2018 Vol 7, No 2 (2018): Edition May-August 2018 Vol. 7 No. 2 (2018): Edition May-August 2018ï»¿ Vol 7, No 1 (2018): Edition January-April 2018 Vol 6, No 3 (2017): Edition of September - December 2017 Vol. 6 No. 2 (2017): Edition of May-August 2017 Vol 6, No 2 (2017): Edition of May-August 2017 Vol 6, No 1 (2017): Edition of January - April 2017 Vol 5, No 3 (2016) Vol 5, No 2 (2016) Vol 5, No 1 (2016) Vol 4, No 3 (2015) Vol 4, No 2 (2015) Vol 4, No 1 (2015) Vol. 3 No. 3 (2014) Vol. 3 No. 2 (2014) Vol 3, No 2 (2014) Vol 3, No 1 (2014) Vol 2, No 3 (2013) Vol 2, No 2 (2013) Vol 2, No 2 (2013) Vol 2, No 1 (2013) Vol 1, No 1 (2012) Vol 1, No 1 (2012) More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Masruri

Contact Email
masruri@ub.ac.id

Phone
+62341-575838

Journal Mail Official
jpacr@ub.ac.id

Editorial Address
Departemen Kimia, Fakultas MIPA, Universitas Brawijaya, Jl. Veteran 65145 Malang

Location
Kota malang,

Jawa timur

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Masruri

Contact Email masruri@ub.ac.id

Phone +62341-575838

Journal Mail Official jpacr@ub.ac.id

Editorial Address Departemen Kimia, Fakultas MIPA, Universitas Brawijaya, Jl. Veteran 65145 Malang

Location Kota malang, Jawa timur INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Masruri

Contact Email
masruri@ub.ac.id

Phone
+62341-575838

Journal Mail Official
jpacr@ub.ac.id

Editorial Address
Departemen Kimia, Fakultas MIPA, Universitas Brawijaya, Jl. Veteran 65145 Malang

Location
Kota malang,

Jawa timur

INDONESIA