JBCS



18:42, ter jul 26






Edição Atual vol. 39, No. 6, 2016, p. 647-769

 

New submission procedures for OPEN ACCESS from March 4th, 2016

The Board of Directors of the Sociedade Brasileira de Química-SBQ (publisher of the Química Nova-QN) decided that from March 2016 the JBCS will adopt the full open access format in which authors are required to cover part of the publication costs for their articles. See more...



Artigo de Capa
Quim. Nova 2016, 39(6), 732-740

SUSTENTABILIDADE NO USO DO FÓSFORO: UMA QUESTÃO DE SEGURANÇA HÍDRICA E ALIMENTAR

Glaucia Pantano; Guilherme M. Grosseli; Antonio A. Mozeto; Pedro S. Fadini

Phosphorus is a fundamental nutrient to life on planet, and essential for food production. Currently, the main source of phosphorus to agriculture are fertilizers obtained from phosphate rock, a nonrenewable resource, threatening the global food security.

http://dx.doi.org/10.5935/0100-4042.20160086

Publicado online: maio 10, 2016
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Artigos Quim. Nova 2016, 39(6), 647-654

 

ANALISIS QSAR-2D DE LOS DERIVADOS DE 1,4-DI-N-OXIDOS DE QUINOXALINA CON ACTIVIDAD CONTRA LA ENFERMEDAD DE CHAGAS

Cristian J. Guerra; Jesús M. López; Said F. Figueredo; Adolfo E. Muñoz; Juana R. Robles


The nucleophilic power of the N-oxide group is related to the biological activity of quinoxaline 1,4 di-N-oxides against T. cruzi.

http://dx.doi.org/10.5935/0100-4042.20160078

Publicado online: maio 6, 2016
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Quim. Nova 2016, 39(6), 655-660

 

PROPRIEDADES E AVALIAÇÃO CATALÍTICA DA ZEÓLITA X NANOMÉTRICA CONTENDO CÁTIONS METILAMÔNIO

João G. P. Vicente; Patrícia M. Lima; Dilson Cardoso


In order to increase accessibility to catalytic sites, studies have been carried out in order to reduce the diameter of the particles of zeolites to the nanometer scale.

http://dx.doi.org/10.5935/0100-4042.20160079

Publicado online: maio 6, 2016
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Quim. Nova 2016, 39(6), 661-668

 

ESTIMATIVA DE VIDA ÚTIL DO PBX (plastic-bonded explosive) COM ENVELHECIMENTO ACELERADO

Edemar Kirchhof; Roberta Jachura Rocha; Nanci Miyeko Nakamura; Camila Maria Lapa; Glaci Ferreira Martins Pinheiro; Rene Francisco Boschi Gonçalves; José Atílio Fritz Fidel Rocco; Koshun Iha


Optical microscope image through PBX (80 % HMX) cluster with PBLH.

http://dx.doi.org/10.5935/0100-4042.20160072

Publicado online: abril 25, 2016
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Quim. Nova 2016, 39(6), 669-675

 

SCOPE OF VARIOUS SOLVENTS AND THEIR EFFECTS ON SOLVOTHERMAL SYNTHESIS OF Ni-BTC

Farrukh Israr; Duk Kyung Kim; Yeongmin Kim; Wongee Chun


This picture depicts the scheme which has been employed in this manuscript for solvothermal synthesis of Ni-BTC. The organic linker H3BTC was dissolved in series of solvents and solvothermally reacted with NiNO3.6H2O(aqueous) for the production of Ni-BTC.

http://dx.doi.org/10.5935/0100-4042.20160068

Publicado online: abril 20, 2016
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Quim. Nova 2016, 39(6), 676-685

 

NATURALEZA DE LAS INTERACCIONES Mδ+···δ+C-Oδ- EN CARBONILOS METÁLICOS. UN ESTUDIO BASADO EN LA TOPOLOGÍA DE LA DENSIDAD DE CARGA ELECTRÓNICA Y SU FUNCIÓN LAPLACIANA

Gabriel J. Buralli; Darío J. R. Duarte; Nélida M. Peruchena


The nature of Mδ+···δ+C-Oδ- interactions in metal carbonyls can be explained through the topological analysis of the electron charge density and its Laplacian function within the framework of the Quantum Theory of Atoms in Molecules (QTAIM).

http://dx.doi.org/10.5935/0100-4042.20160080

Publicado online: maio 6, 2016
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Quim. Nova 2016, 39(6), 686-690

 

DEGRADAÇÃO FOTOCATALÍTICA DE CORANTE UTILIZANDO-SE NANOCOMPÓSITO TiO2/ÓXIDO DE GRAFENO

Arlene B. S. Nossol; Suzamar M. C. Rosa; Edson Nossol; Aldo J. G. Zarbin; Patricio Peralta-Zamora


Synergetic degradation of organic substrates by TiO2-graphene oxide nanocomposites: electron shuttling and preliminary adsorption of target compounds.

http://dx.doi.org/10.5935/0100-4042.20160081

Publicado online: maio 6, 2016
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Quim. Nova 2016, 39(6), 691-696

 

NON-CRYSTALLINE COPPER OXIDE HIGHLY DISPERSED ON MESOPOROUS ALUMINA: SYNTHESIS, CHARACTERIZATION AND CATALYTIC ACTIVITY IN GLYCEROL CONVERSION TO ACETOL

Tiago Pinheiro Braga; Nadine Essayem; Antoninho Valentini


An excessive increase in surface area was observed after Cu2+ insertion by wet impregnation from β-Al(OH)3 support, which is explained by the redissolution and recrystallization of bayerite to γ-Al2O3 during the impregnation of Cu2+.

http://dx.doi.org/10.5935/0100-4042.20160074

Publicado online: abril 29, 2016
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Quim. Nova 2016, 39(6), 697-703

 

DETERMINAÇÃO DE ESTANHO EM AMOSTRAS AMBIENTAIS POR ESPECTROMETRIA DE FLUORESCÊNCIA ATÔMICA

Daniel L. Garcez; Amauri A. Menegário; José R. Ferreira; Warren T. Corns; Carlos A. Suárez; Ana M. C. M. Rolisola; Lauren N. M. Yabuki


Determination of tin in natural samples collected in area under anthropogenic action through atomic fluorescence spectrometry.

http://dx.doi.org/10.5935/0100-4042.20160073

Publicado online: abril 25, 2016
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Quim. Nova 2016, 39(6), 704-711

 

IN SITU PREPARED TIO2 NANOPARTICLES CROSS-LINKED SULFONATED PVA MEMBRANES WITH HIGH PROTON CONDUCTIVITY FOR DMFC

Jignasa N. Solanki; Preeti S. Mishra; Zagabathuni Venkata Panchakshari Murthy


Sulfonated poly(vinyl alcohol) (SPVA) membranes and in situ prepared TiO2 nanoparticles incorporated SPVA membranes are prepared to use in direct methanol fuel cell. Very low methanol permeability is observed with the prepared membranes. Proton conductivity of the membranes is higher than Nafion and high thermal stability is achieved with increased TiO2 nanoparticles concentration.

http://dx.doi.org/10.5935/0100-4042.20160076

Publicado online: abril 29, 2016
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Quim. Nova 2016, 39(6), 712-719

 

EVALUACIÓN DE DES, FSC Y SPME/CG-MS PARA LA EXTRACCIÓN Y DETERMINACIÓN DE COMPUESTOS RESPONSABLES DEL AROMA DE CAFÉ TOSTADO DE VILCABAMBA - ECUADOR

Jorge G. Figueroa; Luis F. Vargas


Three extraction methods were compared (SPME, SCF and SDE) for isolation of flavor compounds from roasted ground coffee of Vilcabamba (Ecuador). Identification and characterization of volatile compounds were achieved using gas GC-MS.

http://dx.doi.org/10.5935/0100-4042.20160077

Publicado online: abril 29, 2016
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Quim. Nova 2016, 39(6), 720-731

 

A STRATEGY FOR THE RAPID IDENTIFICATION OF FUNGAL METABOLITES AND THE DISCOVERY OF THE ANTIVIRAL ACTIVITY OF PYRENOCINE A AND HARZIANOPYRIDONE

Laura P. Ióca; Stelamar Romminger; Mario F. C. Santos; Karin F. Bandeira; Fabiana T. Rodrigues; Miriam H. Kossuga; Karen J. Nicacio; Everton L. F. Ferreira; Raquel P. Morais-Urano; Messias S. Passos; Luciana K. Kohn; Clarice W. Arns; Lara D. Sette; Roberto G. S. Berlinck


A strategy for the rapid identification of fungal metabolites.

http://dx.doi.org/10.5935/0100-4042.20160092

Publicado online: maio 26, 2016
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Nota Técnica Quim. Nova 2016, 39(6), 741-747

 

DETERMINAÇÃO ESPECTROFOTOMÉTRICA DE WPNI E HMF EM LEITE UHT ATRAVÉS DA ANÁLISE POR COMPONENTES PRINCIPAIS

Leandra N. O. Neves; Paulo Henrique F. da Silva; Marcone A. L. de Oliveira


Spectrophotometric methods associated to chemometric analysis as an attractive approaching to determination of chemical modifications during UHT milk heat treatment assisting in a quality control process.

http://dx.doi.org/10.5935/0100-4042.20160082

Publicado online: maio 6, 2016
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Educação Quim. Nova 2016, 39(6), 748-756

 

A EDUCAÇÃO AMBIENTAL NA FORMAÇÃO DE PROFESSORES DE QUÍMICA: ESTUDO DIAGNÓSTICO E REPRESENTAÇÕES SOCIAIS

Lailton Passos Cortes Junior; Carmen Fernandez


Central words of social representations of environmental education of future teachers of chemistry.

http://dx.doi.org/10.5935/0100-4042.20160044

Publicado online: março 11, 2016
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Quim. Nova 2016, 39(6), 757-764

 

SOBRE UM ESTUDO DA ENTROPIA DE SHANNON NO CONTEXTO DA MECÂNICA QUÂNTICA: UMA APLICAÇÃO AO OSCILADOR HARMÔNICO LIVRE E CONFINADO

Wallas S. Nascimento; Frederico V. Prudente


General behavior of the Shannon entropy Sx and Sp depending on the distance of confinement (xc). Highlight that the inflection of the curves is due to the influence of confinement, while the behavior of these for large xc tends toward a free system.

http://dx.doi.org/10.5935/0100-4042.20160045

Publicado online: março 11, 2016
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Quim. Nova 2016, 39(6), 765-769

 

CALCULATION OF CONDITIONAL EQUILIBRIUM IN SERIAL MULTIPLE PRECIPITATION OF METAL SULFIDES WITH HYDROGEN SULFIDE STREAM GENERATED FROM SODIUM SULFIDE: A DIDACTIC TOOL FOR CHEMISTRY TEACHING

Renata Bellová; Danica Melicherčíková; Peter Tomčík


Serial precipitation of Cd2+, Cu2+, Zn2+, Mn2+ and Pb2+ ions forming various colored sulfides in bubblers with chemically generated hydrogen sulfide stream.

http://dx.doi.org/10.5935/0100-4042.20160062

Publicado online: abril 12, 2016
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