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4:57, seg set 25








Autores: A partir do fascículo 39/9 a revista Química Nova adotou a licença CC-BY. Mais informações a respeito dessa licença podem ser obtidas aqui.

vol. 39, No. 8, 2016, p. 893-1025

 

Submission procedures for OPEN ACCESS

The Board of Directors of the Sociedade Brasileira de Química-SBQ (publisher of the Química Nova-QN) decided that QN 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(8), 987-994

Clinical aspects of the poisoning by the pesticide endosulfan

Jiří PatočkaI,II; Qinghua WuIII,IV; Tanos C. C. FrançaIII,V,VI; Teodorico C. RamalhoVII; Rene PitaVIII; Kamil KučaII,III,V,*

Endosulfan is one of the most abundant organochlorine pesticides in the environment today. This highly toxic compound has a high fatality rate in humans when ingested accidentally or in suicidal cases.

http://dx.doi.org/10.5935/0100-4042.20160102

Publicado online: junho 6, 2016
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Artigos Quim. Nova 2016, 39(8), 893-900

 

Avaliação dos teores de Pb, Cd, Sn, Co, Hg, Mo e As em solos da península Fildes - Antártica

Bruna M. DalfiorI; Larissa D. RorizI; Reginaldo F. JúniorI; Antônio Carlos de FreitasIII; Heitor E. da SilvaIII; Maria Tereza W.D. CarneiroI; Marcus Vinícius V. J. LicinioII; Geisamanda P. BrandãoI,*


Fildes Peninsula, King George Island - Antarctica: monitoring of the concentrations of Pb, Cd, Sn, Co, Hg, Mo and As in soil samples.

http://dx.doi.org/10.21577/0100-4042.20160134

Publicado online: agosto 1, 2016
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Quim. Nova 2016, 39(8), 901-905

 

Analysis of a commercial portable lithium-ion battery under low current charge-discharge cycles

Stephany Pires da Silva; Paulo Rogério Catarini da Silva; Alexandre Urbano; Jair Scarminio*


Correlations between the charge stored into and extracted from a commercial cell phone battery, the charging protocols (CC and CC+CV), the discharging current intensity and the corresponding discharging time.

http://dx.doi.org/10.5935/0100-4042.20160109

Publicado online: junho 17, 2016
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Quim. Nova 2016, 39(8), 906-913

 

Application of thermal plasma for inertization of sludge produced during treatment of landfill leachate

Anelise Leal Vieira CubasI,*; Marina de Medeiros MachadoI; Marilia de Medeiros MachadoI; Elisa Helena Siegel MoeckeI; Ana Regina de Aguiar DutraII; Haidi FiedlerIII; Priscila BuenoIII


Landfill leachate commonly contains heavy metals due to the incorrect disposal of products. The aim of this study was to apply a treatment for leachate sludge involving the thermal plasma in which the inertization of metals into a vitreous silicate form occurs.

http://dx.doi.org/10.21577/0100-4042.20160135

Publicado online: agosto 1, 2016
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Quim. Nova 2016, 39(8), 914-918

 

Interaction of Chalcones with CT-DNA by spectrophotometric analysis and theoreticalsimulations

Ximena ZarateII; Eduardo SchottIII; Carlos A. EscobarIV; Roberto Lopez-CastroV; Cesar EcheverriaI,VII; Leonor Alvarado-SotoI,VI; Rodrigo Ramirez-TagleI,*


This research focuses on the capacity of a chalcone's family of interacting with Calf Thymus DNA. The interactions were determined by spectrophotometric analysis [Electronic titration spectra, emission titration spectra and viscometry] and computational calculations.

http://dx.doi.org/10.5935/0100-4042.20160114

Publicado online: julho 8, 2016
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Quim. Nova 2016, 39(8), 919-924

 

Análise da concentração e composição de aerossóis de queimadas no pantanal Mato-Grosso

Anna Carolinna Albino SantosI,*; Amanda FingerII; José de Souza NogueiraI; Leone Francisco Amorim CuradoI; Rafael da Silva PaláciosI; Vinicius Marcio Rodrigues PereiraI


Site in RPPN - SESC Pantanal between 16/04 to 23/10 2012 and 10/02 to 10/08 2013.

http://dx.doi.org/10.5935/0100-4042.20160105

Publicado online: junho 10, 2016
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Quim. Nova 2016, 39(8), 925-931

 

Microextração líquido-líquido dispersiva assistida por vortex e ultrassom aplicada à determinação de agrotóxicos triazinas, triazinonas e o triazol flutriafol em água

Jaqueline da Silva Duarte; Eliana Freire Gaspar de Carvalho Dores; Ricardo D. Villa*


The extracting solvent is effectively dispersed in the water sample by sequential agitation in vortex and ultrasound. This procedure ensures the effective microextraction of pesticides without addition of a disperser solvent.

http://dx.doi.org/10.5935/0100-4042.20160110

Publicado online: junho 17, 2016
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Quim. Nova 2016, 39(8), 932-935

 

Electrochemical oxidation of ethylene at PANI/Pt and Ag/PANI/Pt modified electrodes

Lenys FernándezI,*; Edison Omar MartínezII; Hicher ZambranoIII


Electrochemical oxidation of ethylene at: a) Pt, b) PANI/Pt and c) Ag/PANI/Pt electrodes.

http://dx.doi.org/10.5935/0100-4042.20160115

Publicado online: julho 8, 2016
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Quim. Nova 2016, 39(8), 936-943

 

Determinação de metais por técnicas de espectrometria atômica em amostras de carvão mineral e cinzas utilizando metodologia de superfície de resposta

Camila M. Oliz; Emanoelli R. Lopes; Aline L. Medina; Anderson S. Ribeiro; Adriane M. Nunes*


This paper presents a simple, low coast and safe method for determination of Cu, Fe, Na and Zn in coal and ash samples by techniques of atomic spectrometry.

http://dx.doi.org/10.21577/0100-4042.20160120

Publicado online: julho 13, 2016
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Quim. Nova 2016, 39(8), 944-950

 

Mechanistic aspects of photocatalytic activity of metalloporphyrin-titanium mixtures in microemulsions

Lorean MadrizI,*; Hermes CarreroI; Oswaldo NúñezII; Ronald VargasI; Julio HerreraI


C-Cl bond homolytic cleavage of 4-chlorophenol and further methylation promoted by titanium (IV) citrate under light irradiation.

http://dx.doi.org/10.21577/0100-4042.20160140

Publicado online: agosto 5, 2016
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Quim. Nova 2016, 39(8), 951-955

 

In vitro Cr(VI) speciation in synthetic saliva after releasing from orthodontic brackets using silica-APTES separation and GF AAS determination

Maciel S. LuzI,II; Alexandre L. SouzaII; Ana C. S. S. HaddadIII; André TartomanoIII; Pedro V. OliveiraI,*


Cr speciation in saliva, using silica-APTES separation and GF AAS for determination showed that up to 40% of the total element released from the orthodontic brackets used was Cr(VI).

http://dx.doi.org/10.21577/0100-4042.20160129

Publicado online: julho 20, 2016
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Quim. Nova 2016, 39(8), 956-961

 

Cr/S/TiO2-loaded hollow glass microspheres as an efficient and recyclable catalyst for the photocatalytic degradation of indigo carmine under visible light

Xiuli ZhangI; Yidong YinI,*; Zhibo SunI; Yingqiu DuII; Shichao MaI; Yan WuI


Cr/S/TiO2-loaded hollow glass microspheres for use in the photocatalytic degradation of indigo carmine under visible light.

http://dx.doi.org/10.21577/0100-4042.20160121

Publicado online: julho 13, 2016
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Quim. Nova 2016, 39(8), 962-967

 

Sulfonic acid-functionalized LUS-1: an efficient catalyst for one-pot synthesis of 2,4-diamino pyrimidine-5-carbonitrile derivatives

Mahshid RahimifardI; Ghodsi Mohammadi ZiaraniI,*,#; Alireza BadieiII


Propyl sulfonic acid functionalized LUS-1 was used as a recyclable heterogeneous catalyst in the synthesis of 2,4-diamino pyrimidine-5-carbonitriles via condensation reaction of aromatic aldehydes, malononitrile and guanidine carbonate in solvent-free condition.

http://dx.doi.org/10.5935/0100-4042.20160111

Publicado online: junho 17, 2016
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Quim. Nova 2016, 39(8), 968-972

 

Precipitation reaction of clavulanic acid: thermodynamic and electronic study

Ana C. GranatoI,#,*; Edson B. CostaII; Wagner F. D. AngelottiIII; Geoffroy R. P. MalpassI,#; Marlei BarbozaI,#; Albérico B. F. da SilvaIV; Milan TrsicIV


In this study, two forms for industrial precipitation of clavulanic acid from the fermentation broth were thermodynamically and theoretically studied. The reactivity indexes correlate well with experimental observations.

http://dx.doi.org/10.5935/0100-4042.20160099

Publicado online: junho 6, 2016
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Quim. Nova 2016, 39(8), 973-978

 

The phenolic composition of the hepatoprotective and antioxidant fractions of Albizia lebbeck L.

Nadia M. SokkarI,II,*; Seham M. El-HawaryII; Amany M. SlemIII; Zeinab TalaatIV


LC-PDA-ESI-MS/MS is performed to explore the phenolic constituents of the hepatoprotective and antioxidant fractions of the leaves of Albizia lebbeck L.

http://dx.doi.org/10.5935/0100-4042.20160112

Publicado online: junho 17, 2016
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Quim. Nova 2016, 39(8), 979-986

 

Complexos de inclusão binários, ternários e quaternários contendo óleo essencial de Lippia sidoides

Cláudia R. F. Souza; Patrícia N. Ferraz-Freitas; Wanderley P. Oliveira*


The present study was aimed to improve aqueous solubility of a poorly water-soluble Lippia sidoides essential oil through the formation of inclusion complexes with beta-cyclodextrin (β-CD), a binary complex and the effect of addiction of surfactant and water soluble polymer obtained a multicomponent complex.

http://dx.doi.org/10.5935/0100-4042.20160108

Publicado online: junho 10, 2016
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Revisão Quim. Nova 2016, 39(8), 995-1006

 

Estratégias de síntese na descoberta de fármacos: o emprego da síntese orientada pela diversidade estrutural#

Diego Pereira Sangi*


This article shows the synthetic strategies used in drug discovery process, highlighting the principal approaches towards generating scaffold diversity in a Diversity-Oriented Synthesis.

http://dx.doi.org/10.5935/0100-4042.20160089

Publicado online: maio 25, 2016
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Nota Técnica Quim. Nova 2016, 39(8), 1007-1014

 

Validação de um método analítico para determinação de marcadores orgânicos geoquímicos em amostras de sedimentos marinhos

Edna Wisnieski#; Liziane M. M. Ceschim; César C. Martins*


An alternative method for determination of n-alkanes, sterols and n-alkanols in marine sediments, based on Soxhlet extraction, fractioning and clean up by adsorption chromatographic and gas chromatography.

http://dx.doi.org/10.5935/0100-4042.20160103

Publicado online: junho 6, 2016
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Educação Quim. Nova 2016, 39(8), 1015-1018

 

Nanopartículas de Au em líquido iônico suportadas em filmes biopoliméricos: uma aula prática para investigação da atividade antimicrobiana

Camila C. de Quadros; Marcos F. Brunelli; Vinícius W. Faria; Carla W. Scheeren*


The graphical abstract show the colloidal dispersion of Au nanoparticles formed (left) in the experiment and the transmission electron microscopy image (right) of the Au nanoparticles of 11 ± 1.5 nm obtained.

http://dx.doi.org/10.5935/0100-4042.20160087

Publicado online: maio 25, 2016
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Quim. Nova 2016, 39(8), 1019-1025

 

Preparação de 1,2,4-oxadiazol: sequência didática aplicada em disciplina de síntese orgânica na graduação

Juliana L. L. Freire Regueira; Jucleiton J. R. de Freitas; João R. de Freitas Filho*


This work describes a teaching-learning sequence for the preparation of 1,2,4-oxadiazol mediated by microwave irradiation, employing domestic equipment.

http://dx.doi.org/10.5935/0100-4042.20160095

Publicado online: junho 1, 2016
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