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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.

Edição Atual vol. 41, No. 9, 2018, p. 959-1094

 

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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 2018, 41(9), 974-981

Efeitos de nanopartículas comerciais de óxido de ferro (Fe2O3): citotoxicidade, genotoxicidade e estresse oxidativo

Tatiane Balbo Batista-GallepI; Tatiane Pasquoto-StiglianiII; Mariana GuilgerII; Diogo Torres RhederI; Tais Germano-CostaII; Natalia Bilesky-JoséII; Leonardo Fernandes FracetoIII; Cleoni dos Santos CarvalhoI; Renata de LimaI,II,*

This study shows toxicity results of commercial iron oxide nanoparticles.

http://dx.doi.org/10.21577/0100-4042.20170271

Publicado online: agosto 14, 2018
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Artigos Quim. Nova 2018, 41(9), 959-968

 

Distribuição de elementos traço em tecidos de Goniopsis cruentata (latreille, 1803) capturados nos manguezais do sul da bahia - brasil e avaliação do potencial de risco no consumo

Luanna M. CarneiroI; Danilo J. G. da SilvaII; Luan C. G. dos ReisI; Daiane A. F. de OliveiraI; Laís da C. MacielII; Karina S. GarciaI; Sarah A. R. SoaresI,*; Antônio F. de S. QueirozI


The presence of selected metals in tissues of G. cruentata can represent a potential human health risk to the consumer.

http://dx.doi.org/10.21577/0100-4042.20170272

Publicado online: agosto 14, 2018
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Quim. Nova 2018, 41(9), 969-973

 

Measuring the light crude oil (lco) content in standard biodiesel/lco blends by thermal analysis

Luis Díaz-BalloteI,*; Norberto U. García-CruzII; Emanuel Hernández-NuñezII; Andrea Castillo-AtocheIII; Gerardo González-GarcíaIV; Geonel Rodriguez-GattornoI


Differential scanning calorimetry (DSC) was demonstrated to be a helpful tool to determine the light crude oil (LCO) fraction in biodiesel/LCO blends. DSC results were validated with nuclear magnetic resonance (NMR).

http://dx.doi.org/10.21577/0100-4042.20170268

Publicado online: julho 31, 2018
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Quim. Nova 2018, 41(9), 982-988

 

Composição química e atividade antinociceptiva em modelo animal do óleo essencial de Myrcia rostrata DC. (myrtaceae)

Aline do Nascimento SilvaI,*; Horácio Freitas BomfimII; Acsa Oliveira MagalhãesI; Marilene Lopes da RochaI; Angélica Maria LuccheseII


Antinociceptive potential of the essential oil obtained from fresh Myrcia rostrata DC. leaves evidenced by the reduction in the number of abdominal writhes induced by acetic acid in mice.

http://dx.doi.org/10.21577/0100-4042.20170274

Publicado online: agosto 21, 2018
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Quim. Nova 2018, 41(9), 989-998

 

Espectroscopia fotoacústica para analisar a fertilidade de solos tratados com biochar e micorriza

Ellen Conceição T. de MatosI; Luciana A. RodriguesII; Pamella de A. SouzaI; Renato V. da SilvaII; Roberto T. Faria Jr.I,*


Soil substrates must exhibit physical and chemical properties in such way that a high capacity to supply the nutritional demand can be guaranteed, taking into account environmental standards.

http://dx.doi.org/10.21577/0100-4042.20170270

Publicado online: agosto 14, 2018
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Quim. Nova 2018, 41(9), 999-1005

 

Influência da rigidez do meio na cinética do fotocromismo de ditizonatos metálicos

Cristiane Lázara de BarrosI; Newton Martins Barbosa NetoII; Antonio Otavio T. PatrocinioI,*


Spectral changes due to the isomerization of mercury dithizonate(II) in PMMA at 298 K.

http://dx.doi.org/10.21577/0100-4042.20170280

Publicado online: agosto 27, 2018
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Quim. Nova 2018, 41(9), 1006-1010

 

Influência da nanoemulsão de óleo essencial de limão em filmes à base de gelatina

Juliana C. Nunes; Pamela Thais S. Melo; Fauze A. Aouada*; Marcia R. de Moura


Filmogenic solution was obtained by stirring the lemon essential oil on the Turrax stirrer and adding gelatin powder in the nanoemulsion to form the films.

http://dx.doi.org/10.21577/0100-4042.20170277

Publicado online: agosto 21, 2018
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Quim. Nova 2018, 41(9), 1011-1018

 

Arsenic and trace metals in water and sediment of the velhas river, southeastern iron quadrangle region, minas gerais, brazil

Danilo de C. SilvaI; Carlos R. BellatoI,*; José de O. Marques NetoI; Maurício P. F. FontesII


The Velhas River contains high amounts of arsenic and metals in water and sediment samples. BCR method was used to investigate its bioavailability in the sediment. All sediments samples presented As and metals associated with easily mobilized fractions.

http://dx.doi.org/10.21577/0100-4042.20170275

Publicado online: agosto 21, 2018
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Quim. Nova 2018, 41(9), 1019-1024

 

Imobilização de peroxidase de raiz forte em bagaço de cana-de-açúcar

Monna Lisa B. QueirozI,II; Kennedy C. da ConceiçãoI,II; Micael Nunes MeloI,II; Osmar Calderón SánchezIII; Heiddy M. AlvarezIV; Cleide M. F. SoaresI,II; Alini T. FricksI,II,*


Immobilization of HRP on sugarcane bagasse by physical adsorption (ADS) and covalent bond (LC) on activated support by 2.5% (v/v) glutaraldehyde (GA).

http://dx.doi.org/10.21577/0100-4042.20170279

Publicado online: agosto 22, 2018
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Quim. Nova 2018, 41(9), 1025-1032

 

Recovery of lead and noble metals after processing printed circuit boards from cell phones by leaching with mixtures containing hydrogen fluoride

Walner Costa SilvaI; Roger de Souza CorrêaI; Pedro Rosário GismontiI; Júlio Carlos AfonsoI,*; Rubens Souza da SilvaII; Cláudio Augusto ViannaII; José Luiz MantovanoII


Hydrometallurgical process for printed circuit boards from cell phones using HF + oxidant mixtures under mild experimental conditions. Lead and noble metals were recovered from the insoluble matter.

http://dx.doi.org/10.21577/0100-4042.20170267

Publicado online: julho 31, 2018
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Revisão Quim. Nova 2018, 41(9), 1033-1054

 

Recentes avanços em reações orgânicas catalisadas por níquel

Danielle L. J. Pinheiro; Giovanni W. Amarante*


This review covers some recent work by using Nickel catalysis. In this context, challenged organic transformations, synthetic applications and mechanism investigations are described.

http://dx.doi.org/10.21577/0100-4042.20170269

Publicado online: julho 31, 2018
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Nota Técnica Quim. Nova 2018, 41(9), 1055-1060

 

Potencial exposição ao mercúrio atmosférico no ambiente ocupacional de comércios de ouro de porto velho, rondônia

Leidiane C. LauthartteI,*; Diego F. GomesI; Marília H. MussyI; Ígor B. B. de HolandaI; Ronaldo AlmeidaII; Wanderley R. BastosI


Alluvial gold mining dredge on the Madeira river. The gold extracted by the dredges is taken to the city of Porto Velho for commercialization, where the its smelting and Hg exposure occurs in the atmosphere of specialized stores.

http://dx.doi.org/10.21577/0100-4042.20170253

Publicado online: junho 28, 2018
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Quim. Nova 2018, 41(9), 1061-1071

 

Aplicação de programa computacional livre em planejamento de experimentos: um tutorial

Fabíola Manhas Verbi PereiraI; Edenir Rodrigues Pereira-FilhoII,*


Factorial design: use of free software and videos for better data interpretation.

http://dx.doi.org/10.21577/0100-4042.20170254

Publicado online: junho 28, 2018
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Educação Quim. Nova 2018, 41(9), 1072-1082

 

O espaço da química nos centros e museus de ciências brasileiros

Ana C. da S. Steola*; Ana C. Kasseboehmer


In this article we discuss the space of Chemistry in Brazilian science centers and museums through a documental survey conducted by telephone, mail and analyzing the websites of those places.

http://dx.doi.org/10.21577/0100-4042.20170248

Publicado online: junho 7, 2018
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Quim. Nova 2018, 41(9), 1083-1088

 

An approach to the kinetics and thermodynamics of elementary chemical reactions using a stochastic model

Francis Pereira Nascimento; Baraquízio Braga do Nascimento Junior; Luiz Augusto Martins Cardoso; Rodrigo Veiga Tenório de Albuquerque; Nemesio Matos Oliveira-Neto*


Top Figure: Potential energy for A ⇆ B reaction. Bottom Left Figure: Transitions between states A and B. (i) Ehrenfest urn model (Urns A and B) randomly defines the collision between molecules; (ii) Monte Carlo method (PAB and PPBA: Metropolis Update) defines the transition probabilities. Bottom Right Figure: A tipical results for 102 samples.

http://dx.doi.org/10.21577/0100-4042.20170241

Publicado online: maio 22, 2018
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Quim. Nova 2018, 41(9), 1089-1094

 

Identificação de adulteração em óleos de oliva: problematizando a introdução à espectrometria de massas

Angélica Priscila Parussolo ToninI; Gabrielly Ribeiro CarneiroII; Marcos Alessandro dos Santos RibeiroI; Jaime da Costa CedranIII; Valquíria de Moraes SilvaII; Eduardo Cesar MeurerII,*


Students using mass spectrometry to check if the oils were adulterated with soybean oil. An investigative approach to learning mass spectrometry and other fundamental concepts of chemistry.

http://dx.doi.org/10.21577/0100-4042.20170256

Publicado online: junho 28, 2018
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