Autores: informamos que, a partir do próximo fascículo (39/9), a revista Química Nova adotará a licença CC-BY. Mais informações a respeito dessa licença podem ser obtidas aqui.
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...
Mariko FunasakiI,II,*; Hileia dos Santos BarrosoIII; Valdelira Lia Araújo FernandesII; Ingrid Sabino MenezesIV
Chemical aspects of fourteen species from Amazon rainforest used in cosmetics were reviewed for the purpose of quality control.
Diretoria, Conselho Consultivo e PubliSBQ
Jefferson C. dos SantosI; Mauro M. TashimaI; Marcia R. de MouraII; Fauze A. AouadaII,*
The presence of cement improves the mechanical property of hydrogel, and no phase separation between hydrogel and cement was detected.
Viviane A. C. CamposI; Alan R. T. MachadoI; Willian J. R. SilvaI; Karina C. LopesI; Willian C. TerraII; Vicente P. CamposII; Denilson F. OliveiraI,*
A bioguided fractionation of the extract from Cryptocarya aschersoniana resulted in the isolation of two active substances against root-knot nematodes (Meloidogyne spp.). According to an in silico study one of these substances inhibits the fumarate hydratase of these plant pathogens.
Thálisson S. SouzaI; Hudson G. ZaninII; Alfredo PeterlevitzII; Vitor BaranauskasII; Gilmare A. da SilvaIII; César ReisI; Efraim L. ReisI; Reinaldo F. TeófiloI,*
The electrodegradation of atrazine in water was performed using boron-doped diamond. The degradation was monitored by liquid chromatography and UV spectroscopy with multivariate curve resolution. The results were compared between the two methods.
Rogério de Oliveira*; Fabio Luiz Pissetti; Alzira M. S. Lucho
Gold electrodeposition on FTO by cyclic voltammetry and the electrochemical impedance spectroscopy study showing the lowest impedance values for FTO with 100 scans of electrodeposition and the respective simulated electric circuit.
Lanamar Almeida CarlosI,*; Leda MathiasII; Raimundo Braz-FilhoII; Ivo Jose Curcino VieiraII
Chemical structure of the novel sarpagine-type alkaloid, Na-methylrauflorine (1), isolated from Rauvolfia capixabae (Apocynaceae).
Freddy A. Bernal; Luisa L. Orduz-Díaz; Ericsson Coy-Barrera*
HPLC-UV-DAD profiles of Hibiscus sabdariffa extracts were submitted to data mining by Parallel Factor model (PARAFAC) and the corresponding 3D-profile information could be discriminated by means of OPLS-DA.
Mohammad RezaeeI,*; Faezeh KhalilianII
In this study, dispersive liquid-liquid microextraction based on the solidification of floating organic droplets was used for the preconcentration and determination of thorium in the water samples.
Fernanda L. SeixasI,II,*; Marcelino L. GimenesI; Nádia R. C. Fernandes-MachadoI
Vinasse adsorption diagram in two stages.
Carmen Lúcia Voigt*; Cleber Pinto da Silva; Sandro Xavier de Campos
Bioaccumulation is one of the most important processes among the various consequences of the presence of metals in the reservoirs; metals can accumulate in fish organs by exposure to contaminated sediment and water.
José Cândido S. de OliveiraI; Jorge M. DavidI,*; Juceni P. DavidII
The chemical studies of root and flower extracts resulted in isolation of 3'-dimethylellagic acid and 3,3'-dimethylellagic acid-4'-O-β-D-xyloside, terpenes, fatty acid methyl derivates and fatty alcohols.
Carla Grazieli Azevedo da Silva*; Carla Beatriz Grespan Bottoli; Carol H. Collins
Hydrophilic interaction liquid chromatography (HILIC) is an effective technique for the separation of polar compounds, with separation properties complementary to reversed-phase high performance liquid chromatography (RP-HPLC), while eliminating some of the disadvantages of normal-phase high performance liquid chromatography (NP-HPLC).
Thalles R. Rosa*; José Guilherme A. Rodrigues; Rafael de Q. Ferreira
This study employed a factorial design and center composite design in the optimization of the main experimental parameters of SWASV (square-wave anodic stripping voltammetry) for the simultaneous determination of metals Zn, Cd, Pb and Cu free in coconut water.
Pâmella F. dos SantosI; Lindamara M. SouzaII; Bianca B. MerloIII; Helber B. CostaII; Lilian V. ToseII; Heloá SantosII; Gabriela VaniniII; Leandro F. MachadoIV; Rafael S. OrtizV; Renata P. LimbergerVI; Boniek G. VazVII; Wanderson RomãoI,II,*
The chemical profile of a new designer drug, 2-(4-iodine-2,5-dimethoxyphenyl)-n-(2-methoxyphenyl)methyl]etamine or 25I-NBOMe, was explored using TLC, UV-Vis, ATR-FTIR, GC-MS and ESI-FT-ICR MS.
Mario Roberto Barro; Lea Veras; Salete Linhares Queiroz*
Development and integration of blogs in undergraduate chemistry teaching.
Leonardo Valderrama; Vassula Belinato Paiva; Paulo Henrique Março; Patrícia Valderrama*
An experiment to teach principal component analysis (PCA) is proposed based on the extraction of anthocyanins from red cabbage and measurement of the UV-Vis spectra in buffer solutions with pH 1.89-12.01.
Karla F. Dias CassianoI,*; Nyuara A. da Silva MesquitaII; Pabline Galvão RibeiroI
This study describes the construction of the teaching identity of chemistry teachers training at the Federal Institute of Goiás, Brazil, and focuses on the existing tensions between pedagogical and chemical knowledge.
On-line version ISSN 1678-7064 Printed version ISSN 0100-4042
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