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...
Juliana P. Aguiar; Janilson J. S. Júnior; Dijanah C. Machado; Maria C. A. Melo; Cláudio G. Rodrigues*
Alpha-toxin as prototype of a single protein nanopore for detection, quantification and characterization of molecules in aqueous systems.
Alexandre A. OliveiraI; Marcelo R. L. OliveiraI,*; Mayura M. M. RubingerI; Elisa L. PilóI; Daniele C. MenezesI; Laércio ZambolimII
Petri dishes containing colonies of Botrytis cinerea after 3 days of incubation at 22 ºC, were treated with tetraphenylphosphonium bis(4-fluorophenylsulphonyldithiocarbimate) zincate(II) at six different concentrations and compared to a control (negative treatment check).
Frances R. SantosI; Raimundo Braz-FilhoI,II,#; Rosane N. CastroI,*
Oxygenated sesquiterpenes, furanodiene and germacrone were predominant in the essential oil of Eugenia uniflora and distinguished with respect to the age of the leaves.
Emmanoel Vilaça CostaI,II,*; Marília Fernanda Chaves SampaioIII; Marcos José SalvadorIV; Angelita NepelV; Andersson BarisonV
Twenty compounds, including three lignans and twelve alkaloids, were found in stem bark A. pickelli and the NMR data for several alkaloids were reviewed.
Riama Coelho GouveiaI,II,*; Hanay KamimuraI; Rafael MunhozI; Ariano De Giovanni RodriguesI; Edson Roberto LeiteIII; Adenilson José ChiquitoI
Ge nanowires grown from Cu catalyst. Morphological analysis showed that the nanowires are composed of single crystalline germanium with long range order. Electrical characterization confirmed the semiconductor behavior and identified VRH as the dominant transport mechanism.
Monika Piazzon TagliariI; Andrea GranadaI; Marcos Antonio Segatto SilvaI; Hellen Karine StulzerI,*; Betina Giehl Zanetti-RamosII; Daniel FernandesIII; Izabella Thais SilvaIV; Claudia Maria Oliveira SimõesIV; Regina SordiV; Jamil AssreuyV; Valdir SoldiVI
Development of nifedipine nanocapsules by interfacial deposition: a strategy to improve drug stability.
Ismael C. BellettiniI,IV,*; Renato EisingII; Arlindo C. FelippeIII; Josiel B. DomingosIV; Edson MinattiIV; Vanderlei G. MachadoIV
Change of the pH of aqueous solutions of SDS-PEI, TTAB-PEI (●) and NaBr-PEI (●).
Eliane Sloboda Rigobello*; Ana Paula Jambers Scandelai; Beatriz Lopes Corso; Célia Regina Granhen Tavares
The LLE landfill leachate was evaluated under different conditions. The analyses carried out with a gas chromatograph coupled with a mass spectrometer allowed the identification of organic compounds in the leachate in the study.
Laís Pereira Silva; Bruna C. Lourencao; Orlando Fatibello-Filho*
Voltammetric behavior of amlodipine besylate and hydrochlorothiazide on borondoped diamond electrode with hydrogen or oxygen terminations.
José A. Garcia#; Edenir R. Pereira-Filho*
Evaluation of sample preparation method using microwave radiation, targeting the extraction of Ba, Cd, Cr, Hg and Pb in raw material samples of school supplies.
Cristiane PereiraI,*; Letícia L. de OliveiraII; Ricardo GonçalvesIII; Ana Claudia F. AmaralIV; Ricardo M. KusterI; Cassia M. SakuraguiIII
The presence of flavonol 3-O-glycosides can be considered a synapomorphy of American Spondias, and the presence of rhamnetin 3-O-rutinoside coupled with phylogenetic data is evidence for the separation of the two Atlantic forest Spondias species in a distinct clade.
Paulo EichlerI; Fernando SantosI,*; Marcilio ToledoI; Patrícia ZerbinI; Guilherme SchmitzI; Camila AlvesI; Lúcias RiesI; Fernando GomesII
Simplified fluxogram for biomethanol production processes with lignocellulosic biomass.
Deangelis DamascenoI; Thiago G. ToledoII; Mariana S. GodinhoII; Cassiano P. da SilvaIII; Sérgio B. de OliveiraIV; Anselmo E. de OliveiraII,*
A Multivariate Image Analysis (MIA) laboratory activity was proposed estimating pH of drinking water samples from its digital images after adding bromothymol blue as a pH indicator, and using the PLS multivariate calibration method.
Darllene Silveira; Jessica Oliveira Fernandes; Elisabete Alves Pereira*
Formaldehyde reacts with MBTH to form an azine, which is oxidized by a ferric chloride in acid media to form a blue cationic dye. Formaldehyde reacts with Purpald reagent in alkaline media to form a purple anion dye. The Nash reagent method relies on the reaction of formaldehyde with acetylacetone in acidified ammonium acetate to form a yellow product.
Gleissy M. A. D. A. dos SantosI; Luciano J. Q. TeixeiraII; Olavo S. Pereira JúniorIII; Alexandre R. dos SantosIV; Marcio FronzaI; Ary G. Da SilvaI; Rodrigo SchererI,*
The objective of this paper was to monitor pesticide residues in conventionally and organically grown tomatoes from different markets in Vitória and Vila Velha cities (Espírito Santo, Brazil).
Shirley L. de FariasI,II; Lívio G. da CostaI; Rodrigo F. CaliliII; Ramon M. RiosIII; Elcio C. de OliveiraI,II,*
This work, on the determination of very low concentrations of sulfur content in diesel S-10 by MWDXRF, breaks two paradigms: every curve should be adjusted by an unweighted linear regression and all samples must be read in the central part of the analytical curve.
Omar PandoliI,*; Tommaso Del RossoII; Vinicius Modolo SantosI,III; Renan de Siqueira RezendeI; Bojan A. MarinkovicIII
Schematic diagram depicting adopted procedure for low-cost microfabrication of a PDMS/Glass microreactor.
Rhayanna P. Gonçalves; Paulo H. Março; Patrícia Valderrama*
The instrumental signals (D), relating to components of olive oil samples, were isolated and resolved by MCR-ALS in terms of quantitative contributions on the pure components (C) and spectral profiles (ST), respectively.
Cleônia Roberta Melo Araújo*; Carlos Alberto Leite Filho; Victória Laysna dos Anjos Santos; Gabriela Lemos de Azevedo Maia; Arlan de Assis Gonsalves
Drug development by molecular hybridization: a medicinal chemistry practice class using paracetamol and sulfadiazine tablets and the virtual tool SciFinder®.
Silvio CunhaI,II,*; Otelício Bispo dos Santos da CostaI,II; Lourenço Luis Botelho de SantanaI,II; Wilson Araújo Lopes I,II
A solvent-free synthesis of acetanilide without the use of additives was developed in the context of green chemistry.
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