Elias Barros SantosI,*; Letícia Cuesta MatosI; Italo Odone MazaliII,*
The citrate capped gold nanoparticles (AuNPs) were used as a colorimetric sensor for the detection of sulfathiazole in mixed water/ethanol solution by simple visual inspection and using molecular absorption spectrophotometry.
Dorval M. Coelho NetoI; Laysa L. P. F. MoreiraI; Eustáquio V. R. de CastroI; Warley B. SouzaI; Paulo R. FilgueirasI; Wanderson RomãoI,II; Gabriely S. FolliI; Valdemar Lacerda Jr.I,*
Analytical techniques of infrared (IR), hydrogen nuclear magnetic resonance (1H NMR) and mass spectrometry (ESI(±)FT-ICR MS) applied to discriminate craft beers from industrial ones (brands common to the Brazilian market) aimed at building the chemical profile of beverages.
Olímpio J. Silva JuniorI,*; Camilla. V. C. MoreiraII; Arthur. F. F. MonteiroII; Victor. E. R. MeloIII; João. B. L. OliveiraI; Joanna E. KuleszaII; Bráulio S. BarrosIV
The synthesis solution was subjected to ultrasonic processing to obtain samples of Ca-MOF. Then, the obtained calcium MOF was applied in the adsorption of methylene blue in an aqueous solution.
Sonaly S. LealI,*; Eliane R. SousaII; Gilmar SilvérioI; Paulo C. LimaI
The determination of metals by ICP-OES in honey samples proved to be efficient in the application of this matrix as a bioindicator of geographic origin and environmental contamination.
Roberta F. OliveiraI; Raphael H. de M. PereiraI; Rodrigo da Silva VianaII; Severino Alves JúniorII; Mônica F. BelianI,*
This article proposes an innovative synthesis with the use of europium(III) oxide, hydrothermal process, generating a luminescent complex. The europium(III) coordination network showed a quantum efficiency of 56%, with triplet states located in the ligand system resonant to the 5D1 state of the Eu(III) ion.
Giuliano S. MartinsI; Ana Maria M. BatistaII; Juliano C. de SiqueiraIII,*; Luciene A. B. SiniscalchiIII; Rodrigo L. OréficeIV
Flocculation in high molecular weight polymers occurs by electrostatic interaction followed by bridging. A) Chitosan grafting; B) Infrared spectroscopy; C) Bridging flocculation process; D) UV-VIS spectroscopy.
Thalles R. RosaI,III; Bruno M. M. SiqueiraI; Rayana A. CostaI; Jadson Z. dos ReisI; Wagner L. S. PachecoIII; Paulo R. G. de MouraI; Wanderson RomãoI,II,IV,*; Paulo R. FilgueirasI,*
REDGIM application for smartphones on the Android platform capable of working with multivariate image analysis using chemometric methods through the luminous intensities of photos and R (red), G (green) and B (blue) channels.
Victória Laysna dos Anjos SantosI; Délis Galvão GuimarãesI; Rodolfo Hideki Vicente NishimuraII; Larissa Araújo RolimI,II; Arlan de Assis GonsalvesIII; Cleônia Roberta Melo AraújoIII,*
Main constituents of a theranostic system and structures of the naphthoimidazole and naphthoxazole nuclei, promising components for the theranostic system.
Marcos A.E. Cruz; Claudio R. Ferreira; Lucas F. B. Nogueira; Luiz H.S. Andrilli; Ana Lara N. dos Santos; Jeferson M. M. Macedo; Ekeveliny A. Veschi; Bruno Z. Favarin; Heitor G. Sebinelli; Mayte Bolean; Ana Paula Ramos*; Pietro Ciancaglini*
The hierarchical organization of bone from macroscale to molecular composition. Mineralization is driven by Matrix vesicles (MVs), which are secreted by osteoblasts or chondrocytes. MVs bind to the collagen fibrils and release this precursor mineral phase (CaP) which infiltrates into the staggered and periodic gaps of the collagen matrix. MV can be mimicked in liposomes or proteoliposomes to study biomineralization.
Nailma J. Martins*; Luele R. S. Barbosa; Vitor E. P. Cota; Henrique A. J. L. Mourão#
Representation of the main synthesis methods, photocatalytic applications and charge photogeneration scheme of titanium based lamellar materials.
Ricardo Moreira BorgesI,*; João Victor Mendes ResendeI; Aldebaran Oliveira de MoraesI; Alana Kelyene PereiraII; Rafael GarrettIII; Anelize BauermeisterIV,V; Antonio Jorge Ribeiro da SilvaI
A guided tutorial for LC-MS and GC-MS data processing using the open-source software MZmine2 is described. Examples data from an open-access repository is offered with processing parameters for training.
Nicole Febres Burneo; María Mora-Medina; Jorge G. Figueroa*
In order to maximize the extraction of phenolic compounds in the mango peel, the dehydration process and UAE were optimized. The results obtained may promote the use of this by-product as a source of mangiferin.
Camila Silveira*; Clarice D. B. Amaral; Glaucia Pantano; Tatiana R. G. Simões
The seven women who have been awarded a Nobel Prize in Chemistry: from the discovery of the elements radium and polonium to the development of a method for genome editing.
On-line version ISSN 1678-7064 Printed version ISSN 0100-4042
QuÃmica Nova
Publicações da Sociedade Brasileira de QuÃmica
Caixa Postal: 26037
05513-970 São Paulo - SP
Tel/Fax: +55.11.3032.2299/+55.11.3814.3602
Free access