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Journal of the Brazilian Chemical Society
On-line version ISSN 1678-4790


Table of contents
J. Braz. Chem. Soc. vol.23 no.4 São Paulo Apr. 2012

 ·  2011: before and afterwards
Zucco, César

 ·  Use of lipase immobilized on celluse support for cleaning aged oil layers
Girelli, A. M.; Salvagni, L.; Tarola, A. M.

 ·  Electrocatalytic oxidation of dopamine, ascorbic acid and uric acid at poly­2,6­diaminopyridine on the surface of carbon nanotubes/gc electrodes
Kamyabi, Mohammad Ali; Shafiee, Mohammad Ali

 ·  Determination of biphenyl and biphenyl oxide in aqueous samples by headspace single drop microextraction coupled to gas chromatography
Sarkhosh, Maryam; Mehdinia, Ali; Jabbari, Ali; Yamini, Yadollah

 ·  Characterization of pyroligneous acid used in agriculture by gas chromatography-mass spectrometry
Souza, João Batista G; Ré-Poppi, Nilva; Raposo Jr., Jorge Luiz

 ·  Antioxidant activity and phenolic composition of brazilian honeys and their extracts
Lianda, Regina L. P.; Sant'Ana, Luiza D'Oliveira; Echevarria, Aurea; Castro, Rosane N.

 ·  Trace metals in the urban aerosols of Rio de Janeiro city
Loyola, Josiane; Arbilla, Graciela; Quiterio, Simone L.; Escaleira, Viviane; Minho, Alan S.

 ·  Asphalt binders modified by SBS and SBS/nanoclays: effect on rheological properties
Pamplona, Thaís F.; Amoni, Bruno de C.; Alencar, Ana Ellen V. de; Lima, Ana Paula D.; Ricardo, Nágila M. P. S.; Soares, Jorge B.; Soares, Sandra de A.

 ·  Ab Initio, DFT and semi-empirical studies on interactions of phosphoryl, carbonyl, imino and thiocarbonyl ligands with the li+ cation: affinity and associated parameters
Costa, Leonardo M. da; Paes, Lílian W. C.; Carneiro, José Walkimar de M.

 ·  Bioactive phenylpropanoids from Daphne feddei
Lu, Yanling; Li, Xuesen; Mu, Huaixue; Huang, Haitao; Li, Gan-Peng; Hu, Qiufen

 ·  Matrix effect in pesticide analysis by ultra fast liquid chromatography coupled to mass spectrometry
Ahumada, Diego A.; Zamudio, Adriana M.; España, Julio C.

 ·  Caffeine determination at a carbon fiber ultramicroelectrodes by fast-scan cyclic voltammetry
Nunes, Ronaldo S.; Cavalheiro, Éder T. G.

 ·  Volatile characterization by multivariate optimization of headspace-solid phase microextraction and sensorial evaluation of chardonnay base wines
Welke, Juliane E.; Zanus, Mauro; Lazarotto, Marcelo; Schmitt, Karine G.; Zini, Claudia A.

 ·  An efficient methodology for the synthesis of 3-styryl coumarins
Martins, Sérgio M. A.; Branco, Paula C. S.; Pereira, António M. D. R. L.

 ·  Ultrasound-assisted surfactant-enhanced emulsification microextraction combined with hplc for the determination of estrogens in water
Zou, Yan; Li, Yanhua; Jin, Hua; Zou, Deqing; Liu, Mousheng; Yang, Yaling

 ·  Effect of tungsten doping on catalytic properties of niobium oxide
Cardoso, Franciane P.; Nogueira, Andre E.; Patrício, Patrícia S. O.; Oliveira, Luiz C. A.

 ·  Fast and interference free determination of calcium and magnesium in honeys by solid phase extraction followed by flame atomic absorption spectrometry
Pohl, Pawel; Stecka, Helena; Jamroz, Piotr

 ·  Influence of the rainfall regime on the mobility of zn, cd, ni, cu, mn and fe in the surface sediments of the contas river located in the Brazilian semi-arid region
Santos, José S. dos; Santos, Marcio J. S. dos; Santos, Maria L. P. dos

 ·  A comprehensive investigation of the mineral composition of brazilian bee pollen: geographic and seasonal variations and contribution to human diet
Morgano, Marcelo A.; Martins, Márcia C. Teixeira; Rabonato, Luana C.; Milani, Raquel F; Yotsuyanagi, Katumi; Rodriguez-Amaya, Delia B.

 ·  Influence of spatial, edaphic and genetic factors on phenols and essential oils of Myrciaria cauliflora fruits
Duarte, Alessandra R.; Santos, Suzana C.; Seraphin, José C.; Ferri, Pedro H.

 ·  Nanostructure of polystyrene-b-poly(2-hydroxyethyl methacrylate) and derivatives with phosphonic diacid groups
Schmidt, Vanessa; Borsali, Redouane; Giacomelli, Cristiano

 ·  Evaluation of signal-to-background and Mg II/Mg I ratios as response for the optimization of rare earth elements determination by inductively coupled plasma optical emission spectrometry
Guimarães-Silva, Aline K.; Lena, Jorge C. de; Froes, Roberta E. S.; Costa, Letícia M.; Nascentes, Clésia C.

 ·  Chromatographic analyses of fatty acid methyl esters by HPLC-UV and GC-FID
Carvalho, Myller S.; Mendonça, Márcio A.; Pinho, David M. M.; Resck, Inês S.; Suarez, Paulo A. Z.

 ·  Selective and efficient mitochondrial staining with designed 2,1,3-benzothiadiazole derivatives as live cell fluorescence imaging probes
D. Neto, Brenno A.; Corrêa, José R.; Carvalho, Pedro H. P. R.; Santos, Diego C. B. D.; Guido, Bruna C.; Gatto, Claudia C.; Oliveira, Heibbe C. B. de; Fasciotti, Maíra; Eberlin, Marcos N; Silva Jr., Eufrânio N. da

 Short Reports
 ·  Meroterpenes from Peperomia oreophila Hensch. and Peperomia arifolia Miq.
Salazar, Karina J. M.; Lago, João Henrique G.; Guimarães, Elsie F.; Kato, Massuo J.

 ·  Strategies to improve accuracy and sensitivity in phosphorus determinations by inductively coupled plasma quadrupole mass spectrometry
Donati, George L.; Amais, Renata S.; Nóbrega, Joaquim A.