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Química Nova
Print version ISSN 0100-4042

 

Table of contents
Quím. Nova vol.21 no.5 São Paulo Sept./Oct. 1998

 Editorial
  
 
        · text in Portuguese     · pdf in Portuguese
  
 Artigo
  
 ·  The acid-base properties of 4,4'-dithiodipyridine
Moreira, Ícaro de Sousa; Parente, Letícia Tarquinio de Sousa; Franco, Douglas Wagner

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Heavy metals in fresh waters for evaluation of hydrographic basins
Yabe, Maria Josefa Santos; Oliveira, Elisabeth de

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Activity - guided isolation of constituents of Unonopsis lindmanii - Annonaceae, based on the brine shrimp lethality bioassay
Siqueira, João Máximo de; Bomm, Mauro Dionei; Pereira, Núbia Fernanda Gomes; Garcez, Walmir Silva; Boaventura, Maria Amélia Diamantino

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Catalytic decomposition of soybean oil in the presence of different zeolites
Santos, Frances R.; Ferreira, José Carlos Netto; Costa, Stella R. Reis da

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Synthesis and characterization of new gold (I) phosphine complexes
Howe, B. P.; Parish, R. V.; Pritchard, R. G.

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Isolation and characterization of acyl-thiosemicarbazides as intermediates in mesoionic compounds synthesis
Maciel, M. A. M.; Echevarria, A.; Rumjanek, V. M.

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Synthesis and antibacterial activity of cyclic imides: 3,4 dichloromaleimides and 3-chloro-4-substituted-maleimides
Andricopulo, Adriano Defini; Yunes, Rosendo Augusto; Nunes, Ricardo José; Savi, Alessandro O. S.; Corrêa, Rogério; Cruz, Alexandre Bella; Cechinel Filho, Valdir

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Ozonolysis of organosolv and kraft eucalyptus lignins. Parte II: kinetic in basic and acid media
Nascimento, Evandro A.; Morais, Sérgio A. L.; Aquino, Francisco J. T.; Piló - Veloso, Dorila

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Determination of organic phosphorus in oil production waters by ICP-AES and ICP-MS after preconcentration on silica immobilized C18
Rocha, Anderson Araújo; Miekeley, Norbert; Silveira, Carmem Lúcia Porto da; Bezerra, Maria Carmem Moreira

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Q mode factor multivariate calibration for systems with overlapped bands
Scarminio, Ieda Spacino; Ishikawa, Dilson Norio; Barreto, Wagner José; Paczkowski, Édio Luiz; Arruda, Iara Cintra

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 Revisão
  
 ·  Synthetic strategies for nonactic acid
Ferraz, Helena M. C.; Payret-Arrúa, M. Elena

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Routes of synthesis and the homogeneity of mullite and cordierite precursors
Lima, Patrícia Tavares de; Bertran, Celso Aparecido; Thim, Gilmar Patrocínio

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Screen-printed electrodes
Nascimento, Valberes B.; Angnes, Lúcio

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 Divulgação
  
 ·  Complexing agents: podands, coronands and cryptands classification and nomenclature
Whei, Oh Lin; Brito Neto, José Thomé Xavier de

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  The use of calorimetry in ecology
Airoldi, Claudio

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  L-ascorbic acid: complexation and redox reactions with some transition metal ions
Fornaro, Adalgiza; Coichev, Nina

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 Nota técnica
  
 ·  Determination of potassium in honeys after precipitation with sodium tetraphenilborate and separation on ion exchanger column
Azeredo, Maria Aparecida Alves; Azeredo, Laerte da Cunha; Soares, Jucelane de Castro Alcântara

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Utilization of a particle beam interface for the obtaintion of mass spectra of low volatile compounds in solution
Augusti, Rodinei; Dias, Adelson de O.; Fortes, Isabel C. P.

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Automatization of a water distilling apparatus
Neves, Carlos A.; Gutz, Ivano G. R.; Lago, Claudimir L. do

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 Educação
  
 ·  Permanganimetric titration of Fe3+ with the use of mettalic zinc as reducing agent - a contribution to undergraduate courses
Lichtig, Jaim; Rocha, Marcos; Táboas, Regina G. Z.; Röpke, Sacha

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Models for the sp3 carbon atom: four pyramids in the tetrahedron
Constantino, Mauricio Gomes; Souza, Altamiro Xavier de

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 Assuntos gerais
  
 ·  Theodoro Peckolt: naturalist and pharmacist of the Brazilian Empire
Santos, Nadja Paraense dos; Pinto, Angelo C.; Alencastro, Ricardo Bicca de

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Waste management program for chemical residues in both teaching and research laboratories
Jardim, Wilson de Figueiredo

        · abstract in English     · text in Portuguese     · pdf in Portuguese
  
 ·  Carta ao editor


        · text in Portuguese     · pdf in Portuguese