Initial formation of teachers of chemistry: the use of the reports of observation of classes as instruments of research

by Fabiele Cristiane Dias Broietti, Sonia Regina Giancoli Barreto
Published 2011-09-01

Iron oxide and pyrocatechol: a spectroscopy study of the reaction products

by Wagner José Barreto, Sônia Regina Giancoli Barreto, Ivanira Moreira, Yoshio Kawano
Published 2006-12-01

Extração/pré-concentração de íons cobre no ponto nuvem explorando a formação de complexos com DMIT [4,5-dimercapto-1,3-ditiol-2-tionato]

by Bruna Fabrin Somera, Fernanda Midori de Oliveira, Wagner José Barreto, Sônia Regina Giancoli Barreto, César Ricardo Teixeira Tarley
Published 2012-01-01

Determination of Ni(II) in metal alloys by spectrophotometry UV-Vis using dopasemiquinone

by Wagner José Barreto, Sonia Regina Giancoli Barreto, Ieda Spacino Scarminio, Dílson Norio Ishikawa, Miriam de Fátima Soares, Marcus Vinícius Brás de Proença
Published 2010-01-01

DETERMINATION OF NI(II) IN ALLOYS USING A NEW REAGENT DERIVED FROM L-DOPA

by Wagner José Barreto, Herica Aparecida Magosso, Miriam Fátima Soares, Bruno Marco Oliveira Silveira, Ieda Spacino Scarminio, Dílson Norio Ishikawa, Sônia Regina Giancoli Barreto
Published 2018-04-01

Avaliação do risco ambiental em sedimento dos lagos do Riacho Cambé, em Londrina, pela distribuição de metais Avaliation of the environmental risk by metal distribution in sediment...

by Dílson Norio Ishikawa, Renata Zacarias Noale, Thiago Hideyuki Kobe Ohe, Eloana Benassi Ribeiro de Souza, Ieda Spacino Scarmínio, Wagner José Barreto, Sônia Regina Giancoli Barreto
Published 2009-01-01