1. Sensors for Detecting Humic Substances and Heavy Metal Complexes in Waters
- Author
-
A. Firmino, C.E. Borato, F. L. Leite, Luiz H. C. Mattoso, Wilson Tadeu Lopes da Silva, and Osvaldo N. Oliveira
- Subjects
Materials science ,Morphology (linguistics) ,Atomic force microscopy ,Doping ,Analytical chemistry ,Ion ,Metal ,chemistry.chemical_compound ,Adsorption ,chemistry ,Chemical engineering ,visual_art ,visual_art.visual_art_medium ,Lignin ,Spectroscopy - Abstract
The interaction between poly(o-ethoxyaniline) (POEA) adsorbed onto solid substrates and humic substances (HS) and Cu/sup 2+/ ions has been investigated with UV-VIS spectroscopy and atomic force microscopy. Both HS and Cu/sup 2+/ cause the POEA film to be further doped, and alter the film morphology. This interaction was exploited in a sensor array made of nanostructured films of POEA, sulfonated lignin and HS, which could detect small concentrations of HS and Cu/sup 2+/ in water.
- Published
- 2006
- Full Text
- View/download PDF