Otro
Determination of copper in different ethanolic matrices using a chloropropyl silica gel modified with a nanostructured cubic octa(3-aminopropyl)octasilsesquioxane
Registro en:
Journal of Chemistry.
2090-9063
2090-9071
10.1155/2013/509341
WOS:000320804000001
2-s2.0-84880149478.pdf
2-s2.0-84880149478
Autor
Do Carmo, Devaney Ribeiro
De Oliveira Bicalho, Urquisa
Silveira, Tayla Fernanda A.
Dias Filho, Newton Luiz
Lataro Paim, Leonardo
Resumen
The chloropropyl silica gel was modified with octa(3-aminopropyl) octasilsesquioxane and characterized by Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR), spectroscopies, and surface and area porosity. The specific sorption capacity of metallic ions (Cu2+ and Ni2+) increases in the following solvent order: water < ethanol 42% < ethanol < ketone. The high values of the constant (K) in the order of 103 L mol-1 suggested the high adsorbent capacity of the modified silica (SGAPC) for Cu2+ and Ni2+. SGAPC was applied to a separation column and shows recoveries of around 100% of copper in samples of sugar cane spirit, vodka, ginger brandy, and ethanol fuel. © 2013 Devaney Ribeiro Do Carmo et al.