SciELO - Scientific Electronic Library Online

 
vol.29 número6Polipeptídeos e proteínas com influência na qualidade da espuma da cerveja e métodos analíticos utilizados no seu estudoEstresse oxidativo, lesões no genoma e processos de sinalização no controle do ciclo celular índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Química Nova

versão impressa ISSN 0100-4042

Resumo

SILVA, Maria do Carmo Hespanhol da et al. Aqueous biphasic systems: an efficient alternative for extraction of ions. Quím. Nova [online]. 2006, vol.29, n.6, pp. 1332-1339. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40422006000600031.

Solvent extraction has been successfully applied to metal ion preconcentration and often meant the use of toxic organic diluents. However, regulatory pressure is increasingly focusing on the use and disposal of organic solvents, and thus the development of nonhazardous alternatives is important. In this review, we examine the application of aqueous biphasic systems (ABS) to extraction of ions, analyzing their potential and limitations and suggest that ABSs could be an efficient substitute for oil/water biphasic systems. ABSs are formed by mixing certain inorganic salts and water-soluble polymers, or by mixing two water-soluble polymers.

Palavras-chave : aqueous biphasic system; metal ions; green chemistry.

        · texto em Português     · pdf em Português