Determinação do coeficiente de atividade na diluição infinita (g¥) através da micro-extração em fase sólida (SPME)

Douglas B. Fonseca, Gerson L. V. Coelho
2007 Química Nova  
Recebido em 11/8/06; aceito em 16/2/07; publicado na web em 24/7/07 DETERMINATION OF ACTIVITY COEFFICIENTS AT INFINITE DILUTION THROUGH SOLID PHASE MICROEXTRACTION (SPME). In this study a new approach, solid phase micro extraction (SPME), is used in the evaluation of the infinite dilution activity coefficient of the solute in a given solvent. It is the purpose of the current work to demonstrate a different approach to obtain the data needed for studying the solution thermodynamics of binary
more » ... amics of binary liquid mixtures as well as for designing multi-component separations. The solutes investigated at the temperature 298.15 K were toluene, ethyl benzene and xylene in the solvent methanol.
doi:10.1590/s0100-40422007000700020 fatcat:rkil3u7uffen7af2kafshabije