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<abstract language="eng">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 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

química nova

Determinação do coeficiente de atividade na diluição infinita (&lt;FONT FACE=Symbol&gt;g&amp;yen;&lt;/FONT&gt;) através da micro-extração em fase sólida (SPME)