色谱法测定烷烃和芳烃在高碳烷烃中的亨利系数

Determination of Henry's Coefficients for Alkanes and Aromatic Hydrocarbons in High-Carbon Alkanes by Chromatography

用气相色谱法测定了50℃～100℃下烷烃和芳烃分别在正十六烷、正十七烷、正二十烷、正二十四烷、正三十烷中的亨利系数，考虑了固定液流失量和气相非理想性的校正。讨论了亨利系数H与溶质碳数和溶剂碳数之间的关系。结果证明：亨利系数随着溶质碳数和溶剂碳数的增加而减少。

Henry's coefficients of alkanes and aromatic hydrocarbons in n-hexadecane, n-hep-tadecane, n-eicosane, n-tetracosane, n-triacontane at 50~ 100℃ were determined by gas chromatog-raphy. The method of calculating the loss of stationary phase and the correction for non-ideality of gasphase were studied. The relations between the Henry's coefficients vs. solute carbon number as well assolvent carbon number have been studied respectively. The results show that lnH of alkanes and aro-matic hydrocarbons decreases with the increase of solute carbon number and solvent carbon number.