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提出用气相色谱相对比保留体积（Vg（r））估算多环芳烃蒸汽压。测定了5种多环芳烃在9种麦克雷诺常数固定相上的Vg（r），用饱和气流法测定其在25℃时蒸汽压（P°），建立了lgP°与1／Vg（r）的回归方程，用该方程估算多环芳烃的P°，绝对值平均误差4．3％，9个方程估算同一多环芳烃，相对标准偏差18．5％。固定相极性对回归方程的相关性无明显影响。讨论了不同估算方法误差。
Proposed gas chromatography relative retention volume (Vg (r)) to estimate the polycyclic aromatic hydrocarbons vapor pressure. The Vg (r) of five kinds of polycyclic aromatic hydrocarbons (PAHs) were determined on nine stationary phases of McReynolds. The vapor pressure (P °) at 25 ℃ was measured by the saturated gas flow method and lgP ° and 1 / Vg The equation was used to estimate the P ° of polycyclic aromatic hydrocarbons, with an average absolute error of 4.3%. The nine equations estimated the same polycyclic aromatic hydrocarbons with a relative standard deviation of 18.5%. The polarity of the stationary phase had no significant effect on the correlation of the regression equation. Discuss the error of different estimation methods.