Abstract: Atomic characteristic value f i of aliphatic alcohols were defined and calculated for QSPR research of aliphatic alcohols, then topological parameter and hydrogen line index H were acquired by the technique of molecule graphics and AM1. QSPR for estimating olfactory thresholds ( POL ) of aliphatic alcohols were achieved based on multiple regression. The regression equations were proposed. The mean error between estimated values and experimental value of 50 aliphatic alcohols is
0. 46 ,while the olfactory thresholds of other 49 aliphatic alcohols molecules were predicted by the regression equation , the mean error is 0. 67. The result s show that the model developed can make a better agreement among estimated values ,predicted values and experimental value.

Key words: Aliphatic alcohols , Topological parameter , QSPR , Olfactory thresholds , Hydrogen line index

摘要： 为了研究脂肪醇的构效关系,定义并计算了脂肪醇中原子的特征值f _i ，利用量子化学AM1 算法和分
子图形学技术获得了分子拓扑参数和氢谱指数H，基于多元回归技术获得了对脂肪醇味阀值作出精确估算的定量结构- 性质相关关系，得到多元回归方程，对50 个脂肪醇分子味阀值估算的平均误差为0. 46 。利用方程对另外49个脂肪醇分子的味阀值进行预测，预测的平均误差为0. 67，估算值、预测值与实验值较为吻合。

关键词: 脂肪醇 , 拓扑参数 , 定量结构- 性质相关性 , 味阀值 , 氢谱指数