Recognition of several branched amines with smell-seeing sensitive array

A method of developing Smell-seeing sensitive arrays is presented. The sensitive arrays are then used to recognize and discriminate five branched amines: dimethylamine, trimethylamine, diethylamine, triethylamine and diisopropylamine. The results show that the sensitive array's image response patterns upon the five amines with similar structure and property are highly special to each other, which can be discriminate even by eyesight. A further PCA analysis shows that the Smell-seeing sensitive array can discriminate even the class differences among methylamine, ethylamine and propylamine.