Abstract: The gas chromatography quantitative analysis conditions of gum rosin were studied by selection of chromatographic columns and chromatographic resolution conditions with the pure rosin sample of P.kesiya var. langbinanensis (A.Chev.)Gaussen.This analysis method could accurately determine the relative percentage content of rosin resin acid. The analysis results were better in stability, accuracy and reproducibility by statistical error test of Grubb's method. The same conclusions were obtained from rosin quantitative analyses of P.massoniana Lamb. and P.elliottii Engelm.

Key words: gum rosin, gas chromatography, quantitative analysis, statistical error test