GC Determination of Neral and Geranial in Volatile Oil of Micromeria Biflora

The volatile oil of Micromeria biflora. was extracted by steam distillation, and the contents of neral and geranial in volatile oil were determined by GC with flame ionization detector (FID). Linearity ranges of neral and geranial found were between 0.097 1-0.582 6 g·L-1 and 0.115 2-0.691 2 g·L-1 respectively. The proposed method was applied to the analysis of samples from 4 batches of volatile oil of Micromeria biflora., giving the results as follow: 25.00%, 29.57%, 26.30%, 28.59% for neral and 36.41%, 43.80%, 38.72%, 41.52% for geranial.