Objective: To establish a method to determine the salicylaldehyde in Filipendula ulmari by gas chromatography (GC). Method: By using GC

RTX-1701 column (0.25 mm×30 m

0.25 μm) was analyzed with FID detector. The detector and sample inlet temperature were set at 250 ℃. The temperature programming began at 70 ℃ and increased to 105 ℃ at the rate of 1 ℃ · min-1 with in 10 min and then to 250 ℃ at the rate of 15 ℃ within 15 min. Nitrogen was the carrier gas and flew at the rate of 1 mL · min-1. Split sampling was adopted

with the split ratio of 80: 1 and sample size of 1 μL. Result: The linear ranges for salicylaldehyde were 0.191 7-1.917 0 g · L-1(r=0.999 9)

with the average recovery of 100.12%(RSD 2.5%). Conclusion: The method is simple

accurate and highly reliable and so can be used for the determination of salicylaldehyde in F. ulmari.