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Furfural and guaiacol were analyzed with DE-413L.

Sample : 20micro-L
1. 10ppm Furfural (2-Furaldehyde)
2. 10ppm Guaiacol (alpha-Methoxyphenol)

Column       : Shodex RSpak DE-413L (4.6mmID*250mm)
Eluent       : 2mM HClO4 aq./CH3CN=50/50
Flow rate    : 1.0mL/min
Detector     : UV(210nm)
Column temp. : 40deg-C