Detection of ethylhexylglycerin

Gas chromatograph, column is HT-5 capillary column (35 m × 0. 32 mm × 0.25 μm), heater 350 °C, FID detector. Gas chromatographic operating conditions: split ratio 100: 1, temperature rise 120 °C for 2 min, 10 °C · L / min, rise to 300 °C, injection volume 0. 5 μL. The injector was washed twice with alcohol and then replaced three times with the sample, and the needle was slowly pushed upwards for each replacement for complete replacement. Under the above chromatographic conditions, after the baseline of the instrument is stabilized, the sample is injected and the content of the product is obtained by the area normalization method.