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- Posts: 5
- Joined: Fri Jul 23, 2010 10:36 pm
I want to dissolve vinyl chloride gas into DI water and measure it in GC hP6890-FID system. I purchased a 14 L gas cylinder which is 100ppm vinyl chloride in nitrogen and a gas regulator with syringe adapter in it. When I prepare the VC solution, I opened the gas cylinder valve and turn the knob in regulator to adjust flow. After 30seconds I insert my gastight syringe and take out 1mL gas and then inject to 20ml vial full with water through septum. But I couldn't find the peak for vinyl chloride for this solution, either with headspace or purge&trap method. Could anyone tell me any wrong operation in this process? Since VC is less soluble in water, how can I dissolve it fully in water and how long will it take to fully dissolve in water? Thanks very much!