![]() ![]() The sample of test solution and control solution was respectively injected into headspace, and the injection was repeated at least 3 times. The headspace equilibrium temperature was 901C and the equilibrium time was 4 to 5 minutes. The headspace sample of the system suitability test solution was taken, and the detection sensitivity was adjusted so that the peak height of ethylene oxide peak and acetaldehyde peak was 15% of the full range, the separation degree of acetaldehyde peak and ethylene oxide peak was not less than 2.0, and the peak height of dioxane ring should be more than 5 times of the baseline noise. The headspace equilibrium temperature was 70☌ and the equilibrium time was 45 minutes. The inlet temperature was 150 ☌ and the detector temperature was 25(TC. At 230☌ for 5 minutes (can be adjusted according to specific conditions). The temperature was heated to 180 ☌ at the rate of 5☌ per minute, and then 30X per hour. Using polydimethylsiloxane as fixative, the initial temperature was 50 ☌ and maintained for 5 minutes. Gas chromatography (general Rule 0521) test. The solution was sealed and shaken well to be used as the system suitability test solution.
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