Objective:To establish a method for the determination of ethylene oxide and dioxane in nonoxinol-9 by headspace gas chromatography.Methods:A capillary column with 6％cyanopropylphenyl-94％dimethylpolysiloxane as stationary phase was used.The hydrogen flame ionization detector(FID)was used with nitrogen as the carrier gas.Determination was done under programmed temperature rise.The contents of each component were calculated by a standard addition method.Results:All components in blank or sample had no interference to the determination of ethylene oxide and dioxane,and the recovery rates were high.Conclusion:This method has high sensitivity and low matrix effect,and can be used to quantitatively control ethylene oxide and dioxane in nonoxinol.
关键词
标准加入法/毛细管色谱柱/气相色谱法/顶空进样/残留溶剂
Key words
Standard addition method/Capillary chromatographic column/Gas chromatography/Headspace sampling/Residual solvent
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