Simultaneous Determination of Migration Levels of 1,3-dioxolane and Trioxane in Food Contact Materials Using Headspace-gas Chromatography
A method has been developed to simultaneously determine the migration levels of 1,3-dioxolane and trioxane in food contact materi-als using headspace-gas chromatography.The method involves headspace injection with a 10%ethanol solution as the simulant,separation on an Agilent DB-624 column,detection using an FID detector,and quantification using an external standard method.The headspace and gas chromatography operating conditions were optimized.The results showed that 1,3-dioxolane and trioxane exhibit good linear relationships with-in the concentration ranges of 0.05～5 mg/L and 0.5～10 mg/L,respectively,with correlation coefficients(r)greater than 0.999.At three dif-ferent spiked levels,the recovery rates of the samples ranged from 97.1%to 104.4%,with a relative standard deviation(RSD)between 2.1%and 9.6%.The method is simple to operate and provides accurate and reliable results,enabling the simultaneous determination of the migration levels of 1,3-dioxolane and trioxane in food contact materials.
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