Simultaneous determination of formaldehyde and ethylene oxide in maskby headspace gas chromatography
To establish a new method for the determination of formaldehyde and ethylene oxide content in mask by head-space gas chromatography,and determined by headspace gas chromatography with FID detector.The equilibrium tempera-ture and time of headspace were set at 70℃and 20 min.The analyte was separated on InertCap AQUATIC capillary chro-matographic column.External standard method was used for quantitative determination of formaldehyde and ethylene oxide content.The coefficient of the linear regression equation were 0.999 4(formaldehyde)and 0.999 0(ethylene oxide)within the linear range of 1.00-100 μg/g of formaldehyde and ethylene oxide.The limit of quantitation was 1.0 μg/g(formalde-hyde)and 1.8 μg/g(ethylene oxide),the relative standard deviation(RSD)was less than 5.0%,according to the sampling volume of 1.0 g.Tests for recovery were made by standard addition method,giving values of recovery in the range of 90%-110%.The method is simple,rapid,accurate and stable,and is suitable for the determination of formaldehyde and ethylene Oxide in mask.
FormaldehydeEthylene oxideHeadspace Gas ChromatographyMask
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