Separation and Determination of Ethyl Acrylate and Methyl Methacrylate in Ambient Air by Gas Chromatography

Ethyl acrylate and methyl methacrylate in ambient air was captured by activated carbon then desorbed with CS₂ and analyzed by gas chromatography. The recoveries were 86.4%～103.0% for ethyl acrylate and 86.3%～101.2% for methyl methacrylate, the coefficients of variation were 4.1%～4.4% for ethyl acrylate and 4.4%～4.9% for methyl methacrylate. The minimum detectable concentration was 0.02 mg/m³ and 0.01 mg/m³ for ethyl acrylate and methyl methacrylate respectively, while 20 L ambient air was collected.