[Determination of ethyl methacrylate in workplace air by solvent desorption-gas chromatography]

Objective: To develop a solvent desorption-gas chromatography method for determination of ethyl methacrylate(EMA) in workplace air. Methods: EMA in workplace air was captured by charcoal tubes and desorbed with carbon disulfide, separated through capillary chromatographic column, and then analyzed by gas chromatography-flame ionization detector. Results: The linear ranges of EMA were 0.00-9108.00 mg/L, and the related coefficients were 0.999 96. The relative standard deviations(RSD) within the group were 0.55%-1.84%, and the RSD between the group were1.26%-3.30%. The average desorption efficiencies were 98.26%-100.58%. The average samplingefficiencies were 99.98%-100.00%. and the minimum detectable concentration and the minimum quantification concentration were respectively 0.03 mg/m(3) and 0.10 mg/m(3) per 3.00 L of air. The samples could be stored at room temperature for 7 days. Conclusion: This method could be used formonitoring of EMA in workplace air.