[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.