| A method was established for determination of methyl acrylate in air sample.After absorbed by active carbon,methyl acrylate was desorbed by 1 mL of carbon disulfide in 30 min.Subsequently the supernatant was injected into the gas chromatograph and separated by DB 624 column.External standard curve was used to quantitative analysis.The current method showed good linearity in the concentration range from 0.475 mg/L to 38.0 mg/L.The spiking blank experiments were carried out at low,medium and high levels and it showed that the average recoveries ranged from 94.7% to 98.7%,and the relative standard deviations (RSDs) varied from 2.7% to 4.6%.The method determination limit was calculated to be 0.075 μg,and the lowest detectable concentration is 0.05 mg/m3 when the sampling volume is 1.5 L.15 kinds of common compounds in Nanjing Chemical Industrial Zone showed no interference with methyl acrylate,such as acetone,iso propanol,methylene chloride,acrylonitrile,n hexane,cyclohexane,1,2 dichloroethane,benzene,toluene,ethylbenzene,xylene,styrene,chlorobenzene,butyl acetate,n hendecane,et al. Determination of air surrounding environment of an enterprise in Nanjing city with the method, the wind direction and wind to no methacrylate detection. |
