摘要目的 建立工作场所空气中甲基丙烯酸乙酯(EMA)的溶剂解吸-气相色谱法.方法 活性炭管采集空气中EMA,经二硫化碳解吸,色谱柱分离,氢火焰离子化检测器检测.结果 EMA质量浓度在0.00~9 108.00 g/mL呈线性关系,相关系数为0.999 96;批内精密度相对标准偏差为0.55%~1.84%,批间精密度相对标准偏差为1.26%~3.30%;平均解吸效率为98.26%~100.58%;平均采样效率为99.98%~100.00%;最低检出质量浓度为0.03 mg/m3,最低定量质量浓度为0.10 mg/m(3 以采集3.00 L空气计).EMA样品在室温下可保存7 d.结论 本法可用于工作场所空气中EMA的采样和检测.

abstractsObjective 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/m3 and 0.10 mg/m3 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.