气相色谱法测定气体样品中丙烯酸甲酯  

Determination for Methyl Acrylate in Air Sample by Gas Chromatography

作　　者：王美飞[1] 李阳[1] 胡恩宇[1] 刘晶[1] 杨丽莉[1] 

机构地区：[1]南京市环境监测中心站,江苏南京210013

出　　处：《环境监测管理与技术》2015年第3期56-58,共3页The Administration and Technique of Environmental Monitoring

基　　金：国家高新科技发展"八六三"计划基金资助项目(2012AA063303)

摘　　要：采用活性炭吸附气体样品中的丙烯酸甲酯,用二硫化碳浸泡解吸30 min后,取上清液进样,用气相色谱法FID检测器测定。方法在0.475 mg/L^38.0 mg/L范围内线性良好,空白活性炭采样管的3个浓度水平加标回收率为94.7%~98.7%,测定结果的RSD为2.7%~4.6%,方法检出限为0.075μg,当采集1.5 L气体样品时,最低检测质量浓度为0.05 mg/m3。以南京化学工业园区常见的15种化合物做干扰试验,结果方法稳定性好,测定不受干扰。用该方法测定南京市某企业周边环境空气,结果上风向和下风向丙烯酸甲酯均未检出。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 con-centration is 0.05 mg /m3 when the sampling volume is 1 .5 L.1 5 kinds of common compounds in Nanjing Chemi-cal Industrial Zone showed no interference with methyl acrylate,such as acetone,iso-propanol,methylene chlo-ride,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.

关 键 词：丙烯酸甲酯 气相色谱法 气体样品 

分 类 号：O657.71[理学—分析化学]