用顶空-色谱法测VAE乳液中残余单体醋酸乙烯含量  

Determination of residual VAM in VAE by headspace GC

作　　者：王明勇[1] 

机构地区：[1]中国石化集团四川维尼纶厂分检车间,重庆401254

出　　处：《天然气化工—C1化学与化工》2009年第3期24-26,共3页Natural Gas Chemical Industry

摘　　要：将乙酸乙烯酯-乙烯共聚乳液(VAE)样品装入顶空取样瓶中,置于顶空自动进样器内,待瓶中气液两相平衡后,取其上部气体进行色谱分析,以正丙醇作内标,峰面积定量,即可测定VAE残余单体醋酸乙烯(VAM)含量,所测结果的相对误差仅为1.76%。用该方法分析VAE乳液中的残余单体醋酸乙烯可获得满意的结果。The vinyl acetate/ethylene copolymer emulsion （VAE） sample was put into a headspace sampling bottle, and then the bottle was parked into the auto sample injector, and after the vapor-liquid equilibrium was reached the upper gas of the bottle was extracted for GC analysis using n-propanol as internal standard, and the residual vinyl acetate monomer （VAM） was quantified by peak area. The relative error of results was only 1.76%. Residual VAM in VAE could be determined by headspace GC satisfactorily.

关 键 词：顶空-色谱 乙酸乙烯酯-乙烯共聚乳液(VAE) 残余单体醋酸乙烯(VAM) 

分 类 号：TQ65[化学工程—精细化工]