Method for measuring content of acetaldehyde in liquid-phase mixture

The invention relates to a method for measuring content of acetaldehyde in liquid-phase mixture. The liquid-phase mixture is mainly prepared from acraldehyde, acrylic acid and acetic acid; butanone is taken as an internal standard; the content of the acetaldehyde in liquid to be measured is analyzed quantitatively by using an internal standard method. The measuring method is low in cost, is easy and convenient to operate, is easy and rapid, is accurate in measuring result, and is high in repeatability. 本发明涉及种测定液相混合物中乙醛含量的方法，液相混合物中主要含有丙烯醛、丙烯酸、乙酸，以丁酮为内标物，内标法定量分析待测液中乙醛的含量。本发明的测定方法成本低，操作简便，方法简单快速，测定结果准确，重复性好。