本文提供一种适合聚醚类非离子表面活性剂的定性分析方法:采用高效液相串联高分辨质谱法,以ESI源正离子模式,对聚醚类非离子表面活性剂进行分析.方法具有较高灵敏度及分辨率,测试数据符合正态分布,并提供了精确分子量,可准确计算聚合度.同时给出了烷基酚聚醚和脂肪醇聚醚在高分辨质谱中分子量的体现形式.“,”In this paper,a qualitative analysis method suitable for polyether nonionic surfactants was provided,which was conducted by high performance liquid chromatography tandem high resolution mass spectrometry with ESI source positive mode. With high sensitivity and resolution,the data conform to normal distribution and accurate molecular weight was given,which could accurately calculate the degree of polymerization. And the molecular weight of alkylphenol polyether and aliphatic alcohol polyether in high resolution mass spectrometry was also provided.