用薄层色谱分析非离子性表面活性剂已有许多报道,Armstrong用反相KC18F板,以乙醇/水(80:20)为流动相分离了三种不同亲油基的非离子性表面活性剂。关于非离子表面活性剂中游离PEG的测定,用HPLC方法有很多报道,但用RPTLC方法却未见报道。本文用E.Merck硅烷化预制硅胶板,以甲醇/水混合物为流动相,不仅能区分亲油基不同的非离子表面活性剂,而且能区分分子量不同的PEG,并 There have been many reports of nonionic surfactants by thin layer chromatography. Armstrong has isolated three different lipophilic nonionic surfactants using reversed-phase KC18F plates with a mobile phase of ethanol / water (80:20) . There have been many reports about the determination of free PEG in non-ionic surfactants by HPLC method, but no report has been reported by RPTLC method. In this paper, E. Merck silanized pre-silica gel plates, methanol / water mixture as the mobile phase, not only can distinguish different lipophilic nonionic surfactants, and can distinguish between different molecular weight PEG, and