在Ba~(2+)存在下,用银电极为指示电极,四苯硼钠(NaTPB)直接电位滴定聚乙二醇(PEG)或它的衍生物,已由Levins报道,并通过试验阐明PEG600～4000与钡及四苯硼酸根的缔合物是化学计量的,即5.22单位氧化乙烯(EOU)与1M的TPB′和0.5MBa~(2+)结合生成大分子沉淀物。 1979年K.Vytras评述了用NaTPB电位滴定一价阳离子,随后,殷学锋等利用这一反应,在非离子型表面活性剂PEG存在下,用NaTPB滴定钡。本文研究了以NaTPB滴定钡与PEG形成的大(钅羊) The direct electrodeposition of polyethylene glycol (PEG) or its derivative with sodium silver electrode as the indicator electrode in the presence of Ba 2+ has been reported by Levins and the effect of PEG600 ~ 4000 The association with barium and tetraphenyl borate is stoichiometric, ie 5.22 units of ethylene oxide (EOU) combine with 1M TPB ’and 0.5MBa ~ (2+) to form macromolecule precipitates. In 1979, K.Vytras reviewed titration of monovalent cations with NaTPB potentials. Subsequently, Yin et al. Used this reaction to titrate barium with NaTPB in the presence of nonionic surfactant PEG. In this paper, NaTPB titration with barium and PEG formed large (goat)