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R.J.Levins和R.M.Ikeda在1965年提出了用四苯硼化钠直接电位滴定聚乙二醇及其衍生物;随后在1971年R.J.Levins同样利用聚乙二醇、钡和四苯硼化钠生成的(钅羊)盐沉淀这一性质,试制成了钡离子选择电极;殷学锋等成功地应用四苯硼酸根电极以四苯硼化钠滴定钡离子和镀铬液中的硫酸根。我们以氟硼酸根电极为指示电极,在聚乙二醇(PEG—600)存在下,加入过量的钡标准溶液沉淀硫酸根,然后用四苯硼化钠
RJ Levins and RMIkeda proposed the direct potentiometric titration of polyethylene glycol and its derivatives with sodium tetraphenylborate in 1965; subsequently RJLevins was also produced using polyethylene glycol, barium and sodium tetraphenylborate in 1971 (钅 羊) salt precipitation of this nature, trial made into a barium ion selective electrode; Yin Xuefeng successfully applied tetraphenylborate electrode to sodium tetraphenylborate titration of barium ions and chromate sulfate. We use the fluoroborate electrode as the indicator electrode, add excess barium standard solution to precipitate sulfate in the presence of polyethylene glycol (PEG-600), and then use sodium tetraphenylborate