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有关奎宁及其盐类的非水溶液滴定法,文献有許多报道。Pifer等在冰醋酸溶液中,以高氯酸的二恶烷溶液电位滴定硫酸奎宁;黄为华等在冰醋酸溶液中以結晶紫为指示剂,用高氯酸的冰醋酸溶液滴定硫酸奎宁、盐酸奎宁及优奎宁等,該法并为中国药典1963年版所采用,湯騰汉等以醋酐-硝基苯(1:1)为溶剂,結晶紫作指示剂,用高氯酸的冰醋酸液直接滴定奎宁、硫酸奎宁。此后相继有对奎宁及其复方制剂非水溶液滴定法的研究报道。但以上方法在观察滴定終点上均有一定的困难。黄
Quinine and its salts for non-aqueous titration, the literature has many reports. Pifer et al. In glacial acetic acid solution titration of quinine sulfate with perchloric acid in dioxane solution Potassium azide sulfate titrated with perchloric acid in glacial acetic acid using yellow crystal as indicator, Quinine hydrochloride and excellent quinine, etc., the law and the Chinese Pharmacopoeia 1963 edition adopted by Tang Han and other acetic anhydride - nitrobenzene (1: 1) as a solvent, crystal violet as an indicator of the use of perchloric acid Glacial acetic acid solution titrated quinine, quinine sulfate. Since then have been on the quinine and its non-aqueous compound titration method reported. However, the above method in the observation of titration have some difficulties on the end. yellow