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首次使用六价铬与硫氰化钾、氨水形成的络和物作为沉淀剂，使其与奎宁形成分子缔合物，获得全新的电活性物，制备了一种新型的盐酸奎宁选择电级。电级的线性响应范围为 １．０ × １０－１ｍｏｌ／Ｌ～１．０ｘ１０－５ｍｏｌ／Ｌ，级差为４３ｍＶ／ｐｃ，电极的检测限为７．５×１０－６ｍｏｌ／Ｌ。ｐＨ值在３．６０－６．１２ 范围内，电势随ｐＨ变化不超过±１ｍＶ。该电极制作简便、操作灵活，重现性好，结果与药典法相符。
The first use of hexavalent chromium and potassium thiocyanate, ammonia and the formation of the complex as a precipitating agent, making it with quinine molecular association, to obtain a new electroactive substance, prepared a new quinine hydrochloride selective electrode level. The linear response range was 1.0 × 10-1mol / L ~ 1.0x10-5mol / L with the level difference of 43mV / pc. The detection limit of the electrode was 7.5 × 10-6mol / L. The pH is in the range of 3.60-6.12 and the potential does not vary by more than ± 1mV with pH. The electrode is easy to manufacture, flexible in operation and good in reproducibility, and the result is consistent with Pharmacopoeia.