【摘要】 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。更多还原

【Abstract】 Here we report a new all solid state quining selective electrode. This electrode is based on the association complex of Cr6+ ,KSCN, NH3 and quitting. The behavior of the electrode is evaluated as fol- low;Nernst response tp quining ranges between 1 .0×10-1～ 1 .0×10-5mol/L with a slope of43 mV/pC. The detection limit is 7.5×10-6~mol/L. While pH is at 3.60～6. 12,the change of the electrode response dean’ t exceed ± 1 mV. The electrode has fast respons and good reproducibility. The procedures of this method arc simple and the results obtained accord with those of pharmacopoeia.更多还原