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首页> 外文期刊>Electroanalysis >Plastic membrane selective electrode for cetirizinium ion based on cetirizinium-tetraphenylborate ion-pair
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Plastic membrane selective electrode for cetirizinium ion based on cetirizinium-tetraphenylborate ion-pair

机译：基于西替利嗪四苯基硼酸酯离子对的西替利嗪离子塑料膜选择电极

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摘要

New cetirizinium (Cet) ion selective PVC membrane electrodes of both conventional and coated graphite types based on the ion-pair of cetirizine with tetraphenylborate are prepared. Both electrodes exhibited a mean calibration plot slope of 66.8 mV/(Cet) concentration decade, at 25 degrees C, within the concentration range 3.16 x 10(-5)-3.16 x 10(-3) mol dm(-3) Cet-HCl2. The change of pH within the range (1.5-2.8) for 1.0 x 10(-3) mol dm(-3) and 1.0 x 10(-4) mol dm(-3) solutions and (2.25-3.25) for 1.0 x 10(-2) mol dm(-3) solution does not affect the electrode performance. Outside the working pH-ranges, the potential value decreases due to formation of diprotonated species on the acidic side and to formation of the free base on the alkaline side. The standard electrode potentials are determined at different temperatures and used to calculate the isothermal coefficient of the electrode (0.000875 V/degrees C). The electrode shows a very good selectivity for Cet-HCl2 with respect to a large number of inorganic cations and sugars where selectivity coefficients ranging between 7.0 x 10(-)5 and 3.1 x 10(-3) were obtained. The standard addition method is successfully applied to determine Cet-HCl2 in pure solutions and in cetirizine dihydrochloride-containing tablets. [References: 10]
机译：基于西替利嗪与硼酸四苯酯的离子对，制备了常规和涂覆石墨类型的新的西替利嗪（Cet）离子选择性PVC膜电极。两个电极在25°C下的浓度范围3.16 x 10（-5）-3.16 x 10（-3）mol dm（-3）Cet-均显示66.8 mV /（Cet）浓度十年的平均校准图斜率。盐酸pH值在1.0 x 10（-3）mol dm（-3）和1.0 x 10（-4）mol dm（-3）溶液的范围（1.5-2.8）和1.0 x 10（-4）mol dm（-3）的溶液的范围内（2.25-3.25） 10（-2）mol dm（-3）溶液不会影响电极性能。在工作pH范围之外，由于在酸性侧形成了双质子化物质，而在碱性侧形成了游离碱，因此电势值降低。在不同温度下确定标准电极电位，并将其用于计算电极的等温系数（0.000875 V /℃）。电极对大量的无机阳离子和糖显示出对Cet-HCl2的非常好的选择性，而选择性系数在7.0 x 10（-）5和3.1 x 10（-3）之间。标准添加方法已成功应用于纯溶液和含西替利嗪二盐酸盐片剂中的Cet-HCl2测定。 [参考：10]

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