现代电位分析法
Modern potentiometry.
作者信息
Bakker Eric, Pretsch Ernö
机构信息
Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA.
出版信息
Angew Chem Int Ed Engl. 2007;46(30):5660-8. doi: 10.1002/anie.200605068.
Abstract
For most chemists, potentiometry with ion-selective electrodes (ISEs) primarily means pH measurements with a glass electrode. Those interested in clinical analysis might know that ISEs, routinely used for the determination of blood electrolytes, have a market size comparable to that of glass electrodes. It is even less well known that potentiometry went through a silent revolution during the past decade. The lower detection limit and the discrimination of interfering ions (the selectivity coefficients) have been improved in many cases by factors up to 10(6) and 10(10), respectively, thus allowing their application in fields such as environmental trace analysis and potentiometric biosensing. The determination of complex formation constants for lipophilic hosts and ionic guests is also covered in this Minireview.
摘要
对于大多数化学家而言，使用离子选择性电极（ISE）进行电位分析法主要指的是用玻璃电极测量pH值。从事临床分析的人员可能知道，常用于测定血液电解质的ISE，其市场规模与玻璃电极相当。甚至鲜为人知的是，电位分析法在过去十年经历了一场悄无声息的变革。在许多情况下，检测下限和干扰离子的辨别能力（选择性系数）分别提高了高达10⁶和10¹⁰倍，从而使其能够应用于环境痕量分析和电位生物传感等领域。本综述还涵盖了亲脂性主体和离子客体的配合物形成常数的测定。
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