Influence of key parameters on the lower detection limit and response function of solvent polymeric membrane ion-selective electrodes
Influence of key parameters on the lower detection limit and response function of solvent polymeric membrane ion-selective electrodes
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DOI：
10.1016/s0022-0728(00)00488-5
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发表时间：
2001-03-23
影响因子：
4.5
通讯作者：
Pretsch, E
中科院分区：
文献类型：
--
作者：
Ceresa, A;Sokalski, T;Pretsch, E
传统的聚合物膜离子选择性电极（ISE）的检测下限是由测量离子从传感器膜释放到含水样品中给出的。通过使用适当组成的内溶液，可以大大改善它。最近，稳态模型计算已被用来预测的响应函数和检测下限的各种参数的影响。其中，在本工作中已经研究了内溶液的组成、样品中干扰离子的存在、流通池的使用、伊势膜的聚合物含量和厚度以及膜组分的浓度的影响。所有观察到的趋势都与理论上预测的一致。(C)2001 Elsevier Science B.V. Ali版权所有。
The lower detection limit of conventional polymeric membrane ion-selective electrodes (ISEs) is given by the release of measuring ions from the sensor membrane into the aqueous sample. It can be greatly improved by using inner solutions of appropriate composition. Recently, steady-state model calculations have been used to predict the influence of various parameters on the response function and the lower detection limit. Among these, effects of the composition of the inner solution, the presence of interfering ions in the sample, the use of a flow-through cell, the polymer content and thickness of the ISE membrane, and the concentration of the membrane components have been investigated in the present work. All observed trends agree frilly with the theoretically predicted ones. (C) 2001 Elsevier Science B.V. Ali rights reserved.