High-temperature potentiometry: modulated response of ion-selective electrodes during heat pulses.
High-temperature potentiometry: modulated response of ion-selective electrodes during heat pulses.
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DOI：
10.1021/ac902191h
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发表时间：
2009-12-15
影响因子：
7.4
通讯作者：
Wang, Joseph
中科院分区：
文献类型：
--
作者：
Chumbimuni-Torres, Karin Y.;Thammakhet, Chongdee;Galik, Michal;Calvo-Marzal, Percy;Wu, Jie;Bakker, Eric;Flechsig, Gerd-Uwe;Wang, Joseph
这里首次引入局部加热聚合物膜电位传感器的概念。这是在全固态传感器配置中实现的，利用聚（3-辛基噻吩）作为离子选择性膜和集成加热电路的底层基板之间的中间层。温度脉冲电位计 (TPP) 可提供方便的峰形分析信号，并通过这些传感器提供额外的维度。预计许多进步将有利于该领域。加热步骤显示，每 10 倍活性变化，铜选择性电极的斜率从 31 mV 增加到 43 mV，在 10 µM 铜水平下加热电位脉冲的重现性为 1%，电位漂移为 0.2 mV/h。重要的是，加热电极时电势脉冲的大小随着铜活性的变化而变化，这为这些设备的差分测量提出了一种有吸引力的方法。热脉冲还被证明可以将检测限降低半个数量级。
The concept of locally heated polymeric membrane potentiometric sensors is introduced here for the first time. This is accomplished in an all solid state sensor configuration, utilizing poly(3-octylthiophene) as intermediate layer between the ion-selective membrane and underlying substrate that integrates the heating circuitry. Temperature pulse potentiometry (TPP) gives convenient peak-shaped analytical signals and affords an additional dimension with these sensors. Numerous advances are envisioned that will benefit the field. The heating step is shown to give an increase in the slope of the copper-selective electrode from 31 mV to 43 mV per 10-fold activity change, with a reproducibility of the heated potential pulses of 1% at 10 µM copper levels and a potential drift of 0.2 mV/h. Importantly, the magnitude of the potential pulse upon heating the electrode changes as a function of the copper activity, suggesting an attractive way for differential measurement of these devices. The heat pulse is also shown to decrease the detection limit by half an order of magnitude.
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影响因子：
7.4
作者：
CADOGAN, A;GAO, ZQ;DIAMOND, D
通讯作者：
DIAMOND, D
影响因子：
7.4
作者：
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影响因子：
4.3
作者：
Lau, C;Reiter, S;Gründler, P
通讯作者：
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影响因子：
6.1
作者：
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通讯作者：
Tian, BM
影响因子：
7.4
作者：
Lai, Chun-Ze;Fierke, Melissa A.;Buehlmann, Philippe
通讯作者：
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