Metal Oxides and Ion-Exchanging Surfaces as pH Sensors in Liquids: State-of-the-Art and Outlook.

Metal Oxides and Ion-Exchanging Surfaces as pH Sensors in Liquids: State-of-the-Art and Outlook.
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DOI:
10.3390/s90604955
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发表时间:
2009
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Kurzweil P
Kurzweil P
中科院分区:
其他
文献类型:
--
作者:
Kurzweil P

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在温度从-35°C到130°C的技术和生物介质中,在线pH测定的新应用需要新的pH监测方法,这些介质几乎都是理想的水溶液。近百年前引入的玻璃电极和基于场效应晶体管(ISFET)的化学传感器在处理和长期稳定性方面显示出特定的缺陷。质子敏感金属氧化物似乎是最先进的测量方法的一种很有前途的替代方法,可能会克服经典氢电极和参比电极的一些问题。
Novel applications of online pH determinations at temperatures from -35 °C to 130 °C in technical and biological media, which are all but ideal aqueous solutions, require new approaches to pH monitoring. The glass electrode, introduced nearly hundred years ago, and chemical sensors based on field effect transistors (ISFET) show specific drawbacks with respect to handling and long-time stability. Proton sensitive metal oxides seem to be a promising and alternative to the state-of-the-art measuring methods, and might overcome some problems of classical hydrogen electrodes and reference electrodes.
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