دورية أكاديمية
Sensors for Acid-Base-Active Gases
| العنوان: | Sensors for Acid-Base-Active Gases |
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| المؤلفون: | Maier, Joachim, Holzinger, Michael, Sitte, Werner |
| المصدر: | MRS Proceedings ; volume 369 ; ISSN 0272-9172 1946-4274 |
| بيانات النشر: | Springer Science and Business Media LLC |
| سنة النشر: | 1994 |
| الوصف: | The theoretical background for potentiometric and conductometric (bulk and surface) sensors is briefly discussed with regard to the usual application, viz. the detection of redox-active gases, and the importance of understanding chemical diffusion is stressed in this context. It is then shown how the analogous concept applied to acid-base interactions leads to powerful possibilities to measure partial pressures of acid-base active gases such as CO 2 , NH 3 and H 2 O. Two examples of novel sensor principles are discussed: i) The response of the surface ionic conductivity of AgCl or CaF 2 upon changes of partial pressures of (Lewis) basic or acid gases can be used to sense NH 3 and BF 3 . ii) In the major part of the paper it is shown how the deliberate use of overall acid-base cell reactions in potentiometric arrangements leads to a fast and precise CO 2 -sensor. For this purpose, open reference electrodes based on Na 2 Ti 6 O 13 or Na 2 SnO 3 have been constructed. Owing to the criteria developed in the text the whole cell can be exposed to a CO 2 and O 2 containing atmosphere without the necessity of sealing. Detailed results are given. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1557/proc-369-613 |
| الإتاحة: | https://doi.org/10.1557/proc-369-613Test https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1946427400357840Test |
| حقوق: | https://www.cambridge.org/core/termsTest |
| رقم الانضمام: | edsbas.7CCD06E2 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1557/proc-369-613 |
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