| Autor: |
Tobias J. Sherbow, Grace M. Kuhl, Grace A. Lindquist, Jordan D. Levine, Michael D. Pluth, Darren W. Johnson, Sean A. Fontenot |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Sensing and Bio-Sensing Research, Vol 31, Iss , Pp 100394- (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2214-1804 |
| DOI: |
10.1016/j.sbsr.2020.100394 |
| Popis: |
We have prepared and characterized hydrosulfide-selective ChemFET devices based on a nitrile butadiene rubber membrane containing tetraoctylammonium nitrate as a chemical recognition element that is applied to commercially available field-effect transistors. The sensors have fast (120 s) reversible responses, selectivity over other biologically relevant thiol-containing species, detection limits of 8 mM, and a detection range from approximately 5 to 500 mM. Sensitivities are shown to be 53 mV per decade at pH 8. Use of this compact, benchtop sensor platform requires little training – only the ability to measure DC voltage, which can be accomplished with a conventional multimeter or a simple analog data acquisition device paired with a personal computer. To the best of our knowledge, this report describes the first example of direct potentiometric measurement of the hydrosulfide ion in water. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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