Back to Search
Start Over
Solid-Contact Potentiometric Anion Sensing Based on Classic Silver/Silver Insoluble Salts Electrodes without Ion-Selective Membrane.
- Source :
- Membranes; Dec2021, Vol. 11 Issue 12, p959-959, 1p
- Publication Year :
- 2021
-
Abstract
- Current solid potentiometric ion sensors mostly rely on polymeric-membrane-based, solid-contact, ion-selective electrodes (SC-ISEs). However, anion sensing has been a challenge with respect to cations due to the rareness of anion ionophores. Classic metal/metal insoluble salt electrodes (such as Ag/AgCl) without an ion-selective membrane (ISM) offer an alternative. In this work, we first compared the two types of SC-ISEs of Cl<superscript>−</superscript> with/without the ISM. It is found that the ISM-free Ag/AgCl electrode discloses a comparable selectivity regarding organic chloride ionophores. Additionally, the electrode exhibits better comprehensive performances (stability, reproducibility, and anti-interference ability) than the ISM-based SC-ISE. In addition to Cl<superscript>−</superscript>, other Ag/AgX electrodes also work toward single and multi-valent anions sensing. Finally, a flexible Cl<superscript>−</superscript> sensor was fabricated for on-body monitoring the concentration of sweat Cl<superscript>−</superscript> to illustrate a proof-of-concept application in wearable anion sensors. This work re-emphasizes the ISM-free SC-ISEs for solid anion sensing. [ABSTRACT FROM AUTHOR]
- Subjects :
- SILVER salts
ELECTRODES
ANIONS
WEARABLE technology
SILVER
Subjects
Details
- Language :
- English
- ISSN :
- 20770375
- Volume :
- 11
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Membranes
- Publication Type :
- Academic Journal
- Accession number :
- 154423735
- Full Text :
- https://doi.org/10.3390/membranes11120959