An rGO-modified all-solid-state tetracaine-selective microsensor with enhanced interfacial stability for rapid pharmaceutical analysis
Ayman H. Kamel, Huda M. Al-Radhi, Hisham S. M. Abd-Rabboh · 2026
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Description
Kamel and colleagues built a 2026 microsensor that measures tetracaine, a local anesthetic used in eye medicines, quickly and cheaply for quality checks. The sensor stacks a reduced graphene oxide layer, a form of carbon sheet, on a carbon electrode under a selective plastic membrane that responds to tetracaine. They compared it against an identical sensor without the graphene layer.
The graphene version answered almost ideally across a wide concentration span and detected tetracaine down to trace levels below one micromole per liter. It also held its signal steadier, repeated better between sensors, and resisted the water film that degrades such devices. It ignored common salts, related drugs, and filler ingredients, and worked across the acidity range of eye products. In commercial eye formulations it recovered between about ninety-nine and one hundred two percent of the known content.
Catalog record
| CREATOR | Ayman H. Kamel, Huda M. Al-Radhi, Hisham S. M. Abd-Rabboh |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 50 KB |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |