2023
DOI: 10.26434/chemrxiv-2023-53g68
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A turn-off fluorescent sensor for metal ions quantifies corrosion in an organic solvent

Lianlian Liu,
Zechariah Pfaffenberger,
Mark Seigel
et al.

Abstract: We demonstrate that the corrosion of AISI 1045 medium carbon steel and pure aluminum can be quantified by the turn-off fluorescent sensor Phen Green-SK (PGSK) in ethanol-based solutions. We first evaluate the dependence of the chelation enhanced quenching of PGSK on iron and aluminum ion concentrations. Subsequently, we apply PGSK to examine the anodic dissolution of metal corrosion. The observed time-dependent PGSK-quenching quantifies the corrosion rates of two metals over 24-hours of immersion in ethanol-ba… Show more

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