Saturday, July 18, 2026

Elevated Concentrations of Aldehydes in Older eCigarette Fluids

Recent research by ETOX alumna Dr. Ester Omaiye and Professor Prue Talbot has shown that in many cases the fluid remaining in a heavily used e-cigarette device has a very different and a measurably more toxic chemical profile than fresh e-liquid.  They found that the concentrations of aldehydes such as methylglyoxal (MGO), glyoxal (GO), and formaldehyde were generally higher in the older e-liquids and exhibited increased cytotoxicity.  Their research has recently been featured on the UCR News website.  Our congratulations to Ester and Prue for this recognition of their research.  [The Figure above is from their ACS Omega article.]