Quantification and Mechanistic Investigation of the Spontaneous H₂O₂ Generation at the Interfaces of Salt-Containing Aqueous Droplets.

ABSTRACT: There is now much evidence that OH radicals and H₂O₂ are spontaneously generated at the air-water interface of atmospheric aerosols. Here, we investigated the effect of halide anions (Cl^-, Br^-, I^-), which are abundant in marine aerosols, on this H₂O₂ production. Droplets were generated via nebulization of water solutions containing Na₂SO₄, NaCl, NaBr, and NaI containing solutions, and H₂O₂ was monitored as a function of the salt concentration under atmospheric relevant conditions. The interfacial OH radical formation was also investigated by adding terephthalic acid (TA) to our salt solutions, and the product of its reaction with OH, hydroxy terephthalic acid (TAOH), was

SUBMITTER: Angelaki M 

PROVIDER: S-EPMC10979748 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature