Publications by authors named "Yoan Carreira Mendes Da Silva"
Article Synopsis
- The study reveals that hydrogen peroxide (HO) is spontaneously produced at the liquid-ice interface when freezing dilute salt solutions, including various salts like NaCl and NaI.
- The rate of HO production correlates with salt concentration and aligns with the Workman-Reynolds freezing potential (WRFP) values, suggesting a connection between salt concentration and hydrogen peroxide formation.
- The mechanism involves the self-recombination of hydroxyl radicals (OH·) created by the high electric field at the aqueous-ice interface, with oxygen potentially enhancing radical production, leading to increased HO generation.
There is now much evidence that OH radicals and HO 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 HO production. Droplets were generated via nebulization of water solutions containing NaSO, NaCl, NaBr, and NaI containing solutions, and HO was monitored as a function of the salt concentration under atmospheric relevant conditions.
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