Which are the mechanism and the kinetic of the reduction of bromates to bromides in water, by UV irradiation?

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Jean-Luc Boudenne

Bromides are known to be oxydized into bromates by UV irradiations (Huang et al., 2008: Journal of Environmental Sciences 20, 246–251).

To my knowledge, only ozone (and chlorine and bromine) can oxidize bromide into bromates.As explanation, you can find as attached file the spectra of bromates, and emissions wavelengths of low- and high-pressure UV lamps.

The only possibility of reducing bromates into bromides with UV needs the presence of reducing reagents (such as sulfites). See Jung's paper (Chemosphere 117,663–672, 2014.

Valeria Fiandra

Thank you Jean-Luc!