Terrestrial Atmospheric and Oceanic Sciences
Hydrogen peroxide was produced when samples of lake water were exposed to direct or filtered sunlight in which UV or UV(B+C) light was selectively removed. In all cases, the concentration of hydrogen peroxide increased linearly with time-integrated irradiance. While both visible and UV light can induce the formation of hydrogen peroxide, the contribution from the latter was disproportionately large as it was responsible for about two-thirds of the formation of hydrogen peroxide. Among the UV lights, the contributions from UV-A and UV-(B+C) light were 70% and 30% respectively. The contribution from UV-A light was equivalent to about one half of the total production of hydrogen peroxide. Thus, relative to its contribution to the total irradiance in the solar spectrum, UV-A light is the most efficient type of light for the formation of hydrogen peroxide in lake waters.
Original Publication Citation
Wong, A. Y. L., & Wong, G. T. F. (2001). The effect of spectral composition on the photochemical production of hydrogen peroxide in lake water. Terrestrial Atmospheric and Oceanic Sciences, 12(4), 695-704.
Wong, Andrea Y. L. and Wong, George T. F., "The Effect of Spectral Composition on the Photochemical Production of Hydrogen Peroxide in Lake Water" (2001). OEAS Faculty Publications. 194.