Abstract
The importance of atmospheric hydrogen peroxide (H 2O 2) in the oxidation of SO 2 and other compounds, as well as its possible harmful affects on vegetation, has been well established. In this work, two FIA methods for determining H 2O 2 were compared, and a non-enzymatic method was adapted to analyze the rainwater samples. Measurements of hydrogen peroxide in rain samples were carried out at two different sites during 1993–1995, in the area surrounding a thermal power plant located in the Northwest of Spain. The concentration of H 2O 2 varied from values lower than the detection limit (0.002 μM) to 2.706 μM . The effects of the rainwater components and the meteorological factors in temporal, seasonal and spatial H 2O 2 pattern concentrations were studied.
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