Spatio-temporal distribution of hydrogen peroxide in river water in Japan with respect to environmental factors

Abstract

River water samples were collected from Chiba prefecture to Fukuoka prefecture and the concentration of hydrogen peroxide was measured. The measurement of hydrogen peroxide was performed by HPLC-fluorescence detection method.As a result, the concentration in the river water was several tens to several hundreds nM, the highest and lowest concentrations were observed in the Yamato River (Osaka prefecture + Nara prefecture) and the Ota River (Hiroshima prefecture), respectively.The regression analysis revealed that the dissolved organic carbon concentration and the combination of solar radiation and water temperature mainly determined the hydrogen peroxide concentration.