In this study, the early stage development of Japanese medaka (Oryzias latipes)was used to assess the toxic effects of potassium permanganate and its byproduct Mn2+ in the drinking water process. Results showed that the 96-h LC50 for potassium permanganate (LC50-96h)was 1.48mg·L-1 in the acute exposure and the 30-d lowest observed effect concentration (LOEC30d)regarding to incubation time was 0.1mg·L-1 in the chronic exposure. In chronic exposure, significant changes in length, weight and cumulative mortali...
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