Abstract
The effect of an electron beam on the toxic microalgae Cochlodinium polykrikoides and Alexandrium catenella, which are involved in the phenomenon of seawater blooming known as red tides, has been studied. This annual disaster causes mass intoxication and death of marine life. Electron-beam irradiation at an absorbed dose of to 1 kGy leads to inactivation of more than 2/3 of the microalgae population due to disruption of cell walls, damage to chloroplasts, and cell aggregation. Radiolysis destroys paralytic toxins, including the most dangerous of them. Because of low doses and the ease of irradiation, the electron-beam treatment of water can be a promising method for the inactivation and detoxification of phytoplankton involved in red tides.
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