Field studies on ozone inactivation of a Gymnodinium breve toxin.

Water samples were collected from Boca Ciega Bay (St. Petersburg) during the April, 1974, red tide that occurred on the Florida west coast. The causative agent of this phenomenon was the toxic dinoflagellate, Gymnodinium breve. The toxic red tide samples were treated with ozone gas and rendered nonlethal, as measured by mouse injection.