title: Inactivation of Giardia lamblia cysts with ozone.
abstract: Giardia lamblia cysts were inactivated in water with ozone at pH 7.0 and 5 and 25 degrees C. The concentration-time products for 99% inactivation were 0.53 and 0.17 mg-min/liter at 5 and 25 degrees C, respectively. These products were significantly lower than those reported for chlorine.
mesh_terms: D000818:Animals; D002713:Chlorine; D004202:Disinfectants; D005243:Feces / Q000469:parasitology; D005872:Giardia; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010126:Ozone; D013696:Temperature; D013997:Time Factors; D014876:Water Pollution / Q000517:prevention & control; D014881:Water Supply
chemical_list: D004202:Disinfectants; D002713:Chlorine; D010126:Ozone