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单词	superoxide
释义	superoxide /suːpərˈɒksʌɪd / noun Chemistry An oxide containing the anion O2−.In pure water irradiated by ultrasound under aerobic conditions, it is possible to find free oxygen and hydrogen, hydrogen peroxide and superoxide, nitrous and nitric acids.... Although the most common anion formed by oxygen is monatomic, oxygen can also form diatomic ions known as peroxides and superoxides (monovalent). Catalase acts as a free radical scavenger by neutralizing superoxide radical anion and hydrogen peroxide.
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