▎ 摘　　要

NOVELTY - Use of tea leaf extract in detecting of sulfate radical, is claimed. USE - The tea leaf extract is useful for detecting free radical of sulfate radical, where the free radical is useful in the environment and health field, such as purification of polluted water. ADVANTAGE - The method enables to detect sulfate radical, which is not limited by pH value of system, and can be carried out under the condition of acid, middle and alkaline condition, and overcomes the problem that the chemical luminescence technology is limited by medium pH value when detecting free radical, and has good application prospect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for method for detecting sulfate radical comprising using tea extract as luminous reagent, and detecting the sulfate radical in the system.