1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No. 2019, Jialuo Rd, Shanghai 201800, China. zhangbowu@foxmail.com wangwenfeng@sinap.ac.cn.
Herein, we report for the first time the enhanced oxidation properties of tetrazolium salts induced by UV-irradiation, and demonstrate that there is real deviation in the photo-induced superoxide anion radical assay based on tetrazolium salts.