Ultrasensitive and rapid electrochemical detection of nitrite based on gold nanoparticles-poly(phenylboronic acid) modified electrode and I2/I− probe - Xuedong Jia; Hongyuan Guo; Xiu Zhao; Ruining Liu; Xiayu Song; Zhuo Shi; Yingchun Zhu; Suozhu Wu (Food Chemistry, 2025)