Simple method for visual detection of nitrite using fluorescence and colorimetry by poly (tannic acid) nanoparticles - Xiaohui Hao; Ao Shen; Mengwen Li; Ruochen Duan; Lala Hou; Xiuqing Zhao; Ziqi Li; Yongwei Zhao; Panqing Zhang; Xuebing Wang; Xue Li; Yunxu Yang (Analytica Chimica Acta, 2023)