Ratiometric fluorescence immunoassay based on PtPdRu trimetallic nanozyme with enhanced oxidase-like activity for sensitive detection of xylazine

Liang Luo, Zizhe Li, Qiang Li, Qiyuan Zhao, Xiaonan Wang, Ghulam Mujtaba Mari, Jianzhong Shen, Xuezhi Yu, Zhanhui Wang, Yantong Pan, Jijun Kang