 In this study, researchers developed a new type of electrochemical sensor based on Magnetic Fade 304 at MPC nanochains. The sensor was able to detect heavy metals such as mercury and lead at low concentrations. The sensor's unique structure allowed it to have a high specific surface area and a large number of pores which enhanced its sensitivity. This article was authored by Yu Jilu, Xiyou Wu, Wei Xiong, and others.