Dr. Zhenjie Zhao is a postdoctoral researcher at the University of Massachusetts Amherst, specializing in environmental chemistry with a focus on trace elements, isotopes, emerging contaminants, and micro/nano-plastics. He holds a Ph.D. in Environmental Science from the Chinese Academy of Sciences and has held positions as an assistant professor at Guizhou Medical University and a postdoctoral researcher at CNRS, France. He is a member of the American Geophysical Union (AGU) and the American Chemical Society (ACS).