Dr. Hao Chen is specializing in the identification, characterization, and environmental fate of emerging contaminants, with a particular focus on per- and polyfluoroalkyl substances (PFAS). Leveraging cutting-edge high-resolution mass spectrometry (HRMS) techniques, Dr. Chen's research aims to unravel the complex environmental behaviors of these emerging contaminants, from their sources and distribution patterns to their transformation pathways in natural and engineered systems. Currently affiliated with Nankai University, Dr. Chen employs advanced HRMS platforms (e.g., LC/GC-QTOF, LC/GC-Orbitrap) coupled with non-targeted screening strategies to detect and structurally elucidate emerging PFAS homologues and their degradation byproducts in environmental matrices. His work has significantly improved the understanding of PFAS occurrence in understudied compartments such as atmospheric aerosols, sediment-water interfaces, and biotransformation of polyfluoroalkyl compounds. Dr. Chen has published over 50 SCI papers (1560 citations, 21 h-index, see details at https://orcid.org/0000-0002-6152-1075, https://www.researchgate.net/profile/Hao-Chen-345/research), including 15 papers as the first or corresponding author in high-impact journals (e.g., Environmental Science & Technology, Water Research). He serves as a reviewer for EST, WR, JHM, etc .