Nicolas Estoppey is a postdoctoral researcher at the Norwegian Geotechnical Institute (NGI), Oslo, Norway. He holds a master's degree in Forensic Science from the University of Lausanne (UNIL), Switzerland. He completed a PhD at the UNIL during which he developed passive sampling-based strategies to investigate pollution sources in surface water, in collaboration with the Swiss Federal Institute of Technology in Lausanne (EPFL). He was then lecturer at the UNIL and implemented large-scale monitoring campaigns of hydrophobic contaminants (PCBs, PBDEs, PAHs) in Lake Geneva basin. He has participated in acquiring a better mechanistic understanding of passive samplers for hydrophilic contaminants (pesticides, pharmaceuticals, explosives). Currently - in the frame of the LEX4BIO project - he is assessing the risk caused by the (potential) presence of microplastics and organic contaminants (e.g., PFAS) in bio-based fertilizers.