“…PFCAs and PFSAs together are referred to as perfluoroalkyl acids (PFAAs), and thus, their precursors will be herein referred to as PFAA precursors. Due to their ubiquitous usage and recalcitrant nature, PFAS are persistent in the environment and frequently detected in various environmental matrices such as water (Appleman et al, 2014;Guelfo & Adamson, 2018;Hu et al, 2016), biosolids (Alder & van der Voet, 2015;Armstrong, Lozano, Rice, Ramirez, & Torrents, 2016;Navarro et al, 2018;Venkatesan & Halden, 2013), soil (Munoz et al, 2018), plant (Scher et al, 2018) and wildlife (Sedlak, Benskin, Wong, Grace, & Greig, 2017). In addition, PFAS including some long-chain PFCAs and PFSAs can bioaccumulate in aquatic organisms (Babut et al, 2017;Gewurtz et al, 2014;Hong et al, 2015) and may transfer to the food chain.…”