开幕主题演讲：PFAS 的用途及其替代品：本质和功能替代的应用.pdf

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1、This project has received funding from the European Unions Horizon 2020 research and innovation programme under grant agreement No 101036756.Uses of PFAS and their alternatives:applications of essentiality and functional substitutionIan CousinsStockholm University,SwedenREMTEC&EMERGING CONTAMINANTSS

2、UMMIT,Westminster,Colorado,US,15thOctober 20241/46Waste hierarchyhttps:/zeropm.eu/2/46What are PFAS?Buck et al.(2011)first definition OECD(2021):broader definition“the fluorinated substances that contain at least one fully fluorinated methyl or methylene carbon atom”i.e.substances are PFAS that have

3、 at least one-CF2-or-CF3moiety in their structureused as regulatory definition in the EU universal restriction proposal,but if PFAS are mineralizable then they are exempted US EPA(2023)definition less broad;two connected fluorinated carbonsMany thousands of structurally diverse PFAS in use in societ

4、ypolymers&non-polymers;neutral,anionic,cationic&zwitterionic;solids,liquids&gases;reactive&inert;soluble&insoluble;volatile&involatile;mobile&immobile;bioaccumulative&non-bioaccumulative;highly toxic and relatively non-toxic3/46Volatile neutral PFASPerfluoroalkanes(PFCs),perfluoroethersandperfluoroa

5、lkylaminesCertain hydrofluoro-carbons(HFCs),-ethers(HFEs)and-olefins(HFOs)CAS No.355-04-4CAS No.335-27-3CAS No.338-83-0CAS No.1547-26-8CAS No.15290-77-4CAS No.297730-93-9CAS No.358-21-44/46Involatile anionic PFAS Per-and polyfluoroalkyl acids (PFAAs)Per-and polyfluoroalkyletheracidsCAS No.336-08-3CA

6、S No.375-22-4CAS No.375-73-5CAS No.68555-66-8CAS No.52299-24-8CAS No.52299-25-9CAS No.958445-44-8CAS No.908020-52-0CAS No.1190931-41-9CAS No.73606-19-65/46Fluorinated polymers Fluoropolymers(e.g.PTFE)(F in the backbone)high molecular weight,stable,inert,insoluble,involatile,immobile,do not cross bio