Jump to content

Substaintí sár- agus polafhluarailcile

Ón Vicipéid, an chiclipéid shaor.
Tá SSPFA le fáil i rudaí coitianta,mar shampla ar chóta atá uiscefhriotaíoch

Is comhdhúile ceimiceacha sintéiseacha orgánafluairín iad substaintí sár- agus polafhluarailcile (SSPFA) (Béarla: per- and polyfluoroalkyl substances (PFAS nó PFASs)) a bhfuil adaimh iolracha fluairín acu ceangailte le slabhra ailcile. Mar sin, tá ar a laghad earra sárfhluarailcile amháin iontu,–C n F 2n –. [1][2]

Aigéad perfluorooctanesulfonic

De réir na hEagraíochta um Chomhar agus Fhorbairt Eacnamaíochta (ECFE): [3][4]

PFASs are defined as fluorinated substances that contain at least one fully fluorinated methyl or methylene carbon atom (without any H/Cl/Br/I atom attached to it), i.e. with a few noted exceptions, any chemical with at least a perfluorinated methyl group (–CF3) or a perfluorinated methylene group (–CF2–) is a PFAS.

Is substaint thocsaineach iad na SSPA,[5] agus ag éirí uileláithreach.[6]

Naisc sheachtracha

[cuir in eagar | athraigh foinse]
  1. "Perfluoroalkyl and polyfluoroalkyl substances in the environment: terminology, classification, and origins" (October 2011). Integrated Environmental Assessment and Management 7 (4): 513–41. doi:10.1002/ieam.258. PMID 21793199. 
  2. "Zürich Statement on Future Actions on Per- and Polyfluoroalkyl Substances (PFASs)" (August 2018). Environmental Health Perspectives 126 (8): 84502. doi:10.1289/EHP4158. PMID 30235423. 
  3. OECD: Reconciling Terminology of the Universe of Per- and Polyfluoroalkyl Substances: Recommendations and Practical Guidance Error in Webarchive template: Empty url., OECD Series on Risk Management, No. 61, OECD Publishing, Paris, 2021, p. 23.
  4. Wang (2021-11-09). "A New OECD Definition for Per- and Polyfluoroalkyl Substances". Environmental Science & Technology 55 (23): 15575–15578. doi:10.1021/acs.est.1c06896. PMID 34751569. Bibcode2021EnST...5515575W. 
  5. "What are PFAS and how are they dangerous for my health? — European Environment Agency" (en). www.eea.europa.eu. Dáta rochtana: 2023-08-02.
  6. Ian T. Cousins*, Jana H. Johansson, Matthew E. Salter, Bo Sha, and Martin Scheringer (2022). "Outside the Safe Operating Space of a New Planetary Boundary for Per- and Polyfluoroalkyl Substances (PFAS)". Dáta rochtana: 2023.