Fluorosurfactante

Fluorosurfactantes o per- o polyfluoroalkylate substantias (PFAS), son compositos chimic organofluorate synthetic tenente multiple fluor atomos. Son sovente qualificate de "polluentes eternal" (forever chemicals (FC) in anglese).

Se distingue compositos polyfluorate e perfluorate.

Son plus effective pro abassar le tension superficial de aqua que comparabile surfactantes organic. Illos ha un "cauda" fluorate hydrophobe e un "capite" hydrophile.

Alcun fluorosurfactantes, como PFOS, son detectate in alimentoshttps://www.rtbf.be/article/pollution-aux-pfas-les-habitants-des-communes-concernees-invites-a-ne-pas-consommer-oeufs-et-legumes-produits-localement-un-numero-vert-active-11284620https://www.lyoncapitale.fr/actualite/des-polluants-eternels-detectes-dans-les-oeufs-de-12-communes-de-la-metropole-de-lyon, humaneshttps://france3-regions.francetvinfo.fr/auvergne-rhone-alpes/haute-savoie/enquete-polluants-eternels-du-pfoa-detecte-dans-le-sang-des-habitants-de-rumilly-en-haute-savoie-2880197.html e altere organismos vivente.

Typos
Un database sul toxicitate del Agentia per le Protection del Ambiente de Statos Unite (EPA), DSSTox, lista 14'735 PFAS, "List consists of all DTXSID records with a structure assigned, and using a set of substructural filters based on community input." e PubChem usque circa 6 miliones.

Exemplos de PFAS:https://www.aulss8.veneto.it/nodo.php/3440|titolo=Azienda ULSS 8 Berica: Pfas - Sostanze Perfluroalchiliche
 PFOA acido perfluorooctanoic
 PFOS perfluorooctansulfonato
 PFBA acido perfluorobutanoic
 PfHxA acido perfluoroesanoic
 PFBS acido perfluorobutansulfonic
 PFNA Perfluorononanoato de ammonio
 C6O4 ammonio ((2,2,4,5-tetrafluoro-5-(trifluorometossi)-1,3-diossolan-4-il)ossi) difluoro acetato
 GenX 2,3,3,3-tetrafluoro-2-(eptafluoropropossi)-propanoato de ammonio
 Cl-PFPE-CA Chloroperfluoropolyether carbossilato
 PTFE o Polytetrafluoroethylene, cuje le Teflon AF.

Sanitate
Un exposition recurrente e durabile al PFAS pote inducer un risco pro sanitate.https://www.auvergne-rhone-alpes.ars.sante.fr/mieux-comprendre-les-pfas-leurs-effets-les-textes-applicables#:~:text=Les%20compos%C3%A9s%20PFAS,aux%20fortes%20chaleurs%20et%20imperm%C3%A9abilisantes.

Le  prime studios in medio professional revelava nivellos importante de productos chimic fluorate, principalmente acido perfluorooctanesulfonic (PFOS) e acido perfluorooctanoic (PFOA, C8), in sanguine del operatores, ma sin detectar alcun effecto nocive, le dosas essente inferior al nivellos identificate como toxic o cancerogene in animales.Le sulfonate de perfluorooctane (SPFO), ses sels et ses précurseurs – fiche d’information ; 
Governamento canadian, 2006.. Nonobstante, le contamination individual essente quasipermanente (semivita de elimination seric del PFAS inter 4 e 5 annos) e le contamination ambiental essente generalisate, un accumulation se produce in corpore human usque dosas potente esser nocive pro sanitate.


Categoria:Compositos organofluorate
Categoria:Pollution