NgoSepthemba 28, 2023, i-US Environmental Protection Agency (EPA) yaphothula umthetho wokubikwa kwe-PFAS, owasungulwa yiziphathimandla zase-US esikhathini esingaphezu kweminyaka emibili ukuze kuthuthukiswe Uhlelo Lokusebenza lokulwa nokungcoliswa kwePFAS, ukuvikela impilo yomphakathi, kanye nokukhuthaza ubulungiswa bezemvelo. Kuwuhlelo olubalulekile kumephu yomgwaqo wamasu we-EPA we-PFAS, Ngaleso sikhathi, isizindalwazi esikhulu kunazo zonke esake saba khona se-perfluoroalkyl kanye ne-perfluoroalkyl substances (PFAS) esakhiwe futhi sisetshenziswa e-United States sizonikezwa i-EPA, abalingani bayo, kanye nomphakathi.
Okuqukethwe okuqondile
I-US Environmental Protection Agency (EPA) ishicilele imithetho yokugcina yokubika nokugcinwa kwamarekhodi we-perfluoroalkyl kanye ne-perfluoroalkyl substances (PFAS) ngaphansi kweSigaba 8 (a) (7) soMthetho Wokulawulwa Kwezinto Eziwubuthi (TSCA). Lo mthetho udinga ukuthi abakhiqizi noma abangenisi be-PFAS noma i-PFAS equkethe izinto ezikhiqiziwe (kuhlanganise nezingenisiwe) kunoma yimuphi unyaka kusukela ngo-2011 kumele banikeze i-EPA imininingwane ngokusetshenziswa kwabo, ukukhiqizwa, ukulahlwa, ukuchayeka, kanye nezingozi phakathi kwezinyanga eziyi-18-24 ngemuva kokusebenza komthetho. , futhi amarekhodi afanelekile kufanele agcinwe kungobo yomlando iminyaka emi-5. Izinto ze-PFAS ezisetshenziswa njengezibulala-zinambuzane, ukudla, izithasiselo zokudla, izidakamizwa, izimonyo, noma izisetshenziswa zezokwelapha zikhululekile kulesi sibopho sokubika.
Izinhlobo ezi-1 ze-PFAS ezihilelekile
Izinto ze-PFAS ziyikilasi lezinto zamakhemikhali ezinezincazelo ezithile zesakhiwo. Yize i-EPA ihlinzeka ngohlu lwezinto ze-PFAS ezidinga izibopho zesaziso, uhlu aluphelele, okusho ukuthi umthetho awubandakanyi uhlu oluthile lwezinto ezikhonjiwe. Esikhundleni salokho, ihlinzeka kuphela ngenhlanganisela ehlangabezana nanoma yiziphi izakhiwo ezilandelayo, ezidinga izibopho zokubika ze-PFAS:
R - (CF2) - CF (R ′) R ″, lapho i-CF2 ne-CF kokubili kuyikhabhoni egcwele;
R-CF2OCF2-R ', lapho u-R no-R' kungaba ngu-F, O, noma ikhabhoni egcwele;
I-CF3C (CF3) R'R, lapho u-R 'no-R' kungaba ngu-F noma ikhabhoni egcwele.
2 Izinyathelo zokuqapha
Ngokwezigaba 15 no-16 ze-US Toxic Substances Control Act (TSCA), ukwehluleka ukuhambisa ulwazi ngokuhambisana nezimfuneko zokulawula kuzobhekwa njengesenzo esingekho emthethweni, ngaphansi kwezijeziso zomphakathi, futhi kungase kuphumele ekushushisweni kobugebengu.
I-BTF iphakamisa ukuthi amabhizinisi ahlanganyele emisebenzini yohwebo ne-United States kusukela ngo-2011 kufanele alandelele ngokuqhubekayo amarekhodi okuhweba amakhemikhali noma izinto, aqinisekise ukuthi imikhiqizo iqukethe izinto ze-PFAS ezihlangabezana nencazelo yesakhiwo, futhi afeze ngesikhathi izibopho zawo zokubika ukuze agweme izingozi zokuhambisana.
I-BTF ikhumbuza amabhizinisi afanelekile ukuthi aqaphe eduze isimo sokubuyekezwa kwemithetho ye-PFAS, futhi ahlele ukukhiqizwa nokusha kwezinto ezibonakalayo ngokunengqondo ukuze kuqinisekiswe ukuthi imikhiqizo iyahambisana. Sinethimba lezobuchwepheshe elizolandelela intuthuko yakamuva kumazinga okulawula futhi likusize ekuthuthukiseni uhlelo lokuhlola olufaneleka kakhulu. Sicela ukhululeke ukuxhumana nathi.
Isikhathi sokuthumela: Dec-28-2023
