Ukumbozwa kwe-polymer noma i-polytetrafluoroethylene ku-cookware kukhiqiza indawo engaqinile.Itholakala iminyaka engaphezu kwengu-60, i-polymer isiza ukuvimbela amaqanda nama-pancake ukuthi anganamatheli ku-skillet.Ngeshwa, i-polymer coating iyakhumuka uma iklwejwa yizitsha zasekhishini ezinomphetho oqinile noma amaphedi okukhuhla abrasive.Okunye ukukhathazeka kufaka i-perfluorooctanoic acid noma i-PFOA, ikhemikhali esetshenziswa njengosizo lokucubungula i-polymer.Kuxhunyaniswe nomdlavuza ezilwaneni zaselabhu.Kodwa-ke, i-cookware ehlanganiswe nge-polymer ibhekwa njengephephile ukuyisebenzisa, noma iklwetshiwe.
Sekuyiminyaka kwaziwa kabanzi ukuthi ukuchayeka komuntu ku-PFOA kuphansi kakhulu ngaphansi kwezimo ezijwayelekile zokusebenzisa i-cookware engenazinti.Umbiko wocwaningo osanda kukhishwa wenkampani yangaphandle ethenjwayo, i-Consumer Reports, uphinde waqinisekisa ukuthi ubungozi bokusetshenziswa kwamapani angagxili buphansi kakhulu, futhi buyancipha.“Ama-Consumer Reports ahlole amapani angagxili avela kubakhiqizi abahlukahlukene ukuze ahlole ukuphepha kwamapani amasha nasetshenzisiwe ekushiseni okungu-204 C (400 F) futhi athola ukuthi ukukhishwa kwe-PFOA bekukuncane.“Izinga eliphakeme kakhulu lalingaphansi ngokuphindwe izikhathi eziyikhulu kunalolo ucwaningo lwezilwane olusikisela ukuthi lihlobene nokuchayeka okuqhubekayo ku-PFOA,” kubika lomagazini kumagazini ka-June."Ngamapani amadala, ukukhishwa kwekhabhoni bekungenakulinganiswa."I-Health Canada ithe izimbotshana ezinganamatheli ziphephile ukuthi zisetshenziswe emazingeni okushisa angaphansi kuka-350 C (662 F).Kodwa, i-ejensi yombuso ithe ngokushisa okuphezulu, kungase kukhishwe intuthu ecasulayo noma enobuthi. ”
Amaphuzu ongacabanga ngawo:
Uma upheka emazingeni okushisa angaphezu kuka-500 F, amafutha okupheka avamile namafutha akhona, noma cishe azofika maduzane, "iphuzu elikhanyayo."Ngakho-ke, udala ingozi enkulu yomlilo wamafutha futhi ukhipha ukudla kanye namafutha, futhi ngaleyo ndlela ukhipha intuthu kanye nomhwamuko okungenzeka ube yingozi empilweni yakho neyesilwane sakho esifuywayo, kungakhathaliseki ukuthi hlobo luni lweipaniusebenzisa!
Amakhemikhali afana ne-PFOA engezwa ekugxiliseni okuphansi kakhulu kuma-fluoro-polymers ayimpuphu ukusiza izimpushana ze-polymer ezingabambeki zinamathele, ongqimbeni olulinganayo, kumapani asanda kugxivizwa, okuphonswa, noma okuphothiwe, ngaphambi "kokubhaka" okungagxili. ukwakhiwa kwe-polymer.Ngalesi sigaba sokubhaka sokwenziwa kwe-cookware, inqwaba yama-emulsifiers afana ne-PFOA ayinsalela ayiswa ohlelweni lokukhipha intuthu esuka kuhhavini wokukhiqiza izinga lokushisa eliphezulu.Kulapho izilawuli zomhwamuko zidingeka khona ukuze kuncishiswe ukuchayeka emsebenzini.
Ukuqoqwa okusabalele kwe-bio ye-PFOA kanye ne-PFOA-efana nezinhlobo zezinhlobo eziningi ezinegazi elifudumele emhlabeni wonke cishe kungenzeka kubangelwe kakhulu ezitsheni zokupheka.Akuyona yonke imiphakathi ekwazi ngisho nokufinyelela ezintweni zokupheka ezinganamathi!Kufanele sibheke enye i-PFOA njengokusetshenziswa kokuphela kwezinto ukuze sinqume ukuthi ukuchayeka kwezilwane okubalulekile kuvelaphi.
Isikhathi sokuthumela: Apr-26-2017