Pakhala pali nkhani ina m'nkhani yokhudza mankhwala omwe ali ndi poizoni wotchedwa PFOA. Kodi muyenera kuda nkhawa za PFOA muzitsulo zanu zopanda phokoso ?
PFOA ndi yoperewera kwa perfluorooctanoic acid (yomwe imatchedwanso C8), mankhwala omwe amagwiritsidwa ntchito, kuphatikizapo PTFE , kupanga mapulogalamu ena ogula mankhwala omwe amagwiritsa ntchito fluoropolymer ndi telomer, kuphatikizapo zokutira mapepala osatetezedwa monga Teflon. Zotsatira zake zilibe kapena zikutanthauza kuti PFOA, ndipo Environmental Protection Agency ilibe chidziwitso chokwanira cha mankhwalawa kuti kugwiritsira ntchito mankhwalawa kungayambitse chiopsezo cha umoyo kapena nkhawa.
EPA ndi PTFE
Komabe, chifukwa mankhwalawa amagwiritsidwa ntchito popanga makinawa, amapezeka m'munsi otsika komanso m'magazi a chitsanzo cha anthu a ku United States. Zapezeka kuti zimakhudza chitukuko cha zinyama za laboratory, komanso zotsatira zina zomwe zimakhudza thanzi lawo.
Mu 2004, bungwe la EPA linagwira ntchito motsutsana ndi DuPont (wopanga Teflon), potsutsa kuti sakudziwa kuopsa kwa kuvulaza thanzi la anthu komanso chilengedwe chifukwa cha kufooka kwa PFOA pakati pa 1981 ndi 2001. Chifukwa chake, mu 2005 DuPont anapereka ndalama zokwana madola 10.25 miliyoni potsutsana ndi malamulo a dzikoli.
Mu 2006, bungwe la EPA linayambitsa polojekiti ya PFOA, kuyitanitsa otsogolera 8 omwe akupanga fluoropolymer ndi telomer kuti athetse nawo ntchito ya PFOA kuchokera ku mpweya ndi zomwe zilipo mu 2015. Cholinga choyamba chinali kuchepetsa mpweya ndi PFOA mwa 95 peresenti 2010.
Makampani ambiri, kuphatikizapo DuPont ndi 3M, anakumana kapena apitirira cholinga chimenecho, motero makampaniwa akupita ku cholinga chawo chothetsa kugwiritsa ntchito PFOA kwathunthu.
Zochita za EPA zikuwoneka kuti zikugwira ntchito: Pofika chaka cha 2007, kafukufuku wasonyeza kuti PFOA mwachitsanzo ya magazi a anthu a ku United States (yomwe inasonkhanitsidwa mu 2003-2004) inali ya 25 peresenti yochepa kusiyana ndi yomwe inasonkhanitsidwa mu 1999-2000.
Kodi Muyenera Kuganizira Zomwe Mungagwiritsire Ntchito Zipangizo Zopangira Zokongoletsa?
Bungwe la Food and Drug Administration likuyang'anitsitsa zipangizo zophika zomwe zilipo kwa anthu onse, ndipo pazomwe malemba a EPA amanena za PFOA, adalengeza poyera kuti malonda ake ndi zobvala zosaphimbidwa ndi otetezeka kuti anthu a ku America azigwiritsiridwa ntchito ngati atagwiritsidwa ntchito .
Komabe, pali njira zina zomwe mungathere pogwiritsa ntchito mapepala ophika osakaniza ndi kuphika:
- Musati muwotchedwe chophika chophika ndi bakeware. Teflon ndi zokutira zina zingayambe kugwa pamene kutentha kumafikira 500˚F, ndipo Environmental Working Group yanena kuti zowonjezera zowopsa za khansa zimatulutsidwa pamene mapiko amatha kutentha.
- Pofuna kupewa kutentha, musawononge poto yopanda kanthu, ndipo mugwiritse ntchito kutsika kapena kutentha kwakukulu kokophika.
- Musasiye chophika chowuma kapena chopanda kanthu pamoto wotentha kapena mu ng'anjo yotentha.
- Gwiritsani ntchito zida zamtengo wapatali, mapuloteni ndi mapulasitiki pa poto kuti musamawombera kapena kutseka mapeto.
- Taya mapepala omwe awonongeka mwamsanga.
- Sungani mbalame kuchokera khitchini. Ndi mapepala awo otha kupuma, mbalame zikhoza kudwala, kapena kufa, kuchokera ku zitsulo zopangidwa ndi kuphika, ngakhale pamene zophika zosaphika sizikugwiritsidwa ntchito.
- Musasunge chophika chophimba chosasakanizidwa, kapena ngati mukuchiyika, pepala losanjikiza kapena nsalu yofewa pakati pa mphika kapena poto iliyonse.
Ngati mudakali ndi nkhawa za PFOA, funani zina mwazitsulo zopanda kuphika zopangidwa popanda PFOA, kuphatikizapo Bialetti Aeternum , Swiss Diamond, GreenPan ndi Cuisinart GreenGourmet. (Phunzirani zambiri za eco-friendly zosakonzedwa mapewa )
Werengani zambiri kuchokera ku EPA pa PFOA.