Perfluorooctanoic acid (PFOA) (conjugate base perfluorooctanoate), inozivikanwawo seC8, ndeye synthetic perfluorinated carboxylic acid uye fluorosurfactant.Imwe indasitiri yekushandisa yakaita seyakagadzika mune emulsion polymerization yefluoropolymers.Yakashandiswa mukugadzira zvinhu zvine mukurumbira zvakadai sepolytetrafluoroethylene (inozivikanwa sepolymer).PFOA yakagadzirwa kubva ku1940s muhuwandu hwemaindasitiri.Iyo zvakare inoumbwa nekushatiswa kwe precursors senge mamwe fluorotelomers.
PTFE yanga iri mukushandiswa kwekutengesa kubva kuma1940s.Iine mashandisirwo akasiyana siyana nekuti yakatsiga zvakanyanya (haibatike nemamwe makemikari) uye inogona kupa nzvimbo inenge isina frictionless.Vanhu vazhinji vanozviziva sechinhu chisiri chekuputira pamusoro pepani uye zvimwe zvekubika.Inoshandiswawo mune zvimwe zvakawanda zvigadzirwa, senge machira ekudzivirira.
Perfluorooctanoic acid (PFOA), inozivikanwawo seC8, imwe kemikari yakagadzirwa nevanhu.Inoshandiswa mukugadzira polymer uye makemikari akafanana (anozivikanwa se fluorotelomers), kunyange zvazvo anopiswa panguva yekushanda uye haisipo muhuwandu hunokosha muzvigadzirwa zvekupedzisira.
PFOA ine mukana wekuve nehanya nehutano nekuti inogona kugara munzvimbo uye mumuviri wemunhu kwenguva yakareba.Zvidzidzo zvakawana kuti iripo pasi rose pamazinga akaderera muropa remunhu wese.Huwandu hwepamusoro hweropa hwakawanikwa muvagari venharaunda umo mvura yemuno yakasvibiswa nePFOA.Vanhu vakafumurwa kuPFOA munzvimbo yebasa vanogona kuve nemazinga akapetwa kakawanda.
PFOA uye mamwe makomisheni akafanana anogona kuwanikwa pamazinga akaderera mune zvimwe zvekudya, mvura yekunwa, uye muguruva remumba.Kunyangwe mazinga ePFOA mumvura yekunwa anowanzo kuderera, anogona kunge akakwira mune dzimwe nzvimbo, senge padyo nemakemikari zvidyarwa zvinoshandisa PFOA.
Vanhu vanogona zvakare kuoneswa kuPFOA kubva kune ski wax kana kubva kumachira uye kapeti iyo yakabatwa kuve isingadzivirirwe.Non-stick cookware haisi yakakosha sosi yekuratidzwa kwePFOA.
Zvidzidzo zvakawanda mumakore achangopfuura zvakatarisa mukana wePFOA yekukonzera cancer.Vatsvagiri vanoshandisa 2 mhando huru dzezvidzidzo kuyedza kuona kana chinhu chakadaro chingakonzeresa cancer.
Zvidzidzo murabhoritari
Muzvidzidzo zvakaitwa murabhoritari, mhuka dzinoratidzwa kune chinhu (kazhinji mumadosi makuru kwazvo) kuona kana ichikonzera mapundu kana mamwe matambudziko ehutano.Vatsvagiri vanogona zvakare kufumura masero emunhu mundiro yerabhu kune chinhu kuti vaone kana ichikonzera mhando dzeshanduko dzinoonekwa mumaseru egomarara.
Zvidzidzo mumhuka dzemurabhoritari zvakawana kufumurwa kuPFOA kunowedzera njodzi yemamwe mapundu echiropa, testicles, mammary glands (mazamu), uye pancreas mumhuka idzi.Kazhinji, zvidzidzo zvakanyatsoitwa mumhuka zvinoita basa rakanaka rekufanotaura kuti ndezvipi zvinoratidzira zvinokonzeresa gomarara muvanhu.Asi hazvina kujeka kana nzira iyo kemikari inokanganisa njodzi yegomarara mumhuka ingave yakafanana muvanhu.
Zvidzidzo muvanhu
Mamwe marudzi ezvidzidzo anotarisa huwandu hwegomarara mumapoka akasiyana evanhu.Zvidzidzo izvi zvinogona kuenzanisa huwandu hwegomarara muboka rakafumurwa kune chiyero chegomarara muboka risingaonekwe kwairi, kana kuenzanisa nehuwandu hwegomarara muhuwandu hwevanhu.Asi dzimwe nguva zvinogona kunetsa kuziva kuti mhedzisiro yemhando idzi dzezvidzidzo zvinorevei, nekuti zvimwe zvinhu zvakawanda zvinogona kukanganisa mhedzisiro.
Zvidzidzo zvakatarisa vanhu vakafumurwa kuPFOA kubva pakugara padyo kana kushanda mumiti yemakemikari.Zvimwe zvezvidzidzo izvi zvakaratidza njodzi yakawedzera yegomarara retesticular nekuwedzera kuratidzwa kwePFOA.Zvidzidzo zvakaratidzawo zvinongedzo zvinongedzo kune kenza yeitsvo uye kenza yegomarara, asi kuwedzera kwengozi kwave kudiki uye kungave kwakakonzerwa nemukana.
Zvimwe zvidzidzo zvakaratidza hukama hunogona kuitika kune mamwe magomarara, anosanganisira prostate, dundira, uye kenza yeovarian.Asi hazvisi zvese zvidzidzo zvakawana hukama hwakadaro, uye kumwe kutsvagisa kunodiwa kujekesa izvi zvakawanikwa.
Nguva yekutumira: Nov-02-2017