Perfluorooctanoic acid (PFOA) (conjugate tushe perfluorooctanoate), kuma aka sani da C8, wani roba perfluorinated carboxylic acid da fluorosurfactant.Ɗaya daga cikin aikace-aikacen masana'antu shine a matsayin surfactant a cikin emulsion polymerization na fluoropolymers.An yi amfani da shi wajen kera irin waɗannan fitattun kayan masarufi kamar polytetrafluoroethylene (wanda aka fi sani da polymer).An kera PFOA tun daga shekarun 1940 a yawan masana'antu.Hakanan yana samuwa ta hanyar lalacewa na precursors kamar wasu fluorotelomers.
PTFE yana cikin amfani da kasuwanci tun shekarun 1940.Yana da fa'ida iri-iri na amfani saboda yana da matuƙar tsayayye (ba ya amsa da sauran sinadarai) kuma yana iya samar da ƙasa mara ƙarfi.Yawancin mutane sun saba da shi a matsayin farfajiyar da ba ta da sanda don kwanon rufi da sauran kayan dafa abinci.Hakanan ana amfani dashi a cikin wasu samfuran da yawa, kamar masu kare masana'anta.
Perfluorooctanoic acid (PFOA), kuma aka sani da C8, wani sinadari ne na mutum.Ana amfani da shi wajen yin polymer da makamantansu (wanda aka sani da fluorotelomers), ko da yake an ƙone shi a lokacin tsari kuma ba a cikin adadi mai yawa a cikin samfurori na ƙarshe.
PFOA yana da yuwuwar zama damuwa na kiwon lafiya saboda yana iya zama a cikin yanayi da kuma cikin jikin ɗan adam na dogon lokaci.Nazarin ya gano cewa yana samuwa a duk duniya a cikin ƙananan matakan a kusan jinin kowa.An sami mafi girman matakan jini a cikin mazaunan al'umma inda PFOA ta gurɓata ruwan sha na gida.Mutanen da aka fallasa zuwa PFOA a wurin aiki na iya samun matakan sau da yawa mafi girma.
Ana iya samun PFOA da wasu mahadi irin wannan a ƙananan matakan a wasu abinci, ruwan sha, da kuma cikin ƙurar gida.Kodayake matakan PFOA a cikin ruwan sha ba su da yawa, suna iya zama mafi girma a wasu wurare, kamar kusa da tsire-tsire masu amfani da PFOA.
Hakanan ana iya fallasa mutane zuwa PFOA daga kakin ski ko daga yadudduka da kafet waɗanda aka yi musu maganin tabo.Kayan dafa abinci mara sanda ba shine muhimmin tushen bayyanar PFOA ba.
Yawancin karatu a cikin 'yan shekarun nan sun kalli yiwuwar PFOA haifar da ciwon daji.Masu bincike suna amfani da nau'ikan bincike guda 2 don ƙoƙarin gano ko irin wannan abu na iya haifar da ciwon daji.
Nazarin a cikin lab
A cikin binciken da aka yi a cikin dakin gwaje-gwaje, dabbobi suna fuskantar wani abu (sau da yawa a cikin manyan allurai) don ganin ko yana haifar da ciwace-ciwace ko wasu matsalolin lafiya.Masu bincike kuma za su iya fallasa sel ɗan adam a cikin kwanon lab don ganin ko yana haifar da nau'ikan canje-canjen da ake gani a cikin ƙwayoyin kansa.
Nazarin da aka yi a cikin dabbobin lab sun sami fallasa zuwa PFOA yana ƙara haɗarin wasu ciwace-ciwacen hanta, ƙwai, glandan mammary (nono), da pancreas a cikin waɗannan dabbobin.Gabaɗaya, ingantaccen binciken da aka gudanar a cikin dabbobi yana yin kyakkyawan aiki na tsinkaya waɗanne abubuwan da ke haifar da cutar kansa a cikin mutane.Amma ba a fayyace ba idan yadda wannan sinadari ke shafar hadarin daji a cikin dabbobi zai kasance iri ɗaya a cikin mutane.
Nazarin a cikin mutane
Wasu nau'o'in bincike suna kallon yawan ciwon daji a cikin ƙungiyoyin mutane daban-daban.Wadannan nazarin na iya kwatanta adadin ciwon daji a cikin rukuni da aka fallasa zuwa wani abu zuwa yawan ciwon daji a cikin rukuni wanda ba a bayyana shi ba, ko kwatanta shi da yawan ciwon daji a cikin yawan jama'a.Amma wani lokacin yana da wuya a san abin da sakamakon waɗannan nau'ikan binciken ke nufi, saboda wasu dalilai da yawa na iya shafar sakamakon.
Nazarin ya kalli mutanen da aka fallasa ga PFOA daga rayuwa kusa ko aiki a cikin tsire-tsire masu sinadarai.Wasu daga cikin waɗannan karatun sun ba da shawarar ƙara haɗarin ciwon daji na ƙwanƙwasa tare da ƙara yawan bayyanar PFOA.Har ila yau, binciken ya nuna yiwuwar haɗin gwiwa zuwa ciwon daji na koda da ciwon daji na thyroid, amma karuwar haɗarin ya kasance ƙananan kuma yana iya kasancewa saboda kwatsam.
Sauran nazarin sun nuna yiwuwar haɗin gwiwa zuwa wasu cututtuka, ciki har da prostate, mafitsara, da ciwon daji na ovarian.Amma ba duk binciken ya sami irin waɗannan hanyoyin ba, kuma ana buƙatar ƙarin bincike don fayyace waɗannan binciken.
Lokacin aikawa: Nov-02-2017