A ranar 17 ga Oktoba, 2013, hukumar bincike kan cutar daji ta kasa da kasa, reshen hukumar lafiya ta duniya, ta fitar da wani rahoto a karon farko cewa gurbatacciyar iska tana cutar da mutane, kuma babban abin da ke gurbata iska shi ne kwayoyin halitta.
A cikin yanayin yanayi, abubuwan da ke cikin iska sun haɗa da yashi da ƙurar da iskar ke kawowa, toka mai aman wuta da aman wuta ke fitarwa, hayaki da ƙurar da gobarar daji ke haifarwa, gishirin teku da ke ƙafe daga ruwan teku da hasken rana ke fitowa, da kuma pollen shuke-shuke.
Tare da ci gaban al'ummar ɗan adam da haɓaka masana'antu, ayyukan ɗan adam kuma suna fitar da adadi mai yawa na ƙwayoyin cuta a cikin iska, kamar toka daga hanyoyin masana'antu daban-daban kamar samar da wutar lantarki, ƙarfe, man fetur, da sinadarai, hayaƙin dafa abinci, shaye-shaye daga motoci, shan taba da dai sauransu.
Abun da ke cikin iska yana buƙatar damuwa sosai game da ƙwayoyin da ba za a iya shakar su ba, wanda ke nufin ƙayyadaddun kwayoyin halitta tare da diamita na aerodynamic daidai da ƙasa da μm, wanda shine PM10 sau da yawa muna jin labarinsa, kuma PM2.5 bai wuce 2.5 μm ba. .
Lokacin da iska ta shiga cikin hanyar numfashi na ɗan adam, gashin hanci da hanci na hanci na iya toshe yawancin barbashi, amma waɗanda ke ƙasa da PM10 ba za su iya ba.PM10 na iya tarawa a cikin sashin numfashi na sama, yayin da PM2.5 zai iya shiga cikin bronchioles da alveoli kai tsaye.
Saboda ƙananan girmansa da ƙayyadaddun yanki na musamman, ƙwayoyin ƙwayoyin cuta sun fi dacewa da wasu abubuwa, don haka abubuwan da ke haifar da cututtuka sun fi rikitarwa, amma mafi mahimmanci shine yana iya haifar da cututtuka na zuciya da jijiyoyin jini, cututtuka na numfashi da kuma ciwon huhu.
PM2.5, wanda yawanci mukan damu dashi, a zahiri yana lissafin ɗan ƙaramin adadin inhalable barbashi, amma me yasa ake kula da PM2.5?
Tabbas, ɗayan yana da alaƙa da tallan kafofin watsa labarai, ɗayan kuma shine PM2.5 ya fi kyau kuma ya fi sauƙi don ɗaukar gurɓatattun ƙwayoyin cuta da ƙarfe masu nauyi irin su polycyclic aromatic hydrocarbons, wanda ke haɓaka yuwuwar cutar kansa, teratogenic, da mutagenic.
Lokacin aikawa: Maris 16-2022