Musi waGumiguru 17, 2013, International Agency for Research on Cancer, rimwe divi reWorld Health Organisation, rakapa mushumo kekutanga kuti kusvibiswa kwemhepo kunokonzeresa vanhu, uye chinhu chikuru chekusvibiswa kwemhepo inyaya.
Munzvimbo yechisikigo, chinhu chemukati memhepo chinosanganisira jecha neguruva zvinounzwa nemhepo, dota regomo rinobudiswa nekuputika kwegomo rinoputika, utsi neguruva rinokonzerwa nemoto wesango, munyu wegungwa unobuda mumvura yegungwa yakavhenekerwa nezuva, uye mukume wezvirimwa.
Nekuvandudzwa kwenharaunda yevanhu uye nekuwedzera kwemaindasitiri, zviitiko zvevanhu zvinoburitsawo huwandu hukuru hwezvinhu mumhepo, senge soot kubva kune akasiyana maindasitiri maitiro sekugadzira magetsi, simbi, petroleum, uye chemistry, utsi hwekubikira, kupera kubva. mota, kusvuta etc.
Chinhu chiri mumhepo chinoda kunyanya kunetseka pamusoro pezvinhu zvinofemeswa, izvo zvinoreva chinhu chine chidimbu chine dhayamita yakaenzana neaerodynamic isingasviki gumi μm, inova PM10 yatinowanzonzwa nezvayo, uye PM2.5 isingasviki 2.5 μm .
Kana mhepo ichipinda munzira yekufema yemunhu, vhudzi remhino uye mucosa yemumhino inogona kuvharira akawanda ezvikamu, asi izvo zviri pasi pePM10 hazvigone.PM10 inogona kuunganidza mukumusoro kufema turakiti, nepo PM2.5 inogona kupinda zvakananga bronchioles uye alveoli.
Nekuda kwehukuru hwayo hudiki uye yakakura yakananga nzvimbo, chinhu chemukati chinowanzo kushambadza zvimwe zvinhu, saka zvikonzero zvepathogenesis yacho zvakanyanya kuoma, asi chinonyanya kukosha ndechekuti inogona kukonzera chirwere chemoyo, chirwere chekufema uye kenza yemapapu.
PM2.5, iyo yatinowanzoita hanya nayo, inotora chikamu chidiki chezvikamu zvinofema, asi nei uchinyanya kutarisisa PM2.5?
Ehezve, imwe imhaka yekushambadzwa nevezvenhau, uye imwe yacho ndeyekuti PM2.5 yakanaka uye iri nyore kutora organic zvinosvibisa uye zvinorema simbi senge polycyclic inonhuhwirira hydrocarbons, iyo inowedzera zvakanyanya mukana wecarcinogenic, teratogenic, uye mutagenic.
Nguva yekutumira: Mar-16-2022