Ucwaningo lwamuva nje luveze ukuthi abagibeli bezindiza bavame ukuchayeka emazingeni aphezulu kakhulu okungcola kwezinhlayiya ezincane kakhulu (UFP) ngesikhathi sokuhamba ngetekisi kanye nasemzileni wendiza. Lezi zinhlayiya ezincane kakhulu, ezincane kune-nanometers eziyi-100 (0.1 micrometers), zingadlula kalula izihlungi ezivamile futhi zingene zijule emaphashini, okungase kuholele ezingozini zempilo zesikhathi eside.
Nakuba amamaski e-N95 aklanyelwe ngokuyinhloko ukuhlunga izinhlayiya ezincane njenge-0.3 micrometer (300 nanometers), asahlinzeka ngezinga elibalulekile lokuvikelwa ezinhlayiya ezi-ultrafine. Ngenxa yomphumela wokunyakaza kwe-Brownian, amamaski e-N95 angabamba ngisho nezinhlayiya ezincane ngempumelelo kakhulu kunalokho obekulindelekile.
Ukuhlushwa kwezinhlayiya ezincane kakhulu kuphezulu kakhulu ngesikhathi sokuhamba ngetekisi, ikakhulukazi lapho indiza ingasebenzi noma ngemuva kwenye indiza. Izinjini zezindiza zikhipha ingxube yezinto ezingcolisayo, okuhlanganisa izinto ezincane (PM), izinto eziphilayo eziguquguqukayo (VOCs), kanye nomhwamuko kaphethiloli. Lezi zinto ezingcolisayo, ikakhulukazi ama-VOC, zingangena ngaphakathi kwekhabhini, zonakalise kakhulu ikhwalithi yomoya ngesikhathi sokusuka nokufika.
Nakuba amazinga e-PM2.5 evame ukulinganiswa ezikhumulweni zezindiza, lezi zinhlayiya azihlobene ngqo nezinhlayiya ze-ultrafine, okunzima ukuzibona. I-PM2.5 ivame ukusetshenziswa njengesilinganiso esingaqondile sezinhlayiya ze-ultrafine, njengoba ukuba khona kwazo kuhlotshaniswa nokugcwala kwezinhlayiya ezincane. Kodwa-ke, izingozi zempilo ezihlobene nezinhlayiya ze-ultrafine zihlobene kakhulu nenani lazo kanye nendawo yazo kunobunzima bazo.
Nakuba amamaski e-N95 engaphelele ekuhlungeni izinhlayiya ezi-ultrafine, asanikeza isivikelo esisebenzayo ezingcoleni ezihlukahlukene eziphuma emoyeni. Ukugqoka imaski ye-N95 ngesikhathi sokuhamba ngetekisi, ukusuka, kanye nokufika kungasiza ekunciphiseni ukuchayeka kokubili ezintweni ezincane kanye nama-VOC ayingozi. Kubagibeli abazwela kakhulu ekungcoleni komoya, njengalabo ababhekana nesicanucanu noma izimpawu zokuphefumula, lesi sinyathelo esilula singanikeza isivikelo esibalulekile emazingeni aphezulu okungcoliswa kwezinhlayiya ezi-ultrafine okukhona phakathi nalezi zigaba zendiza.
