Fale-falen buraka a matsayin tace iska
Masu bincike a Jami'ar California, Riverside sun ƙera shingles na rufin da suke da'awar cewa za su iya lalata nau'in nau'in nitrogen oxides masu cutarwa a cikin yanayi a cikin tsawon shekara guda kamar yadda matsakaicin mota ke tuka sama da 17 a lokaci guda. kilomita. Dangane da wasu ƙididdiga, rufin miliyan ɗaya da aka rufe da irin wannan fale-falen yana cire tan miliyan 21 na waɗannan oxides daga iska a kowace rana.
Makullin yin rufin banmamaki shine haɗakar da titanium dioxide. Daliban da suka fito da wannan ƙirƙira kawai sun rufe fale-falen fale-falen fale-falen da aka siya da shi. Fiye da daidai, sun rufe su da nau'i daban-daban na wannan abu, suna gwada su a cikin "ɗakin yanayi" da aka yi da itace, Teflon da bututun PVC. Sun zubar da mahadi masu cutarwa na nitrogen a ciki kuma sun haskaka tayal da hasken ultraviolet, wanda ya kunna titanium dioxide.
A cikin samfurori daban-daban, an cire murfin mai amsawa daga 87 zuwa 97 bisa dari. abubuwa masu cutarwa. Abin sha'awa shine, kauri daga cikin rufin tare da Layer titanium bai haifar da bambanci sosai ga aikin aiki ba. Duk da haka, wannan gaskiyar na iya zama mahimmanci daga ra'ayi na tattalin arziki, tun da ƙananan ƙananan yadudduka na titanium dioxide na iya zama tasiri. Masu ƙirƙira a halin yanzu suna la'akari da yiwuwar "tabo" tare da wannan abu duk saman gine-gine, ciki har da bango da sauran abubuwan gine-gine.
