Cishe uzwe umsindo omningi muva nje mayelana nokukhanya kwe-UV, okuhlanganisa ukukhanya kwelanga, nokuthi kungawabhubhisa noma cha amagciwane afana ne-coronavirus yenoveli, ebangela i-COVID-19.
Akuwona wonke ama-hype. Eqinisweni, kunobufakazi obuhle bokuthi ukukhanya kwe-UV ebangeni elithi "C", okwaziwa nangokuthi i-UVC, kungabulala leli gciwane. Kodwa lokho akusho ukuthi kufanele ugijime futhi uthenge elinye lamabhokisi e-UV noma ama-wands abonakala evela yonke indawo. Yilokhu okudingeka ukwazi.
Ngabe ukukhanya kwe-UV kusebenza kanjani?
Sekuyiminyaka izibhedlela namalabhorethri zisebenzisa ukukhanya kwe-ultraviolet (UV) ukuze kubulawe amagciwane emishinini nasezindaweni ezingaphezulu. Isebenza ngokushintsha izakhi zofuzo zamagciwane (okwaziwa ngokuthi i-DNA ne-RNA). Kodwa ngokuhamba kweminyaka, ucwaningo luye lwembula ukuthi ezinhlotsheni ezintathu eziyinhloko zokukhanya kwe-UV, i-UVA, UVB, ne-UVC, I-UVC ibonakala iphumelela kakhulu.
Muva nje, ucwaningo oluvela e-Columbia University luthole ukuthi ukukhanya kwe-UVC kunesithembiso ekumiseni ukusabalala kwe-coronavirus. Ucwaningo, olushicilelwe ngo-Ephreli 2020 njenge-preprint ku-Virology, lwathola ukuthi ukukhanya kwe-UVC ingasiza ekuqedeni izinhlobo ezimbili zama-coronavirus esizini okuvame ukuba yimbangela yomkhuhlane ojwayelekile. Abacwaningi manje sebeyihlola ngokuqondene naleyo ebangela i-COVID-19.
Nakuba ucwaningo lusandulela, okutholwe ngaphambilini kubonisa ukuthi ukukhanya kwe-UVC ingenza igciwane lomkhuhlane we-H1N1 lisebenze emoyenikanye amanye amagciwane amelana nemithi. Lokhu kusho ukuthi ungase ube nethuba lokuvimbela ukusabalala kwe-COVID-19.
Olunye ucwaningo lwaselabhorethri lokuqala, olwanyatheliswa ngo-Ephreli 2020 ku-medRxiv, lwathola ukuthi lapho izingcezu zendwangu yemaski engu-N95 nensimbi engagqwali zingcoliswa yi-coronavirus yenoveli bese zivezwa ilambu le-UVC lesibhedlela, leli gciwane labulawa kuzo zombili izindawo. Kodwa-ke, ucwaningo lusabuyekezwa, ngakho-ke akufanele luthathwe ngendlela engokoqobo okwamanje.
Inkinga ngemikhiqizo yabathengi be-UVC
Ngokunikezwa kwalolu cwaningo, ungase ucabange ngokujulile ngokuthenga omunye wemikhiqizo yokukhanya ye-UVC ongayithola ku-inthanethi njengendlela yokuhlanza yonke into kusukela ku-smartphone yakho kuya ezibalini zakho zasekhishini.
Kepha i-FDA yakhipha isaziso ngokumelene nabo ngoFebhuwari 2020, ikhumbuza abantu ukuthi la madivayisi awakagunyazwa yi-FDA, futhi akucaci ukuthi aphephe futhi asebenza kangakanani.
Inselelo enkulu yabaningi babo ukuthi ayikho indlela yokwazi ngokuqinisekile ukuthi baletha umthamo omkhulu owanele wokukhanya kwe-UVC phezulu ofuna ukukubulala amagciwane, noma ngabe imaskhi, ifoni, noma i-countertop.
Yize imikhiqizo eminingi ihlinzeka nge-wavelength, okufanele ibe cishe ngama-nanometers (nm) angama-260, iningi alihlinzeki ngokukhanya kwawo, okukutshela ukuthi kuzothatha isikhathi esingakanani ukubulala i-coronavirus. Asikho isidingo sokuthenga induku ye-UV uma kusho ukuthi uzoyihambisa kancane ocingweni lwakho ihora. Futhi uma i-irradiance iphezulu, ingalimaza isikhumba namehlo.
Uma ufuna ukuyizama, ngincoma ukuthi utshale imali ebhokisini le-UVC, lapho ubeka khona ifoni yakho noma ezinye izinto, njengamakhadi esikweletu, okhiye, noma iwashi, futhi uzishiye lapho cishe imizuzu eyi-10. Ungasebenzisi ezindwangu noma izinto ezimbobozelayo njengephepha noma amakhadibhodi, njengoba ukukhanya kwe-UV kungabangela ithunzi ezintweni ezingaqinile.
Okunye okungenzeka i-UV sanitizer yama-smartphones UcingoSoap 3 (€96), abathi inobude beza be-UVC obungu-254 nm, esebangeni elifanele lokubulala ama-coronavirus. Ucwaningo lukaJanuwari 2018, olushicilelwe ku-Journal of the American Association for Laboratory Animal Science, lwathola ukuthi idivayisi ye-PhoneSoap iphumelela kakhulu kunokusula isibulala-magciwane noma isifutho esinotshwala obungamaphesenti angama-70.
Nakuba ama-UVC esebenza ngokushesha nangokwethembeka ezindaweni ezingenazo izimbobo njengengilazi, ipulasitiki, insimbi, nokhuni oluvanishiwe, cishe kulula, ngokushesha, futhi kuphephile ukuwahlanza ngesibulala-magciwane sasendlini, kunokuthembela kunduku ye-UV.
Ingabe ukukhanya kwelanga kusebenza ukubulala amagciwane?
Uma imikhiqizo ye-UVC ingase imoshe isikhathi nemali, ungase uzibuze ukuthi kungcono yini ukucasha futhi ushise ilanga, njengoba ukukhanya kwelanga kuqukethe imisebe ye-UV.
Kodwa ukukhanya kwe-UVC okuvela elangeni kuvinjwe umkhathi woMhlaba. Uma uphuma ngaphandle ngosuku olushisayo, ukukhanya kwe-UV okukushayayo kuyi-UVA kanye ne-UVB ethile, futhi laba bafana abawabhubhisi ama-coronavirus ngokushesha okukhulu.
Sekushiwo lokho, kunobunye ubufakazi obusafufusa bokuthi ukukhanya kwelanga kuyasebenza ngokumelene ne-coronavirus yenoveli. Uphenyo lokuqala, olwenziwa uMnyango Wezokuphepha Kwasekhaya waseMelika, lwathola ukuthi ukukhanya kwelanga okufanisiwe (okulingana nelanga lasemini ngosuku olushisayo) ahwamulise amaconsi e-COVID-19 ngemva kwemizuzu emithathu kokubili ezindaweni ezingenazo izimbotshana kanye nasemoyeni.
Kodwa lokho akusho ukuthi kufanele uphonsele kude emoyeni kuleli hlobo. Uma ungaphandle futhi uhogele amaconsi omuntu onegciwane eduze nawe, usengagula.
Lesi esinye sezizathu ezenza kukholwe lokho amazinga okushisa aphezulu kanye nemisebe ye-UV akukunciphisi ukusabalala kwe-COVID-19, ngokocwaningo lwango-April 2020 olwanyatheliswa kuyi-European Respiratory Journal. Ngakho-ke uma ufuna ukuzivikela emisebeni, kwenze, kodwa gqoka i-sunscreen, gqoka imaski futhi uhlale okungenani amamitha amabili kude nawo wonke umuntu oseduze nawe.