Isimiso Nokusetshenzwa Kwe-Ultraviolet Sterilization: Ukuvalwa kwe-UV kunomlando omude.Ngo-1903, usosayensi waseDenmark u-Niels Finsen wenza isiphakamiso se-phototherapy yesimanje ngokususelwa kumgomo wokuvala inzalo ukukhanya futhi waklonyeliswa ngendondo yeNobel kuPhysiology noma Medicine.Ekhulwini elidlule, ukuvala inzalo kwe-UV kudlale indima ebalulekile ekuvimbeleni nasekwelapheni izifo ezithathelwanayo eziyingozi kubantu, njengesigameko "sezinambuzane ezimbili" eNyakatho Melika ngeminyaka yawo-1990, i-SARS eChina ngo-2003, kanye ne-MERS Middle East ngo-2012. Muva nje, ngenxa yokuqubuka okubi kwe-coronavirus entsha (2019-nCoV) e-China, ukukhanya kwe-UV kuye kwaqashelwa ngokusebenza kwayo okuphezulu ekubulaleni amagciwane, okuba yindlela ebalulekile yokulawula ukusabalala kwalolu bhubhane kanye nokuqinisekisa. ukuphepha kwempilo.
Umgomo We-UV Sterilization: Ukukhanya kwe-UV kuhlukaniswe i-A-band (315 kuya ku-400 nm), i-B-band (280 kuya ku-315 nm), i-C-band (200 kuya ku-280 nm), ne-vacuum UV (100-200 nm) ngokusho ububanzi bayo be-wavelength.Ngokuvamile, ukukhanya kwe-UV ye-C-band kusetshenziselwa ukuvala inzalo.Ngemuva kokuchayeka ekukhanyeni kwe-C-band UV, i-nucleic acid (i-RNA ne-DNA) emagciwaneni amancane imunca amandla ama-photon e-UV, okubangela ukuthi amapheya ayisisekelo enze i-polymerize futhi avimbele ukwakheka kwamaprotheni, okwenza ama-microorganisms angakwazi ukuzala, ngaleyo ndlela azuze umphumela. inhloso yokuvala inzalo.
Izinzuzo ze-UV Sterilization:
1) Ukuvalwa kwe-UV akukhiqizi izinsalela noma imikhiqizo ephuma ngaphandle enobuthi, kugwema ukungcoliswa kwesibili kwemvelo kanye nokukhipha i-oxidation noma ukugqwala kwezinto ezibulawa amagciwane.
2) Imishini yokuvala inzalo ye-UV kulula ukuyifaka nokuyinakekela, inokusebenza okuthembekile, futhi inezindleko eziphansi.Izibulali magciwane zendabuko ezifana ne-chlorine, i-chlorine dioxide, i-ozone, ne-peracetic acid ziwubuthi obuphezulu, obusha, obuqhumayo, noma obubolayo obudinga izimfuneko eziqinile nezikhethekile zokuvala inzalo zokukhiqiza, ukuthuthwa, ukugcinwa, nokusetshenziswa.
3) Ukuvala inzalo ye-UV kunobubanzi obubanzi futhi kusebenza kahle kakhulu, kukwazi ukubulala izinto eziningi eziphilayo ezibangela izifo ezihlanganisa i-protozoa, amagciwane, amagciwane, njll. Umthamo wemisebe ongu-40 mJ/cm2 (ngokuvamile ufinyeleleka uma izibani zemercury ezinengcindezi ephansi zikhanyiswa kude imitha eyodwa ngomzuzu owodwa) ingabulala ama-99.99% we-pathogenic microorganisms.
Ukuvalwa kwe-UV kunomphumela obanzi futhi osebenza kahle kakhulu wokubulala amagciwane kuma-microorganisms amaningi e-pathogenic, okuhlanganisa ne-coronavirus entsha (2019-nCoV).Uma kuqhathaniswa nezibulala-magciwane zendabuko zamakhemikhali, ukuvala inzalo kwe-UV kunezinzuzo zokungangcoli kwesibili, ukusebenza okuthembekile, nokusebenza kahle okuphezulu ekubulaleni amagciwane, okungaba wusizo olukhulu ekulawuleni ubhubhane.
Isikhathi sokuthumela: Aug-01-2023