Umgaqo-nkqubo kunye neSicelo se-UV Ultraviolet Sterilization: Ukuvalwa kwe-UV kunembali ende.Ngo-1903, isazinzulu saseDanish u-Niels Finsen wenza isindululo sonyango lwangoku lokufota ngokusekwe kumgaqo wokuvala inzala ekukhanyeni kwaye wawongwa ngeBhaso leNobel kwiPhysiology okanye kwiMedicine.Kwinkulungwane edlulileyo, ukuvalwa kwe-UV kudlale indima ebalulekileyo kuthintelo nakunyango lwezifo ezosulelayo ebantwini, njengesehlo "sezinambuzane ezibini" eNyakatho Melika ngeminyaka yoo-1990s, iSARS eTshayina ngo-2003, kunye ne-MERS kwimbali. KuMbindi Mpuma ngo-2012. Kutshanje, ngenxa yokuqhambuka okukhulu kwe-coronavirus entsha (2019-nCoV) e-China, ukukhanya kwe-UV kuye kwaqatshelwa ngokusebenza kwayo okuphezulu ekubulaleni iintsholongwane, ibe yindlela ebalulekileyo yokulawula ukusasazeka kobhubhane kunye nokuqinisekisa. ukhuseleko lobomi.
I-UV Sterilization Principle: Ukukhanya kwe-UV kwahlulwe kwi-A-band (315 ukuya ku-400 nm), B-band (280 ukuya ku-315 nm), i-C-band (200 ukuya ku-280 nm), kunye ne-vacuum UV (100-200 nm) ngokwe uluhlu lwalo lwamaza.Ngokubanzi, isibane se-C-band se-UV sisetyenziselwa ukuvala inzala.Emva kokuvezwa kukukhanya kwe-C-band ye-UV, i-nucleic acid (i-RNA kunye ne-DNA) kwii-microorganisms ifunxa amandla eefotoni ze-UV, ibangela ukuba izibini ezisisiseko zenze i-polymerize kwaye zithintele iprotein synthesis, eyenza ukuba ii-microorganisms zingakwazi ukuzala, ngaloo ndlela zifezekiseke. injongo yokuvala inzala.
Izinto eziluncedo zokuvala i-UV:
I-1) Ukuvalwa kwe-UV akuvelisi ii-arhente ezishiyekileyo okanye iimveliso ezinetyhefu, ukuthintela ungcoliseko lwesibini kwindalo esingqongileyo kunye ne-oxidation okanye ukubola kwezinto ezicoliweyo.
I-2) Izixhobo zokuvala i-UV kulula ukuzifaka kunye nokuzigcina, zisebenza ngokuthembekileyo, kwaye zinexabiso eliphantsi.Izibulali ntsholongwane zemveli ezifana neklorini, iklorini diokside, i-ozone, kunye ne-asidi ye-peracetic ziyingozi kakhulu, zivutha, ziqhuma, okanye izinto ezitshabalalisayo ezifuna iimfuno ezingqongqo nezikhethekileyo zokuvala inzala kwimveliso, ukuthuthwa, ukugcinwa, kunye nokusetyenziswa.
3) I-UV sterilization ibanzi kwaye isebenza kakuhle kakhulu, iyakwazi ukubulala uninzi lwezinto eziphilayo ezibandakanya i-protozoa, ibhaktheriya, iintsholongwane, njl njl. Idosi yemitha ye-40 mJ / cm2 (idla ngokufezekiswa xa izibane zemercury ezinoxinzelelo oluphantsi zikhanyiselwa kumgama we imitha enye ngomzuzu omnye) inokubulala i-99.99% ye-pathogenic microorganisms.
Ukuvalwa kwe-UV kune-spectrum ebanzi kunye nesiphumo esisebenza kakhulu se-bactericidal kwiintsholongwane ezininzi ze-pathogenic, kubandakanya i-coronavirus entsha (2019-nCoV).Xa kuthelekiswa nezibulali-ntsholongwane zemichiza yemveli, ukuvala inzala kwe-UV kuneengenelo zokungabi nalungcoliseko lwesibini, ukusebenza okuthembekileyo, kunye nempumelelo ephezulu ekubulaleni iintsholongwane, ezinokuba nexabiso elikhulu ekulawuleni ubhubhane.
Ixesha lokuposa: Aug-01-2023