Na Leseli la UVC le Atleha Bakeng sa Libaktheria le Likokoana-hloko?

Libaktheria le likokoana-hloko ke likokoana-hloko tse nyenyane tse ka bakang mafu a sa tšoaneng le

maemo. Ho thibela phetiso ea mafu le maloetse a joalo, likokoana-hloko tsena li tlameha ho tlosoa holimo le moeeng. Ho sebelisa mahlaseli a ultraviolet (UV) ke mokhoa o mong o sebetsang oa ho finyella sena. Leseli la UVC ho bontšitsoe hore ke mofuta o sebetsang ka ho fetisisa oa khanya ea UV bakeng sa ho senya libaktheria le likokoana-hloko. Sengoliloeng sena se tla hlalosa ka ho qaqileng hore na mahlaseli a ultraviolet C (UVC) ke eng, hore na a sebetsa joang le hore na a sebetsa hantle hakae ho bolaee libaktheria le livaerase.

Leseli la UVC le na le bolelele bo pakeng tsa 200 le 280 nanometers (nm). E na le leqhubu le lekhutšoane ho feta khanya e bonahalang, hammoho le mahlaseli a UVA le UVB a tsoang letsatsing leo re pepesetsoang ho lona.E boetse e tsejoa e le germicidal UV hobane e ka felisa DNA ea likokoana-hloko tse kang likokoana-hloko le libaktheria.

Leseli la UVC le sebetsa Joang?

Mahlaseli a UVC a sebetsa ka ho baka tšenyo ea DNA ho likokoana-hloko tse kang libaktheria le likokoana-hloko. E 'ngoe ea li-nucleotide tse' nè tse nang le DNA, thymine, e theha maqhama a covalent le limolek'hule tsa thymine tse haufi ha li pepesehetse mahlaseli a UVC. Sena se fella ka ho thehoa ha thymine dimer, e senyang sebopeho sa DNA helix le ho thibela ho ikatisa ha DNA. Microorganism ha e khone ho mamella le ho ikatisa ntle le matla a ho ikatisa.

Mahlaseli a UVC a tlameha ho ba le bolelele bo nepahetseng le matla a ho sebetsa. Leseli la UVC  matla a lekanngoa ka li-microwatts per centimeter square (W/cm2). Matla a hlokahalang ho felisa libaktheria le likokoana-hloko li itšetlehile ka mofuta oa likokoana-hloko, sebaka se pakeng tsa mohloli oa leseli le likokoana-hloko, le nako ea ho pepeseha.

Mahlaseli a UVC le Libaktheria

Leseli la UVC le bonahetse le sebetsa khahlano le mefuta e fapaneng ea libaktheria. Thutong e 'ngoe, Leseli la UVC e fokolitse palo ea libaktheria tsa Staphylococcus aureus holim'a metsi ka 99.9% ka mor'a metsotsoana e 5 feela ea ho pepesehela 0.32 W / cm2 ea leseli la UVC. Motsotso o le mong oa ho pepesehela leseli la UVC ka matla a 1.8 W / cm2 o ne o lekane ho felisa 99.9% ea libaktheria tsa Pseudomonas aeruginosa, ho latela thuto e 'ngoe.

Leseli la UVC e boetse e bontšitsoe ho senya libaktheria tse hanyetsanang le lithethefatsi tse ngata. Phuputsong e 'ngoe, metsotsoana ea 10 ea ho pepesehela leseli la UVC ka matla a 0.2 W / cm2 e fokolitse palo ea libaktheria tsa Acinetobacter baumannii tse hanyetsanang le lithethefatsi tse ngata holim'a metsi ka 99.9%. Metsotsoana e 5 ea ho pepeseha ho 0.5 W/cm2  Leseli la UVC t e fokolitse palo ea libaktheria tsa Klebsiella pneumoniae tse hanyetsanang le lithethefatsi tse ngata holim'a metsi ka 99.9%, ho latela thuto e fapaneng.

UVC Radiation le Virusi

Leseli la UVC le fumanoa le sebetsa khahlano le livaerase tse fapaneng. Ka mor'a metsotso e 15, Leseli la UVC  ka matla a 0.1 W/cm2 a fokolitse tšoaetso ea kokoana-hloko ea ntaramane A ka 99.99%, ho latela phuputso e 'ngoe. Phuputsong e 'ngoe, metsotso e 15 ea ho pepeseha ho Leseli la UVC ka matla a 0.5 W/cm2 e fokolitse tšoaetso ea coronavirus ea motho OC43 ka 99.9%.

E boetse e bonts'itsoe e sebetsa khahlano le vaerase ea SARS-CoV-2 e bakang COVID-19 ka a ke di tšoaetso . Ka metsotsoana e 25, Leseli la UVC  ka matla a 0.1 W/cm2 e fokolitse tšoaetso ea kokoana-hloko ea SARS-CoV-2 ka 99.9%, ho latela thuto e 'ngoe. Phuputsong e 'ngoe, ho pepesetsoa ho Leseli la UVC ka matla a 0.05 W/cm2 e fokolitse tšoaetso ea kokoana-hloko ea SARS-CoV-2 ka 99.9% ka motsotso o le mong feela.

Ke habohlokoa ho hlokomela hore katleho ea   ho timetsa livaerase ho itšetlehile ka mefuta e mengata, ho kopanyelletsa le mofuta oa kokoana-hloko, matla a khanya, le nako ea ho pepeseha. Leha ho le joalo, lipatlisiso li bonts'itse hore leseli la UVC e ka ba sesebelisoa sa bohlokoa ho thibela ho ata ha livaerase tse kang ntaramane, coronavirus ea batho le SARS-CoV-2.

Thibelo ea Leseli la UVC

Leseli la UVC le bonahetse le sebetsa ho bolaea likokoana-hloko le likokoana-hloko, empa ts'ebeliso ea lona e lekanyelitsoe.

●  Ntlha ea pele, ke likokoana-hloko feela tse pepesehileng ho eona ka ho toba li ka bolaoa ho kenyeletsa le Tšireletso ea metsi a UV . Ka hona, bokaholimo le lintho tse sa amaneng ka kotloloho le mahlaseli a UVC li ntse li ka ba le libaktheria le livaerase.

●  Ea bobeli, ho pepeseha ka ho toba ho eona ka nako e telele ho ka ba kotsi ho batho.Ho pepeseha ho feteletseng ho ka lebisa ho halefa ha letlalo, ho lematsa mahlo, le litaba tse ling tsa bophelo bo botle. Ka hona, ho bohlokoa ho latela litataiso tsa polokeho ea mabone a UVC le ho netefatsa hore batho ha ba pepesehele mabone ka kotloloho.

●  Ntlha ea boraro, e khona ho senya libaktheria le likokoana-hloko feela haeba e sebelisoa ka matla le nako e nepahetseng. E kanna ea se sebetse hantle ho feliseng likokoana-hloko haeba matla kapa nako ea ho pepeseha e sa lekana.

●  Qetellong, mahlaseli a UVC a ka 'na a se ke a sebetsa khahlanong le libaktheria le likokoana-hloko tsohle. Likokoana-hloko tse ling le livaerase li kanna tsa hanana le leseli la UVC ho feta tse ling.

Ha se Mabone 'ohle a UV a tšoanang!

Ha se mahlaseli 'ohle a UV a sebetsang ka ho lekana ho senya libaktheria le livaerase. Ho na le mefuta e fapaneng ea mefuta e fapaneng ea leseli la UV, e 'ngoe le e' ngoe e na le maqhubu a ikhethang le thepa. Ho utloisisa phapang pakeng tsa mefuta e sa tšoaneng ea khanya ea UV, hoa hlokahala ho hlahloba mahlaseli a ultraviolet.

UV-A le UV-B

UV-A le UV-B ke mefuta e tsebahalang haholo ea leseli la ultraviolet, 'me ke mahlaseli a letsatsi a fihlang holim'a Lefatše. Leha ho le joalo, mefuta e meng ea khanya ea UV e atisa ho sebelisoa lihlahisoa tse bolaeang moea.

UV-C

UV-C, eo hape e tsejoang e le germicidal UV, e na le maqhubu a pakeng tsa 200 le 280 nanometers. Ona ke mofuta o tloaelehileng oa UV e bolaeang likokoana-hloko oo bo-rasaense ba o sebelisitseng ka lilemo tse fetang lekholo ho bolaea likokoana-hloko metsing, moea le bokaholimo. UV-C e senya le ho tima mefuta eohle ea likokoana-hloko, ho kenyeletsoa livaerase, libaktheria, hlobo le li-fungus.

Hole-UVC

Far-UVC ke karoloana ea UV-C, e nang le maqhubu a pakeng tsa 207 le 222 nanometers. UVC e hōle e fapane ka hore ho lumeloa hore ha e na kotsi bakeng sa ho pepeseha ha batho. Lehlaseli lena la khanya le na le bandwidth e moqotetsane haholo e e thibelang ho kenella ka ntle ho karolo e ka ntle ea epidermis ea rona, empa e ntse e ka bolaea likokoana-hloko le libaktheria. Lilemong tse leshome tse fetileng, bo-rasaense ba ile ba qala ho tsepamisa maikutlo ho UVC e hōle, kahoo lipatlisiso tsa liphello tse mpe tse ka 'nang tsa e-ba teng li fokotsehile ho feta UV-C.

Haufi le UV

Haufi le UV e na le boholo ba maqhubu a UV-A, a ntseng a e-na le thepa ea ho bolaea likokoana-hloko empa e ke ke ea senya likokoana-hloko tse kang UV-C. Litsing tsa bongaka le litsing tsa tlhokomelo ea batho ba baholo, haufi le leseli la ultraviolet le ka thusa ho fokotsa sekhahla sa tšoaetso ea baktheria. Maqhubu ana a makhubu a haufi haholo le khanya e bonahalang 'me ho nahanoa hore a bolokehile bakeng sa batho.

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