Daim duab Banner: Lub teeb ultraviolet los ntawm krypton chloride excimer teeb yog siv los ntawm cov molecules txav ntawm lub zog sib txawv. (Tau qhov twg los: Linden Research Group)
Kev tshawb fawb tshiab los ntawm University of Colorado Boulder tau pom tias qee qhov wavelengths ntawm ultraviolet (UV) lub teeb tsis tsuas yog muaj txiaj ntsig zoo ntawm kev tua tus kab mob uas ua rau COVID-19, tab sis lawv kuj muaj kev nyab xeeb dua rau kev siv hauv cov chaw pej xeem.
Txoj kev tshawb no, luam tawm lub hli no hauv phau ntawv Journal Applied and Environmental Microbiology, yog thawj qhov kev tshuaj ntsuam xyuas ntawm qhov cuam tshuam ntawm qhov sib txawv wavelengths ntawm ultraviolet lub teeb ntawm SARS-CoV-2 thiab lwm yam kab mob ua pa, suav nrog tsuas yog ib qho uas muaj kev nyab xeeb dua rau cov kab mob thiab tsis xav tau kev sib cuag wavelengths. Tiv thaiv.
Cov kws sau ntawv hu cov kev tshawb pom no yog "kev hloov pauv kev ua si" rau kev siv lub teeb UV uas tuaj yeem ua rau muaj txiaj ntsig zoo, muaj kev nyab xeeb thiab muaj txiaj ntsig zoo rau kev txo qis kev kis tus kab mob hauv cov chaw pej xeem neeg coob xws li tshav dav hlau thiab chaw ua yeeb yam.
"Ntawm tag nrho cov kab mob uas peb tau kawm, tus kab mob no yog nyob deb ntawm ib qho yooj yim tua nrog lub teeb ultraviolet," said Carl Linden, tus kws tshaj lij ntawm ib puag ncig engineering. “Nws xav tau koob tshuaj tsawg heev. Qhov no qhia tau tias UV thev naus laus zis tuaj yeem yog qhov kev daws teeb meem zoo heev rau kev tiv thaiv cov chaw pej xeem. "
Ultraviolet rays yog ib txwm tso tawm los ntawm lub hnub, thiab feem ntau cov ntaub ntawv muaj teeb meem rau cov tsiaj nyob nrog rau cov kab mob xws li kab mob. Lub teeb no tuaj yeem nqus tau los ntawm cov kab mob genome, khi cov pob hauv nws thiab tiv thaiv nws los ntawm kev tsim tawm. Txawm li cas los xij, cov teeb meem wavelengths los ntawm lub hnub yog lim tawm los ntawm txheej ozone ua ntej lawv ncav cuag lub ntiaj teb saum npoo.
Qee cov khoom lag luam, xws li cov teeb fluorescent, siv ergonomic UV rays, tab sis muaj txheej sab hauv ntawm cov phosphorus dawb uas tiv thaiv lawv los ntawm UV rays.
Linden tau hais tias "Thaum peb tshem tawm cov txheej txheem, peb tuaj yeem tso tawm wavelengths uas tuaj yeem tsim kev puas tsuaj rau peb cov tawv nqaij thiab qhov muag, tab sis lawv kuj tuaj yeem tua cov kab mob," Linden hais.
Cov tsev kho mob twb tau siv UV thev naus laus zis los tua cov kab mob hauv thaj chaw tsis muaj neeg nyob thiab siv cov neeg hlau los siv UV teeb ntawm chav ua haujlwm thiab chav tsev neeg mob.
Ntau yam khoom siv hauv khw niaj hnub no tuaj yeem siv UV teeb los ntxuav txhua yam ntawm cov xov tooj ntawm tes mus rau lub raj mis dej. Tab sis FDA thiab EPA tseem tab tom tsim cov txheej txheem kev nyab xeeb. Linden ceeb toom tiv thaiv kev siv tus kheej lossis "sterilizing" cov cuab yeej uas ua rau tib neeg rau lub teeb ultraviolet.
Nws tau hais tias qhov kev tshawb pom tshiab yog qhov tshwj xeeb vim tias lawv sawv cev rau thaj chaw nruab nrab ntawm lub teeb ultraviolet, uas muaj kev nyab xeeb rau tib neeg thiab muaj kev phom sij rau cov kab mob, tshwj xeeb tshaj yog cov kab mob uas ua rau COVID-19.
Hauv txoj kev tshawb no, Linden thiab nws pab neeg tau sib piv cov wavelengths sib txawv ntawm UV lub teeb siv cov qauv tsim tsim thoob plaws hauv UV kev lag luam.
Linden tau hais tias "Peb xav tias peb tuaj ua ke thiab ua cov lus qhia meej txog tus nqi ntawm UV raug tsim los tua SARS-CoV-2," Linden tau hais. "Peb xav kom paub tseeb tias yog tias koj siv lub teeb UV los tua tus kab mob, koj yuav ua tiav". Kev noj tshuaj tiv thaiv tib neeg kev noj qab haus huv thiab tib neeg cov tawv nqaij thiab tua cov kab mob no. "
Cov cib fim ua haujlwm zoo li no tsis tshua muaj vim tias ua haujlwm nrog SARS-CoV-2 yuav tsum muaj cov qauv kev nyab xeeb nruj heev. Yog li Linden thiab Ben Ma, tus kws kho mob tom qab kawm tiav hauv Linden pawg, koom tes nrog tus kws kho mob virologist Charles Gerba ntawm University of Arizona hauv chav kuaj muaj ntawv tso cai los kawm tus kab mob thiab nws qhov txawv.
Cov kws tshawb nrhiav pom tias thaum cov kab mob feem ntau nkag siab rau lub teeb ultraviolet, qee qhov deb-ultraviolet wavelength (222 nanometers) yog qhov tshwj xeeb. Qhov no wavelength yog tsim los ntawm krypton chloride excimer teeb, uas yog powered los ntawm molecules uas txav ntawm txawv zog xeev thiab muaj zog heev. Yog li ntawd, nws muaj peev xwm ua rau muaj kev puas tsuaj ntau rau cov kab mob sib kis thiab nucleic acids dua li lwm cov khoom siv UV-C thiab raug thaiv los ntawm cov txheej txheem sab nrauv ntawm tus neeg ntawm daim tawv nqaij thiab ob lub qhov muag, txhais tau tias nws tsis muaj teeb meem kev noj qab haus huv. tua tus kab mob.
UV rays ntawm qhov ntev sib txawv ( ntsuas ntawm no hauv nanometers) tuaj yeem nkag mus rau ntau txheej ntawm daim tawv nqaij. Qhov tob ntawm cov wavelengths no nkag mus rau ntawm daim tawv nqaij, lawv ua rau muaj kev puas tsuaj ntau dua. (Duab qhov chaw: "Far UV: Tam sim no Lub Xeev ntawm Kev Paub" luam tawm los ntawm International Ultraviolet Radiation Association hauv 2021)
Txij li thaum xyoo pua 20th, ntau hom UV hluav taws xob tau dav siv los tua cov dej, huab cua, thiab qhov chaw. Thaum ntxov li xyoo 1940, nws tau siv los txo qhov kev kis tus kab mob ntsws hauv tsev kho mob thiab cov chav kawm los ntawm kev teeb tsa lub qab nthab los tua cov huab cua hauv chav. Niaj hnub no nws yog siv tsis tau tsuas yog nyob rau hauv tsev kho mob, tab sis kuj nyob rau hauv ib co pej xeem chav dej thiab nyob rau hauv dav hlau thaum tsis muaj leej twg nyob ib ncig ntawm.
Nyob rau hauv ib daim ntawv dawb tsis ntev los no luam tawm los ntawm International Ultraviolet Society, Far-UV Radiation: Tam sim no Lub Xeev ntawm Kev Paub (nrog rau kev tshawb fawb tshiab), Linden thiab cov kws sau ntawv sib cav hais tias qhov kev nyab xeeb nyob deb-UV wavelength no tuaj yeem siv nrog rau kev txhim kho qhov cua, hnav. lub qhov ncauj qhov ntswg thiab tshuaj tiv thaiv yog cov kev ntsuas tseem ceeb los txo cov kev cuam tshuam ntawm kev sib kis tam sim no thiab yav tom ntej.
Linden Imagine cov tshuab tuaj yeem qhib thiab kaw hauv qhov chaw kaw kom huv si tsis tu ncua huab cua thiab qhov chaw, lossis tsim kom muaj kev cuam tshuam tsis pom kev ntawm cov kws qhia ntawv thiab cov tub ntxhais kawm, cov neeg tuaj xyuas thiab cov neeg ua haujlwm tu, thiab cov neeg nyob hauv qhov chaw uas muaj kev sib txawv tsis tuaj yeem tswj tau.
UV tshuaj tua kab mob tuaj yeem sib tw cov txiaj ntsig zoo ntawm kev txhim kho qhov cua hauv tsev, vim nws tuaj yeem muab kev tiv thaiv tib yam li nce cov huab cua hloov pauv ib teev hauv ib chav. Kev txhim kho UV teeb kuj tseem kim dua li kev kho dua tshiab koj lub HVAC tag nrho.
"Muaj lub sijhawm ntawm no los txuag nyiaj thiab lub zog thaum tiv thaiv pej xeem kev noj qab haus huv. Nws yog qhov nthuav tiag tiag, ”Linden hais.
Lwm tus kws sau ntawv hauv phau ntawv no suav nrog: Ben Ma, University of Colorado, Boulder; Patricia Gandy thiab Charles Gerba, University of Arizona; thiab Mark Sobsey, University of North Carolina, Chapel Hill).
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Post lub sij hawm: Nov-03-2023