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Is 222nm UVC light efficient and safe?

Sij hawm: 2020-05-01

A recent research has proved that a part of ultraviolet light, which is 222nm UVC light, is safe for humans.


Generally, ultraviolet light is considered hazardous to human health because of its penetration properties into the human skin, and a consistent exposure of ultraviolet light can even cause cancer.


However, research found that 222nm UVC light has a very restricted scope and cannot pierce through the outer layer of human skin or the tear apart the layer in the eye.


uv mob



The research on 222nm UVC light


Thaum Lub Peb Hlis 29, ib qho txiaj ntsig tseem ceeb tau tshaj tawm hauv online ntawm Photochemistry & Photobiology, lub npe "Cov teeb meem ntev ntev ntawm 222nm ultraviolet hluav taws xob C sterilizing teeb rau ntawm cov nas raug rau UV hluav taws xob".

222nm UVC


Nov yog kev sib koom tes tshawb fawb ntawm Kobe University thiab Ushio Ins. thiab tau muab cov ntaub ntawv pov thawj thawj zaug hauv lub ntiaj teb uas qhia ncaj qha thiab rov ua kom pom tseeb ntawm cov muaj hwj chim loj 222nm UVC yuav tsis ua rau mob tawv nqaij thiab tseem muaj kev nyab xeeb rau tib neeg qhov muag thiab tawv nqaij.

Pab neeg tshawb nrhiav nthuav tawm cov nas hluav taws rau cov teeb ci ci ultraviolet nyob rau hauv pab pawg sib txawv, ib pab pawg tau pom 222nm tua teeb, thiab lwm pab pawg tau nphav raug UVB teeb (280-315nm).

Tom qab ib lub sijhawm soj ntsuam, pab pawg tshawb xyuas rov tshawb pom tias cov nas raug UVB tsim kev mob qog nqaij daim tawv thiab pom tias muaj kev phiv tshuaj, tab sis cov nas nyob hauv 222nm kab mob teeb pab pawg tsis tau mob qog nqaij hlav cancer txhua.


uv tshawb nrhiav

Pab pawg neeg tshawb nrhiav tseem tshawb xyuas qhov cuam tshuam rau lawv qhov muag, thiab tsis pom muaj qhov txawv txav txawm tias pom hauv lub tshuab tsom iav.

Yog li no, lawv ntseeg tias 222nm UVC muaj peev xwm tua tau cov kab mob me me, zoo li kab mob & kab mob, tab sis tsis muaj kev phom sij rau tib neeg kev noj qab haus huv vim yog qib ntawm daim tawv nqaij nkag.


222nm UVC tua puas tau cov kab mob?


Cov kws tshawb fawb tau paub txog kaum tawm xyoo hais tias cov tshuaj tua kab mob UVC lub teeb muaj yoj yoj ncig 254 nm tuaj yeem siv los ntxuav thiab tua cov kab mob xws li cov chav khoob lossis cov tsheb nres hauv qab, tab sis cov pa hluav taws xob ultraviolet siv tsis tau rau hauv cov chaw muaj neeg coob vim tias nws yog kev noj qab haus huv phom sij.

Yuav kom kov yeej cov teeb meem no, cov kws tshawb fawb tau pib kawm qhov deb-UVC lub teeb (222 nm wavelength).

Kev tshawb nrhiav tshiab ntawm Lub Chaw Rau Kev Tshawb Nrhiav Hluav Taws Xob ntawm Columbia University Irving Medical Center pom tias kev siv tshuaj Far-UVC tsawg kawg tuaj yeem tua cov kab mob khaub thuas sib kis tau rau tib neeg lub cev.


Kev tshawb fawb

Qhov deb-UVC lub teeb muaj lub suab yoj ntawm 222nm muaj qhov txwv tau tsawg heev thiab nws tsis tuaj yeem nkag mus rau tib neeg daim tawv nqaij lossis qhov muag. Tab sis lawv paub tias yuav ua rau muaj mob tuag rau cov kab mob me me xws li kab mob, kab mob, thiab lwm yam.

Vim tias cov kab mob no muaj ntau dua li me me ntawm cov tib neeg hlwb, deb-UVC lub teeb nkag mus rau lawv cov DNA thiab rhuav tshem lawv. Nws thawj zaug nres lawv cov cuab yeej luam tawm thiab muab cov cuab yeej sib txuam ntau ntxiv, tom qab ntawd nres lawv los ntawm kev ua haujlwm.

Nws yog ib txoj hauv kev zoo rau kev tua kab mob ib puag ncig thiab tua cov kab mob vim tias feem ntau ntawm cov kab mob thiab kab mob taug kev los ntawm huab cua.


uvc nrhiav pom


Cov kev nkag siab ntawm cov kab mob me me mus rau qhov deb-UVC teeb pom kev zoo tias nws yuav ua tau tiav thiab muaj kev nyab xeeb siv qhov deb-UVC teeb ci hauv qhov chaw muaj neeg coob nyob sab hauv tsev.

Nyob rau hauv txoj kev no, ib qho chaw muaj neeg coob coob tuaj yeem muab tshuaj tua kab mob thiab ua kom tsis muaj kab mob tsis ua rau tib neeg muaj mob thiab txoj kev pheej hmoo kis tus mob tuaj yeem txo qis hauv qhov chaw muaj neeg coob.


Nws lub suab zoo siab nrog 222nm UVC thiab ntau cov ntawv thov tau tuaj yeem pom.


Cov neeg txawm xav hais tias 222nm UVC tuaj yeem hloov chaw rau cov kua dej ntxuav tes uas tau teeb tsa rau hauv cov chaw pej xeem xws li tsev noj mov, subways, tsev kawm ntawv, chav dej, thiab lwm yam khoom ua rau pom kev sab nraud ntawm 222nm UVC tuaj yeem ntxuav thiab ua rau ntxuav tau tib neeg lub cev.


uv daim ntawv thov


Vim li cas tsis tso 222nm UVC rau hauv kev ua haujlwm?


Lub tswv yim tsim cov duab hluav taws xob ultraviolet ntawm lub nthwv dej ntawm 222nm ntawm cov pej xeem thiab qib hauv zej zog yog qhov zoo thiab nws muaj peev xwm pab tiag tiag kom kov yeej qee hom kab mob uas tuaj yeem kis tau los ntawm ib puag ncig lossis tib neeg kev sib cuag.

Qhov no yeej yuav txo qhov peev nyiaj siv rau kev noj qab haus huv kev lag luam vim tias nws yuav txo qis cov neeg cuam tshuam.

Tab sis qhov no tsis yooj yim los siv.

Muaj ntau yam teebmeem muaj nyob rau hauv kev ua tiav thiab siv cov thev naus laus zis rau cov txivneej txivneej. Ob peb ntawm lawv muaj npe hauv qab:

· Tsis muaj cov ntaub ntawv sim tshawb fawb

Thaum twg cov tshuaj tshiab lossis cov tshuaj tiv thaiv tsim, nws yog thawj kuaj ntawm lwm yam muaj sia uas muaj ntau yam zoo sib xws nrog tib neeg.

Muaj ob peb tus tsiaj uas tau txheeb xyuas los ntawm cov kws tshuaj thiab lawv tsim nyog rau kev sim cov tshuaj tiv thaiv tshiab.


kev xeem ntawv

Piv txwv, feem ntau ntawm cov tshuaj tiv thaiv thawj zaug raug kuaj los ntawm nas. Yog tias thawj theem ntawm lub hom phiaj tau tiav, ces lawv raug sim ntawm tsev neeg ntawm liab. Muaj ntau ntau puag ncig ntawm kev tshuaj ntsuam ntsuas ua ntej siv lawv rau tib neeg. Thaum lawv dhau tag nrho cov chaw kuaj mob, lawv tau muab rau hauv kev ua lag luam rau tib neeg.

Txog tam sim no, tus kws tshawb fawb muaj lawv cov kev tshawb fawb tsuas yog ua pov thawj tias UVC tsis muaj kev phom sij rau cov nas. Lawv yuav tsum tau ntsuas cov kev ntsuas ntawm cov tsiaj sib txawv kom muaj lub suab tsis muaj dab tsi ua rau tib neeg lub neej.

Ntawm qhov tod tes, cov kws tshawb fawb tau nthuav tawm lwm txoj kev xav hais tias tej zaum yuav muaj kev cuam tshuam ntev-cuam tshuam rau tib neeg kev noj qab haus huv yog tias raug ntev-UVC khaws cia rau lub sijhawm ntev dua. Kev rov ua qhov rov qab ua tiav ntawm cov kev ntsuam xyuas ntawm nas, uas tau raug rau 222nm Far-UVC, tau ua pov thawj rau kev phom sij rau nws txoj kev noj qab haus huv.

Cov kws tshawb fawb tau mob siab rau los txhim kho cov ntaub ntawv thiab qhov tshwm sim, txawm tias lawv tsawg heev, uas tuaj yeem tshwm sim los ntawm Far-UVC.

Tsis ntsuas qhov tshwm sim

Vim siv lub tshuab ua tsis tiav, UVC LED nti nrog 222nm Far-UVC tseem nyob rau theem ntawm cov khoom me-ntau lawm. Muaj ntau yam kev sib tw nyob rau hauv cov khoom ntawm 222nm Far-UVC:


uv nqi

(1) Cov Nqi Khoom Siv Raw


Hauv kev tsim khoom me me, cov ntaub ntawv nyoos tau yuav hauv cov khoom me thiab cov ntaub ntawv no tuaj yeem muab rau cov neeg tsim khoom me me ntawm tus nqi siab dua.

(2) Los ntawm cov khoom tsim pov tseg


Hauv kev lag luam me me, nws tsis tuaj yeem siv cov khoom lag luam raws li hauv kev lag luam loj. Cov khoom siv dhau los ntawm cov neeg tsim khoom me me feem ntau yuav mus pov tseg.

(3) Tsis muaj Cov khoom zoo


Hauv kev tsim khoom me me, qhov zoo ntawm cov khoom tsis muaj qauv los yog dhau ntawm qhov xav tau. Nws yog qhov nyuaj muag vim tias cov qauv qis thiab qis cov neeg ua tau zoo.

(4) Tsis Muaj Kev Tshawb Fawb


Kev lag luam me-tau tsawg txoj kev nyob ntawm lawv pov tseg. Lawv tsis tuaj yeem siv nyiaj ntau rau kev tshawb fawb hauv kev tshawb fawb ntawm kev tshawb fawb thiab thev naus laus zis. Ua li no, kev lag luam me tau dhau los ua ib qho kev khuam siab nyob rau hauv txoj kev ntawm kev tshawb fawb thev naus laus zis thiab kev txhim kho kev lag luam.

Tus Nqi Siab Tshaj Lij ntawm UVC LED

Ib qho teeb meem tseem ceeb hauv kev tsim cov 222nm Far-UVC yog tus nqi them rau LED uas ua hluav taws xob tawg. Txawm hais tias qhov no yog ib-zaug them nqi rau cov cuab yeej siv, tab sis nws kuj nce siab dua cov pa LEDs.

Txawm tias 250nm thiab 270nm UVC LED chips yog kim. Xav txog kev txiav txim siab kev tsim kho me me, tus nqi tsim khoom hauv ib chav nce vim tias muaj tus nqi siab ntawm kev ua haujlwm, muaj tsawg heev rau kev faib haujlwm thiab kev siv tshuab tsawg dua.


Yog li ntawd, tus nqi ntawm UVC LED nti nrog 222nm Far-UVC yuav dhau qhov siab tau txais los ntawm cov neeg siv khoom siv.

Txhua qhov, los ntawm qhov muag ntawm tus txiv neej ua lag luam, 222nm UVC tsuas yog lub zeem muag zoo thiab tseem muaj txoj kev taug mus ntev.

Lwm Yam Tshooj: Qhov kawg ntawm tus neeg yuav khoom ntawm koj li UV teeb yuav


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