Ultraviolet los yog UV rays yog teeb meem rays tawm los ntawm lub hnub. Nws yog ib qho ntawm cov qauv hluav taws xob hluav taws xob hluav taws xob uas nws lub wavelength nyob nruab nrab ntawm 10 nm txog 400 nm. Ntawm qhov tod tes, UV rays nrog ntev wavelengths hu ua ionizing hluav taws xob. Txawm li cas los xij, cov lus qhia zoo li no tau txiav txim siab vim tias photons tsis tau txais lub zog siab tshaj plaws uas yuav tsum tau ua rau ionize atoms.
Txhawm rau thim rov qab lub hnub lub rays, lub ntiaj teb txheej ozone plays lub luag haujlwm tseem ceeb vim nws cuam tshuam nrog kev tawg ntawm UV rays. Tom qab saib mus rau hauv lub wavelengths thiab photon zog, UV rays muab faib ua peb hom: UVA, UVB, thiab UVC.
Hauv kab lus no, koj yuav pom kev nkag siab txog UVA, UVB, thiab UVC, nrog rau lawv cov ncauj lus kom ntxaws sib txawv.
UVA piav qhia
Ib qho tseem ceeb ntawm cov hluav taws xob ultraviolet yog UVA rays. UVA muaj qhov ntev wavelength thiab dav electromagnetic spectrum ntawm ultraviolet hluav taws xob (UVR). UVA plays lub cim tseem ceeb hauv kev mob qog noj ntshav ntawm daim tawv nqaij thiab kev laus ntawm daim tawv nqaij.
Nws tuaj yeem nkag mus tob rau hauv daim tawv nqaij thiab txhawb kev laus ntxov ntxov. Txawm li cas los xij, nws yog thawj kauj ruam ntawm kev tsim wrinkle, kev tshaj lij hu ua photoaging.
UVA rays muaj lub wavelength ntawm 315-400 nm. Txawm li cas los xij, lub zog photon ntawm 3.10 - 3.94 eV, 0.497 - 0.631 eV. Raws li qee txoj haujlwm, qhov zoo ntawm UVA rays yog yuav luag 500 npaug ntau dua li UVB rays. Hauv qhov sib piv, nws tuaj yeem txiav txim siab tias UVA ua raws li cov khoom siv tiv thaiv ntawm daim tawv nqaij thiab inhibits kev nkag mus ntawm UVB rays.
Raws li lub wavelength ntawm UVA rays ntev dua, kev nkag mus tsis yooj yim tau txais. Txawm li cas los xij, cov rays no tsis absorbed los ntawm ozone txheej. Lub teeb UVA lossis lub teeb dub muaj lub ntsej muag violet, muab lub ntsej muag ci ci.
UVB piav qhia
UVB yog lwm hom hluav taws xob pom tsis pom uas tawm ntawm lub hnub. Cov hluav taws xob zoo li no ua rau muaj ntau yam rau cov tawv nqaij darkening thiab yooj yim thickening txheej txheej ntawm daim tawv nqaij. Txawm li cas los xij, qhov laj thawj tseem ceeb ntawm daim tawv nqaij tsaus yog ntau ntau melanin ntau lawm, uas tau raug txhawb los ntawm UVB hluav taws xob.
Tsis tas li ntawd, UVB rays kuj koom nrog kev mob qog noj ntshav ntawm daim tawv nqaij los ntawm kev txo qis lub zog ntawm lub cev tiv thaiv kab mob los tiv thaiv cov xwm txheej zoo li no. Kev khaus ntawm qhov muag vim UVB feem ntau tshwm sim. Txawm li cas los xij, cov tshuaj tiv thaiv kab mob siab tshaj plaws tuaj yeem yog qhov kev xaiv zoo tshaj plaws los tiv thaiv txheej txheej ntawm daim tawv nqaij los ntawm UVB.
Lub wavelength ntawm UVB yog 280 - 315 nm. Tus nqi photon zog yog 3.94 - 4.43 eV, 0.631 - 0.710 eV. UVB tsis muaj qhov ntev wavelength zoo li UVA thiab tuaj yeem tau yooj yim nqus los ntawm txheej ozone. Hauv kev tshawb fawb txog kev kho mob, UVB hluav taws xob yog siv los kho ntau yam teeb meem ntawm daim tawv nqaij xws li vitiligo lossis psoriasis. Tshwj xeeb lasers los yog teeb yog siv thaum lub sij hawm kho, emitting UVB rays.
UVC piav qhia
Lub ozone txheej ntawm lub ntiaj teb ua raws li cov txheej txheem tiv thaiv lub ntiaj teb uas inhibits qhov nkag mus ntawm ultraviolet rays ntawm lub hnub. Txawm li cas los xij, lub ntiaj teb lub hnub ua haujlwm tseem ceeb heev txog UVC hluav taws xob vim nws tuaj yeem yooj yim cuam tshuam UVC rays kom ncav cuag lub ntiaj teb.
Txawm li cas los xij, UVC yog cov tshuaj tua kab mob, thiab yog li nws kuj koom nrog hauv kev kho mob ultraviolet. UVC yog siv tseem ceeb rau kev tiv thaiv cov kab mob hauv huab cua uas tshwm sim los ntawm cov kab mob thiab cov kab mob. Cov hluav taws xob no inhibit qhov kis ntawm cov kab mob uas ua rau muaj kev phom sij ntxiv.
Lub wavelength ntawm UVC yog 100 - 280 nm, thiab nws lub zog photon yog 4.43 - 12.4 eV thiab 0.710 - 1.987 eV. Hauv kev tshawb fawb txog kev kho mob, UVC yog siv rau hauv cov txheej txheem kho qhov txhab los ntawm qee qhov tshwj xeeb lasers thiab teeb. Ntxiv mus, kho vitiligo thiab psoriasis nrog UVC yog ib qho ntawm cov tswv yim tshaj plaws los ntawm ntau tus kws kho mob tshwj xeeb.
Qhov sib txawv ntawm UVA, UVB, & UVC
Cov lus sib piv hauv qab no piv txhua lub teeb ci ntawm ntau lub hauv paus.
| nta | UVA | UVB | UVC |
| Wavelength (nm) | 315 - 400 | 280 - 315 | 100 - 280 |
| Qhov ntev ntawm wavelength | Ntev wavelength UV | Nruab nrab wavelength UV | Luv wavelength UV |
| Photon zog (eV, aJ) | 3.10 - 3.94,0.497 - 0.631 | 3.94 - 4.43,0.631 - 0.710 | 4.43 - 12.4,0.710 - 1.987 |
| Absorption los ntawm txheej ozone | Lub ozone txheej ntawm lub ntiaj teb tsis nqus nws. | Lub ozone txheej feem ntau absorbs nws. | Lub ozone txheej absorbs nws kiag li. |
| Kev nkag mus | Sab hauv txheej ntawm daim tawv nqaij | Qib nruab nrab | saum toj kawg nkaus |
| txim | Kev tsim kho ntawm daim tawv nqaij. | Sunburn thiab malignant melanoma. | Kev kub hnyiab ntawm daim tawv nqaij thiab qhov muag raug mob (photokeratitis). |
- Wavelength
Wavelength qhia txog qhov stretch ntawm cov ntsiab lus dag nyob rau theem zoo tib yam ntawm yoj. Txawm li cas los xij, lub wavelength heev nyob ntawm qhov nruab nrab uas nthwv dej mus. Lub wavelength ntawm UV rays qhia ntev npaum li cas cov nthwv dej tuaj yeem mus. Ntxiv mus, nws conveys kev txav ntawm cov kab teeb ntawm ib qho nruab nrab mus rau lwm qhov. Lub wavelengths ntawm UVA, UVB, thiab UVC yog 315 - 400 nm, 280 - 315 nm, thiab 100 - 280 nm.
- Photon zog
Lub zog nqa los ntawm ib qho proton yog hu ua photon zog. Koj tuaj yeem xav tias photon's wavelength tseem inversely proportional rau nws lub zog. Nyob rau hauv sib piv, nws electromagnetic zaus nce nrog lub photon lub zog. Tsis tas li ntawd, hom hluav taws xob no qhia qhov zaus ntawm txhua qhov photon txog cov kab teeb ntawm lub teeb. Nws tseem piav qhia qhov kev siv ntawm UV hluav taws xob.
- Absorption los ntawm txheej ozone
Lub ntiaj teb txheej txheej ozone tuaj yeem cuam tshuam cov wavelengths ntawm li 200 txog 310 nm. Txawm li cas los xij, nws qhov siab tshaj plaws yog 250 nm. UVA wavelength yog 315 - 400 nm, yog li cov ozone txheej tsis nqus nws. Lub wavelength ntawm UVB thiab UVC yog sib piv tsawg dua, yog li lawv yog ib feem thiab tag nrho soaked, feem.
- Kev nkag mus
Lub wavelength thiab qhov hnyav ntawm UV hluav taws xob txiav txim siab lub zog ntawm cov kab teeb. Raws li UVA wavelength nce, nws tuaj yeem nkag mus tau yooj yim ntawm daim tawv nqaij. UVB perforates mus txog rau nruab nrab cov khaubncaws sab nraud povtseg, whereas UVC tsuas tuaj nyob rau hauv kev sib cuag nrog rau saum npoo.
- txim
Txhua hom UV hluav taws xob provokes cov teeb meem ntawm daim tawv nqaij sib txawv. UVA muaj zog heev hauv stimulating tawv nqaij cancer. Txawm li cas los xij, nws tseem tuaj yeem hais tau tias nws ua haujlwm yog thawj kauj ruam los pib mob qog noj ntshav. Kev raug UVB ntau dhau ua rau raug tshav ntuj thiab ntau dhau ntawm melanin tsim, uas ua rau cov qog nqaij hlav malignant. Kev raug mob rau UVC tuaj yeem ua rau photokeratitis, ua rau qhov muag liab, daim tawv muag o, mob taub hau, thiab qhov muag tsis pom kev.
Effectiveness Of UVC In Inactivating SARS-CoV-2 Replication
Puas yog UVC ua haujlwm muaj peev xwm los ntsuas SARS-CoV-2? Kuj ceeb tias cov lus teb yog yog. Nws muaj txiaj ntsig zoo rau kev sib kis ntawm SARS-CoV-2. Qhov kev ua tau zoo ntawm tus kab mob no tsawg kawg yog xav txog biosafety theem 3 (BSL3) lub chaw soj nstuam.
Txawm li cas los xij, qhov cuam tshuam ntawm tus kab mob tuaj yeem ntsuas tau yooj yim ntawm cov koob tshuaj thiab qhov ntau. Yog tias tus kab mob qhov ntom ntom tau suav tias yog siab, ces 3.7 mJ / cm2 koob tshuaj UVC txaus.
Qhov ntau npaum li cas yog txaus rau inactive lub voj voog ntawm tes thiab yog li inhibit tus kab mob replication. Yog tias ib tus neeg xav tias yuav tsis ua haujlwm tag nrho cov txheej txheem rov ua dua, qhov ntau npaum li cas ntawm 16.9 mJ / cm2 yog xav tau.
UVC yog cov cuab yeej tseem ceeb uas pab cuam tshuam tus kab mob rov qab ntawm ntau yam. Tsis tas li ntawd, lub wavelengths ntawm UV hluav taws xob ua haujlwm feem ntau hauv kev tua cov kab mob phem.
Qhov dav wavelength ntawm UVC, 222 nm, sawv ua qhov zoo tshaj plaws catalyst li tshuaj tua kab mob. Ntxiv mus, qhov tshwj xeeb wavelength no txaus thiab nyab xeeb rau tib neeg thiab yog li tsis plod tam sim ntawd inversely ntawm kev noj qab haus huv. Yog li ntawd, los ntawm kev sib cuag nrog UVC los ntawm KrCl excimer nyob rau hauv cov cheeb tsam dav pab txhawb tus kab mob kis tus kab mob.
KrCl * excimers cuam tshuam kev puas tsuaj hauv nucleic acid thiab protein nrog cov protein ntau dua absorbance nrog wavelengths ntawm ib ncig ntawm 222 nm los ntawm UVC.
FAQ
xaus
Feem ntau, tib neeg muaj kev xav tias UV rays yog teeb meem. Tab sis ntawm qhov tod tes, nws kuj tau ua haujlwm zoo hauv kev ua kom huv huv thiab kev kho mob. UV hluav taws xob qhov cuam tshuam tsis zoo yog qhov tseeb tias nws tau dhau los ua nws qhov zoo junctures. Tom qab saib rau hauv cov subtypes ntawm cov kab teeb no, qhov kev siv thiab kev ua tau zoo tuaj yeem teev tau yooj yim.
Kuj ceeb tias, UVC tuaj yeem ua haujlwm tseem ceeb hauv kev rov ua dua lossis kis tus kab mob SARS-CoV-2. Cov neeg tuaj saib ntseeg tias UV hluav taws xob ib txwm muaj kev cuam tshuam rau tib neeg kev noj qab haus huv. Txawm li cas los xij, qhov tshwj xeeb wavelengths ntawm UV rays ib txwm ua tau zoo los tiv thaiv tib neeg los ntawm tus kab mob tuag taus ua rau lawv lub neej.
LEDYi tsim cov khoom zoo LED strips thiab LED neon flex. Tag nrho peb cov khoom dhau los ntawm cov chaw soj nstuam high-tech los xyuas kom meej qhov zoo tshaj plaws. Dhau li ntawd, peb muab cov kev xaiv customizable ntawm peb LED strips thiab neon flex. Yog li, rau hwm LED sawb thiab LED neon flex, hu rau LEDYi ASAP!
