Dab tsi UV Band yog qhov phom sij tshaj plaws?

Ultraviolet lub teebtuaj yeem muab faib ua plaub thaj tsam raws li qhov sib txawv wavelengths, luv yoj ultraviolet lub teeb rau luv luv UVC, wavelength 200-280nm, nruab nrab yoj ultraviolet lub teeb rau luv UVB, wavelength 280-320nm, ntev yoj ultraviolet lub teeb rau luv UVA , wavelength 320-400nm, UVD wavelength 100-200nm, los yog lub tshuab nqus tsev ultraviolet lub teeb.

UVA:

Ntev yoj UVA, wavelength ntawm 320 ~ 400 nanometers, tseem hu ua ntev nthwv dej tsaus nti nyhuv ultraviolet. Nws muaj zog nkag mus rau hauv cov iav, txawm tias cuaj taw dej; Thiab txhua xyoo puag ncig, txawm tias huab lossis tshav ntuj, nruab hnub thiab hmo ntuj muaj nyob.

Qib ntawm kev puas tsuaj rau tib neeg lub cev: ntau dua 95 feem pua ​​​​ntawm cov kab hluav taws xob ultraviolet raug rau ntawm daim tawv nqaij niaj hnub yog UVA, yog li nws muaj kev phom sij ntau rau ntawm daim tawv nqaij. UVA tuaj yeem tawm tsam los ntawm epidermis, ua rau muaj kev puas tsuaj loj rau collagen thiab elastin hauv daim tawv nqaij. Thiab lub cell lub peev xwm los tiv thaiv nws tus kheej tsis zoo, thiab ib qho me me ntawm UVA tuaj yeem ua rau muaj kev puas tsuaj loj. Thaum lub sij hawm, daim tawv nqaij tsim teeb meem xws li laxity, wrinkles, thiab tshwm sim ntawm microvessels. Nyob rau tib lub sijhawm, nws tuaj yeem qhib tyrosinase, uas ua rau melanin tso tawm tam sim ntawd thiab tsim cov melanin tshiab, ua rau cov tawv nqaij tsaus thiab tsis ci. UVA tuaj yeem ua rau lub sijhawm ntev, ntev, thiab kev puas tsuaj ntev thiab ua rau lub hnub nyoog ntxov ntawm daim tawv nqaij, yog li nws tseem hu ua aging rays.

Daim ntawv thov: UVA ultraviolet lub teeb ntawm 360nm wavelength yog nyob rau hauv txoj kab nrog phototaxis teb nkhaus ntawm kab, thiab tuaj yeem tsim los ntxias cov kab. UVA ultraviolet lub teeb ntawm 300-420nm wavelength tsuas tuaj yeem tawg nyob ze-ultraviolet lub teeb nruab nrab ntawm 365nm los ntawm cov xim iav tshwj xeeb uas txiav tawm tag nrho cov teeb pom kev zoo, uas tuaj yeem siv rau kev txheeb xyuas ore, theem kho kom zoo nkauj, tshuaj xyuas nyiaj txiag, thiab lwm qhov chaw. .

UVB:

Nruab nrab nthwv dej UVB, wavelength ntawm 275 ~ 320 nanometers, los yog lub nruab nrab nthwv dej liab qhov chaw ntawm ultraviolet. Kev nkag mus nruab nrab, nws qhov luv luv wavelength yuav nqus los ntawm cov iav pob tshab, lub hnub ci muaj UVB feem ntau absorbed los ntawm ozone txheej, tsuas yog tsawg dua 2 feem pua ​​​​ntawm lub ntiaj teb nto, nyob rau lub caij ntuj sov thiab yav tav su yuav muaj zog tshwj xeeb. Qib ntawm kev puas tsuaj rau tib neeg lub cev: nws yuav oxidize tiv thaiv lipid txheej ntawm epidermis, ua rau daim tawv nqaij qhuav; Tsis tas li ntawd, cov nucleic acids thiab cov proteins nyob rau hauv cov hlwb epidermal yog denatured, ua rau cov tsos mob xws li mob dermatitis (uas yog, sunburn), thiab daim tawv nqaij yuav liab thiab mob. Hauv qhov xwm txheej hnyav, xws li raug lub hnub ntev, nws tuaj yeem ua rau mob qog noj ntshav tau yooj yim. Tsis tas li ntawd, kev puas tsuaj mus ntev rau UVB kuj tseem tuaj yeem ua rau melanocytes hloov pauv, ua rau lub hnub me me uas nyuaj rau tshem tawm.

Daim ntawv thov: ultraviolet noj qab haus huv teeb, cog kev loj hlob teeb yog muab los ntawm kev siv tshwj xeeb violet iav (tsis yog los ntawm lub teeb hauv qab no 254nm) thiab lub ncov nyob ze 300nm phosphor ua.

UVC:

Luv-yoj UVC, wavelength ntawm 200 ~ 275 nm, tseem hu ua luv-yoj sterilization ultraviolet. Nws muaj peev xwm nkag mus tsis muaj zog tshaj plaws thiab tsis tuaj yeem nkag mus rau feem ntau pob tshab iav thiab yas. Lub shortwave ultraviolet rays uas muaj nyob rau hauv tshav ntuj yuav luag tag absorbed los ntawm ozone txheej ua ntej lawv mus txog hauv av. Lub degree ntawm kev puas tsuaj rau tib neeg lub cev: UVC nyob rau hauv cov xwm yog absorbed los ntawm lub ozone txheej vim hais tias nws tsis mus txog rau hauv av, thiab cov kev cuam tshuam ntawm daim tawv nqaij yuav raug ignored, tab sis qhov tseeb, lub luv luv-yoj ultraviolet rays yog heev teeb meem. tib neeg lub cev, thiab tsis tuaj yeem ncaj qha irradiate tib neeg lub cev. Yog tias raug raug ncaj qha, qhov raug luv luv tuaj yeem hlawv daim tawv nqaij, thiab qhov ntev ntev los yog siv zog heev tuaj yeem ua rau mob qog noj ntshav.

Daim ntawv thov:Ultraviolet germicidal teeb yog tawm los ntawm UVC luv-yoj ultraviolet. Shortwave UV yog dav siv nyob rau hauv tsev kho mob, cua txias tshuab, tshuaj tua kab mob, cov khoom siv kho dej, cov chaw haus dej haus, dej phwj tuaj kho, pas dej da dej, khoom noj khoom haus thiab dej haus ua thiab ntim khoom, khoom noj khoom haus factories, tshuaj pleev ib ce factories, mis nyuj factories, breweries, dej haus factories. , bakeries thiab chav txias thiab lwm qhov chaw.

Qhov zoo thiab qhov tsis zoo ntawm UV

Feem ntau, qhov zoo thiab qhov tsis zoo ntawm UV:

Uv zoo:

1) tshuaj tua kab mob thiab ua kom tsis muaj menyuam;

2) Txhawb kev txhim kho pob txha;

3) Zoo rau cov ntshav xim;

4) Qee zaus tuaj yeem kho qee yam kab mob ntawm daim tawv nqaij;

5) Muaj peev xwm txhawb cov mineral metabolism thiab vitamin D tsim nyob rau hauv lub cev.

Disadvantages ntawm ultraviolet lub teeb:

1) wrinkles tshwm sim los ntawm daim tawv nqaij laus;

2) Tsim cov chaw;

3) Ua rau dermatitis;

4) Ua rau mob qog noj ntshav.

UVC UV puas rau tib neeg lub cev:

Qhov tseem ceeb ntawm UVC UV puas rau tib neeg lub cev yog qhov muag thiab liab qab ntawm daim tawv nqaij. Lub sij hawm luv luv high-intensity irradiation tuaj yeem hlawv lub qhov muag thiab tawv nqaij, thiab kev siv lub sij hawm ntev tuaj yeem ua rau mob qog noj ntshav.

Kev nkag mus ntawm UVC ultraviolet lub teeb yog qhov tsis muaj zog, thiab cov iav pob tshab zoo tib yam, khaub ncaws, plastics, plua plav, thiab lwm yam, tuaj yeem thaiv tag nrho. Yog li ntawd, hnav looj tsom iav tiv thaiv UV (yog tias tsis muaj tsom iav, tsis txhob saib ncaj qha ntawm lub teeb UV) thiab npog cov tawv nqaij kom ntau li ntau tau tuaj yeem tiv thaiv qhov muag thiab tawv nqaij los ntawm UVC UV puas.

Kev raug ultraviolet luv luv yog zoo li raug rau lub hnub kub, uas tsis ua mob rau tib neeg lub cev tab sis muaj txiaj ntsig zoo. UVB ultraviolet lub teeb tuaj yeem txhawb cov mineral metabolism thiab vitamin D tsim hauv lub cev.

Cov ntsiab cai tiv thaiv UVC UV puas:

1) Hnav looj tsom iav tiv thaiv UV lossis lub ntsej muag tiv thaiv UV;

2) Tsis txhob saib ncaj qha ntawm UV teeb;

3) Hnav khaub ncaws ntev los npog cov tawv nqaij liab qab xws li txhais tes;

4) Siv cov khoom nyob ib puag ncig koj los thaiv UV rays, xws li phab ntsa, rooj tog, ntaub, ntaub, ntawv xov xwm, thiab lwm yam.

5) Tsis txhob raug ultraviolet lub teeb mus ntev, luv luv raug rau tib neeg lub cev tsis muaj teeb meem.

Tiv tauj xov tooj:

Yog tias koj muaj lus nug, thov hu rau peb. Txawm peb cov neeg muas zaub nyob qhov twg thiab peb cov kev xav tau yog dab tsi, peb yuav ua raws li peb lub hom phiaj los muab peb cov neeg siv khoom zoo, tus nqi qis, thiab kev pabcuam zoo tshaj plaws.