LED紫光(guang)線殺菌(jun)燈波長是(shi)多少(shao)?

紫(zi)外(wai)(wai)線(xian)按波(bo)長(chang)(chang)通常分為(wei)長(chang)(chang)、中、短波(bo)三種：波(bo)長(chang)(chang)為(wei)380~320nm的長(chang)(chang)波(bo)紫(zi)外(wai)(wai)線(xian)簡稱UVA，波(bo)長(chang)(chang)為(wei)320~280nm的中波(bo)紫(zi)外(wai)(wai)線(xian)簡稱UVB，波(bo)長(chang)(chang)短于280nm的短波(bo)紫(zi)外(wai)(wai)線(xian)簡稱UVC。

目前市場上銷售的(de)紫外線消毒(du)燈，大(da)多(duo)數是(shi)利(li)用汞燈發(fa)出的(de)254nm的(de)短波紫外線(UVC)來實現(xian)消毒(du)的(de)。

led光源(yuan)不(bu)同的(de)顏色的(de)波長不(bu)同

藍色(se)430nm

超(chao)亮黃色595nm

較亮藍(lan)色468nm

高亮桔色610nm

超(chao)亮桔色620nm

青綠色502nm

最亮紅色630nm

純(chun)綠555nm

這是幾(ji)種常見的顏色(se)的波長。

殺菌(jun)用紫外(wai)線(xian)燈強度(du)測量的(de)波長范圍(wei)?

紫(zi)外(wai)線(xian)(xian)是指(zhi)波(bo)長(chang)在200nm～380nm之間(jian)的太陽(yang)光(guang)線(xian)(xian),包括3類：UV-A波(bo)長(chang)為315nm～380nm,UV-B波(bo)長(chang)為280nm～315nm,UV-C波(bo)長(chang)200nm～280nm.到達地球表面(mian)的太陽(yang)光(guang)線(xian)(xian)(290nm—2000nm)中紫(zi)外(wai)線(xian)(xian)約占13%,其(qi)中UV-A占97%,UV-B占3%,UV-C接近于0.對人皮膚損傷的只有UV-A、UV-B.通(tong)過特殊(shu)工(gong)藝制(zhi)成的UV-C紫(zi)外(wai)線(xian)(xian)燈,用來(lai)進行消毒(du)滅菌.

其中真正(zheng)具(ju)(ju)有殺菌(jun)作用的是(shi)uv-C波紫(zi)外(wai)(wai)(wai)線(xian),尤(you)以(yi)波長254nm左右的紫(zi)外(wai)(wai)(wai)線(xian)最佳.紫(zi)外(wai)(wai)(wai)線(xian)可以(yi)殺滅各種(zhong)微生物,包(bao)括細菌(jun)繁殖體、芽(ya)胞、分支(zhi)桿菌(jun)、病毒、真菌(jun)、立克次體和支(zhi)原體等,具(ju)(ju)有廣(guang)譜性(xing).

不同(tong)(tong)波段的(de)紫(zi)外(wai)線(xian)(xian)殺(sha)菌(jun)(jun)能(neng)力不同(tong)(tong),只有短波紫(zi)外(wai)線(xian)(xian)(200-300nm)才能(neng)對(dui)細菌(jun)(jun)有殺(sha)滅能(neng)力,其(qi)中在250-270nm范圍殺(sha)菌(jun)(jun)力最強,不同(tong)(tong)材料制造的(de)紫(zi)外(wai)線(xian)(xian)燈(deng)(deng)成本和性能(neng)也(ye)(ye)不一(yi)(yi)樣.真正高(gao)強度(du)(du)、長壽命的(de)紫(zi)外(wai)線(xian)(xian)燈(deng)(deng)必需是采(cai)用(yong)石(shi)英(ying)玻(bo)(bo)璃制造,這種(zhong)燈(deng)(deng)也(ye)(ye)叫石(shi)英(ying)殺(sha)菌(jun)(jun)燈(deng)(deng),它分(fen)兩種(zhong)類型(xing)(xing)：高(gao)臭(chou)氧(yang)型(xing)(xing)和低(di)臭(chou)氧(yang)型(xing)(xing),在消毒柜一(yi)(yi)般采(cai)用(yong)高(gao)臭(chou)氧(yang)型(xing)(xing),這也(ye)(ye)是石(shi)英(ying)紫(zi)外(wai)線(xian)(xian)燈(deng)(deng)相對(dui)其(qi)他紫(zi)外(wai)線(xian)(xian)燈(deng)(deng)的(de)一(yi)(yi)個顯著(zhu)特點,此外(wai),它產生(sheng)的(de)紫(zi)外(wai)線(xian)(xian)強度(du)(du)高(gao),是高(gao)硼燈(deng)(deng)的(de)1.5倍以上,并且,紫(zi)外(wai)線(xian)(xian)輻(fu)射強度(du)(du)壽命長.最可靠的(de)分(fen)辨方法是用(yong)紫(zi)外(wai)線(xian)(xian)輻(fu)照度(du)(du)計(ji)254 nm探(tan)頭(tou)來測,同(tong)(tong)樣功率,254 nm紫(zi)外(wai)線(xian)(xian)強度(du)(du)最高(gao)的(de)是石(shi)英(ying)紫(zi)外(wai)線(xian)(xian)燈(deng)(deng).其(qi)次是高(gao)硼玻(bo)(bo)璃紫(zi)外(wai)線(xian)(xian)燈(deng)(deng),高(gao)硼玻(bo)(bo)璃燈(deng)(deng)紫(zi)外(wai)光(guang)強度(du)(du)很容(rong)易衰減,它點燈(deng)(deng)數百小(xiao)時后其(qi)紫(zi)外(wai)光(guang)強度(du)(du)就大幅下降,降到初(chu)始(shi)時的(de)50%-70%.

用一個簡單的方法測試：把這種燈(deng)在節(jie)能燈(deng)或日光(guang)燈(deng)旁(pang)邊點(dian)亮,它(ta)(ta)不能激(ji)化管內熒光(guang)粉發光(guang),就(jiu)可(ke)證實它(ta)(ta)是名符其實的假(jia)冒(mao)偽劣產品.另外,紫外線(xian)燈(deng)管應定期檢測,照(zhao)度下(xia)降50%就(jiu)應更(geng)換

 測(ce)量(liang)波(bo)(bo)長是用光譜儀(yi)。UV紫外線就4個波(bo)(bo)段，您不確定是哪個波(bo)(bo)段還可以(yi)用UV檢測(ce)儀(yi)，全波(bo)(bo)段檢測(ce)，如果UVA有數據顯示波(bo)(bo)長就是UVA，或者(zhe)全波(bo)(bo)段都有顯示，或者(zhe)UVB有數據顯示。通常(chang)情況下(xia)UV固化都是UVA波(bo)(bo)長365nm峰值也(ye)有395nm。