紫外(wai)線劑量=輻射照度x照射時間

紫外線殺菌(jun)由兩(liang)個參數共同決定：殺菌(jun)劑量：紫外線的輻射(she)照度(du)（μW/cm2）x 照射(she)時(shi)間（秒）；細菌(jun)類型(xing)及(ji)所處環(huan)境情(qing)況。

目(mu)前市(shi)(shi)面(mian)上大多數紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)殺(sha)(sha)(sha)菌(jun)(jun)(jun)燈(deng)(deng)使用(yong)的(de)是(shi)低壓汞燈(deng)(deng)技術(shu)。根(gen)據(ju)我(wo)國現(xian)行的(de)國標(biao)《GB19258-2012 紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)殺(sha)(sha)(sha)菌(jun)(jun)(jun)燈(deng)(deng)》規定(ding)提(ti)到：本標(biao)準(zhun)適用(yong)于采用(yong)石英玻璃生產的(de)有(you)(you)(you)臭氧或無臭氧，紫(zi)(zi)(zi)(zi)外(wai)(wai)輻射峰(feng)值(zhi)波(bo)長(chang)為253.7nm的(de)雙端(duan)、單端(duan)或自鎮(zhen)流燈(deng)(deng)。由此我(wo)們可(ke)以看到，低壓汞燈(deng)(deng)實際(ji)的(de)紫(zi)(zi)(zi)(zi)外(wai)(wai)殺(sha)(sha)(sha)菌(jun)(jun)(jun)波(bo)長(chang)峰(feng)值(zhi)在253.7nm，這是(shi)目(mu)前市(shi)(shi)面(mian)上人造紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)光源最(zui)有(you)(you)(you)效的(de)紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)殺(sha)(sha)(sha)菌(jun)(jun)(jun)波(bo)長(chang)，這也是(shi)國際(ji)流行的(de)紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)殺(sha)(sha)(sha)菌(jun)(jun)(jun)燈(deng)(deng)標(biao)準(zhun)殺(sha)(sha)(sha)菌(jun)(jun)(jun)波(bo)段(duan)。根(gen)據(ju)國標(biao)《GB19258-2012 紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)殺(sha)(sha)(sha)菌(jun)(jun)(jun)燈(deng)(deng)》里對殺(sha)(sha)(sha)菌(jun)(jun)(jun)燈(deng)(deng)的(de)要求：紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)輻射照(zhao)度以μW/cm2作為單位，用(yong)來表(biao)示紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)殺(sha)(sha)(sha)菌(jun)(jun)(jun)燈(deng)(deng)的(de)輻射強度。測(ce)試(shi)距離(li)要求為1000mm±1mm，也就是(shi)燈(deng)(deng)管表(biao)面(mian)到計量儀器表(biao)面(mian)的(de)距離(li)。紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)劑量直(zhi)接影響了紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)殺(sha)(sha)(sha)菌(jun)(jun)(jun)燈(deng)(deng)的(de)殺(sha)(sha)(sha)菌(jun)(jun)(jun)效果(guo)，同時紫(zi)(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)(xian)(xian)的(de)殺(sha)(sha)(sha)菌(jun)(jun)(jun)力還跟具體(ti)的(de)細菌(jun)(jun)(jun)類型、溫度、濕度及照(zhao)射時間有(you)(you)(you)關。

綜合來說，紫(zi)外線(xian)對每種細菌(jun)的(de)殺(sha)菌(jun)力取(qu)決于殺(sha)菌(jun)劑量，即紫(zi)外線(xian)的(de)輻(fu)(fu)射(she)照(zhao)度（μW/cm2）x 照(zhao)射(she)時間(jian)（秒）。通常，如果(guo)將照(zhao)射(she)時間(jian)加倍，則即使將紫(zi)外線(xian)照(zhao)度減半也能夠獲(huo)得相同的(de)殺(sha)菌(jun)效果(guo)。殺(sha)菌(jun)效果(guo)受(shou)照(zhao)射(she)時間(jian)、距(ju)離和(he)紫(zi)外線(xian)殺(sha)菌(jun)燈輻(fu)(fu)射(she)照(zhao)度的(de)影響，在照(zhao)射(she)時間(jian)和(he)距(ju)離相同的(de)情況下，輻(fu)(fu)射(she)照(zhao)度越大的(de)產(chan)品，殺(sha)菌(jun)效果(guo)越好。

朗普(pu)科技LP-GZ302、LP-GZ402紫外線(xian)殺菌燈強度(du)優于最新GB1258國標，紫外線(xian)輻射強度(du)高(gao)達180μw/cm2！符合國家消毒(du)技術規范。