灰尘影响紫外线照射强度的研究

Dust influence ultraviolet radiation intensity research

目的 为了了解灰尘对紫外线照射强度的影响，为紫外线的使用提供科学依据，对悬吊式紫外线灯管进行了监测。方法把消毒供应室的紫外线灯按照用95％酒精擦拭时间的不同分为三组。然后每组在监测当日按标准方法监测一次，用95％酒精擦拭后，间隔半小时再监测一次。比较两次测量值，计算误差率。结果擦拭前后测量值有统计学差异，平均每支灯管的照射强度上升8．88uw／cm^2。每周一次擦拭的照射强度，明显高于每两周一次和每四周一次。结论空气中灰尘粒子能吸收紫外线，当空气中气溶胶粒子较多时，会对紫外线产生散射作用，影响紫外线照射强度。

Objective To understand that the dust to the ultraviolet radiation intensity＇ s influence, provides the scientific basis to ultraviolet ray＇ s use, we have carried on the monitor to the suspensory uhraviolet ray tube. Methods According to uses of the disinfection supply office＇ s ultraviolet lamp 95% ethyl alcohol cleaning time, they were to divide into differently three groups. Then each group monitors the same day in the monitor according to the standard method one time, after 95% ethyl alcohol cleaning,was separated for a half hour to monitor one time again. Compared with two observed values, computation error coefficient. Results Around cleaning the observed value has the significance difference, the average each tube exposure intensity rises 8.88uw/cm^-2. Once a week cleans the exposure intensity,is higher than obviously each fortnightly with each all around one time. Conclusion Air the dust granule can absorb the ultraviolet ray, when in the air the aerosol particle are many, will have the scattering phenomenon to the ultraviolet ray, will affect the ultraviolet radiation intensity.