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Improved Ultraviolet Radiation Film Dosimetry Using OrthoChromic OC‐1 Film
Photochemistry and Photobiology ( IF 2.6 ) Pub Date : 2020-12-28 , DOI: 10.1111/php.13364
David Welch 1 , David J Brenner 1
Affiliation  

There is growing interest in far-UVC lighting, defined as wavelengths from 200 to 230 nm, because research has demonstrated these wavelengths to be an effective antimicrobial technology while posing a minimal hazard to human health. Far-UVC lighting is now being installed to directly irradiate spaces where humans are present, and it will be important to perform measurements to verify far-UVC lighting installations are operating within widely accepted exposure guidelines. In this work we explore the use of a commercially available film, known as OrthoChromic OC-1, to measure ultraviolet radiation exposure. The film was tested with a variety of ultraviolet wavelengths and irradiance conditions, and the color change of the film was analyzed for increasing levels of radiant exposure. The film response extended over a dynamic range that was greater than the recommended exposure limits for far-UVC radiation so it can potentially be useful for health hazard monitoring. The spectrum of the incident ultraviolet radiation strongly affected the response of the film, therefore for accurate measurements we recommend the measured spectrum match the spectrum used for calibration. Overall, dosimetry with this film provides a simple, accurate, and inexpensive method of quantifying ultraviolet radiation exposure that is suitable for far-UVC measurements.

中文翻译:

使用 OrthoChromic OC-1 薄膜改进紫外线辐射薄膜剂量测定

人们对定义为 200 至 230 nm 波长的远紫外光照明越来越感兴趣,因为研究表明这些波长是一种有效的抗菌技术,同时对人类健康的危害最小。现在正在安装远紫外线照明以直接照射人类所在的空间,并且执行测量以验证远紫外线照明装置是否在广泛接受的暴露准则范围内运行非常重要。在这项工作中,我们探索了使用市售薄膜(称为 OrthoChromic OC-1)来测量紫外线辐射暴露。用各种紫外线波长和辐照度条件对薄膜进行了测试,并分析了薄膜的颜色变化以增加辐射暴露水平。薄膜响应扩展的动态范围大于远 UVC 辐射的推荐暴露限值,因此它可能对健康危害监测有用。入射紫外辐射的光谱强烈影响薄膜的响应,因此为了准确测量,我们建议测量的光谱与用于校准的光谱相匹配。总体而言,这种胶片的剂量测定提供了一种简单、准确且廉价的方法来量化适合远 UVC 测量的紫外线辐射暴露。因此,为了进行精确测量,我们建议测量的光谱与用于校准的光谱相匹配。总体而言,这种胶片的剂量测定提供了一种简单、准确且廉价的方法来量化适合远 UVC 测量的紫外线辐射暴露。因此,为了进行精确测量,我们建议测量的光谱与用于校准的光谱相匹配。总体而言,这种胶片的剂量测定提供了一种简单、准确且廉价的方法来量化适合远 UVC 测量的紫外线辐射暴露。
更新日期:2020-12-28
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