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Ronald O. Rahn Fluence Measurements Employing Iodide/Iodate Chemical Actinometry as Applied to Upper-Room Germicidal Radiation Photochemistry and Photobiology 89

Version of Record online: 28 JUN 2013 | DOI: 10.1111/php.12094

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The fluence distribution of a facility equipped with germicidal UV lamps has been determined using spherical quartz cells containing an iodide/iodate actinometer. Exposure to UV radiation results in the formation of triiodide whose absorbance is proportional to the amount of radiation absorbed. Using spherical vessels allows radiation from all directions to be measured, i.e. the fluence. When spheres located at various points in a room are simultaneously irradiated, a measure of the fluence distribution can be obtained. The purpose of this report is to show how this system can be used to measure fluence rates using a hand-held colorimeter.

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