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LOW AND MODERATE IRRADIANCES OF UVB AND UVC IRRADIATION ARE EQUALLY ERYTHEMOGENIC IN HUMAN SKIN *
Author(s) -
Park Y. K.,
Gange R. W.,
Levins P. C.,
Parrish J. A.
Publication year - 1984
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1984.tb05357.x
Subject(s) - irradiance , erythema , human skin , exposure duration , irradiation , ultraviolet radiation , ultraviolet , toxicology , dermatology , chemistry , medicine , biology , optics , radiochemistry , physics , nuclear physics , genetics
—The effect of irradiance on ultraviolet‐induced delayed erythema was studied in normal human skin. With both UVB and UVC radiation, the minimal erythema dose was the same whether exposure lasted several seconds or 5 h. A reciprocal relationship between exposure duration and irradiance has previously been shown to exist for exposures ranging from nanoseconds to minutes. The present study shows that even if exposures last over 4 h the minimal erythema dose is a function of exposure dose and not of irradiance or exposure duration.