Measurement of UVA Exposure to Solar Radiation |
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| Authors: | J. C. F. Wong A. V. Parisi |
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| Affiliation: | School of Physics, Queensland University of Technology, Brisbane, Australia;Centre for Astronomy and Atmospheric Research, University of Southern Queensland, Toowoomba, Australia |
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| Abstract: | Exposure to solar UVA (320–400 nm) radiation can damage DNA and lead to skin disorders. Conventional dosim-etry using a single piece of polysulfone or diglycol carbonate (CR-39) cannot provide accurate measurement of the biologically effective irradiance for erythema for the UVA waveband. A package employing four dosimeters (polysulfone, nalidixic acid, 8-methoxypsoralen and phe-nothiazine) has been shown to be effective for use as a spectrum evaluator for evaluating the UVA source spectrum. In Brisbane, on a horizontal position, the spectrum evaluator requires about 5 min exposure in summer and about 20 min in winter. This amounts to about 10 mJ cm-2 of erythemal UV radiation. |
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