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Proceedings Paper

Comparisons of spore dosimetry and spectral photometry for measurement of biologically effective doses of solar UV radiation
Author(s): Nobuo Munakata; David Bolsee; Didier Gillotay; Stylianos Kazadzis; Alkiviadis F. Bais; Kazuo Makita; Lucia Boeira; Nelson J. Schuch
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Paper Abstract

Since our major concern on the stratospheric ozone depletion is possible adverse effects on the biosphere, it is important to establish the way to determine biologically effective doses of solar UV radiation. The spore dosimetry system measuring the lethality of dry bacterial spores on membrane filters has been developed to meet this purpose. The methodology to evaluate experimental correlation with spectral measurements based on the effectiveness calculation has been applied in several field comparisons carried out at Nea Michaniona (Greece), Brussels (Belgium), and Sao Martinho (Brazil). When plotted against UVB irradiance (total energy below 320 nm), the calculated values of MED (minimal erythema dose), SID (spore inactivation dose) and DND (DNA damage dose) exhibited increasing exponents in power regressions, while the exponents from spore dosimetry exceeded those of the calculated values. The results of calculated versus observed values of SID indicate a general convergence at low to modest dose rates, but at high dose rates the calculated ones tended to yield lower values than those obtained from direct biological measurements.

Paper Details

Date Published: 17 January 2002
PDF: 9 pages
Proc. SPIE 4482, Ultraviolet Ground- and Space-based Measurements, Models, and Effects, (17 January 2002); doi: 10.1117/12.452937
Show Author Affiliations
Nobuo Munakata, National Cancer Ctr. Research Institute (Japan)
David Bolsee, Belgian Institute for Space Aeronomy (Belgium)
Didier Gillotay, Belgian Institute for Space Aeronomy (Belgium)
Stylianos Kazadzis, Aristotle Univ. of Thessaloniki (Greece)
Alkiviadis F. Bais, Aristotle Univ. of Thessaloniki (Greece)
Kazuo Makita, Takushoku Univ. (Japan)
Lucia Boeira, National Institute for Space Research (Brazil)
Nelson J. Schuch, National Institute for Space Research (Brazil)


Published in SPIE Proceedings Vol. 4482:
Ultraviolet Ground- and Space-based Measurements, Models, and Effects
James R. Slusser; Jay R. Herman; Wei Gao, Editor(s)

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