Underwater deployment of the polyphenylene oxide dosimeter combined with a neutral density filter to measure long-term solar UVB exposures

Schouten, P. W. and Parisi, A. V. (2012) Underwater deployment of the polyphenylene oxide dosimeter combined with a neutral density filter to measure long-term solar UVB exposures. Journal of Photochemistry and Photobiology B: Biology, 112. pp. 31-36. ISSN 1011-1344

Abstract

Numerous studies have conclusively shown how solar ultraviolet radiation (UV) (290-400 nm) has a negative impact upon underwater ecosystems. As a consequence of this, UV must be accurately evaluated in aquatic locations by employing a non-invasive measurement technique in order to better understand the damage it causes on both a macro and micro scale and provide solutions on how to manage its impact over both short and long time scales. Specifically, the UVB (290-320 nm) has the highest potential for causing stress to marine organisms. This manuscript details the deployment of a cost-effective and easily useable UVB detection dosimeter based on polyphenylene oxide (PPO) combined with a neutral density filter (NDF) derived from polyethylene. A long-term calibration regime performed over an extensive solar zenith angle range (SZA) in summer at a semi-tropical location showed that the PPO dosimeter used in conjunction with a polyethylene NDF could measure UVB exposures underwater up to 125 hours in daylight (11 to 12 days approximately) before reaching near total saturation, providing an exposure limit as much as seven times greater that what was previously achievable with PPO dosimeters deployed without an NDF and approximately 42 times larger than those measured previously with polysulphone dosimeters.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 03 Jun 2013 01:09
Last Modified: 21 Jul 2014 04:07
Uncontrolled Keywords: ultraviolet; polphenylene oxide dosimetry; neutral filter; underwater; PPO
Fields of Research : 06 Biological Sciences > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl. Marine Ichthyology)
02 Physical Sciences > 0299 Other Physical Sciences > 029901 Biological Physics
04 Earth Sciences > 0401 Atmospheric Sciences > 040103 Atmospheric Radiation
Socio-Economic Objective: D Environment > 96 Environment > 9610 Natural Hazards > 961006 Natural Hazards in Marine Environments
Identification Number or DOI: 10.1016/j.jphotobiol.2012.04.004
URI: http://eprints.usq.edu.au/id/eprint/21291

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