Dosimeter for the measurement of plant damaging solar UV exposures

Turner, J. and Parisi, A. V. and Turnbull, D. J. (2009) Dosimeter for the measurement of plant damaging solar UV exposures. Agricultural and Forest Meteorology, 149 (8). pp. 1301-1306. ISSN 0168-1923

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Abstract

The development of a dosimeter for the measurement of the biologically effective UV exposures (UVPGI) for plant growth inhibition in higher plants based on a recently reported action spectrum is presented. The new dosimeter is based on the two photoactive materials polysulphone and nalidixic acid, each in thin film form layered on top of one another to provide a combined response. The quantitative characteristics of the UVPGI dosimeter were measured, including the spectral response, dose response, dark reaction and cosine response. The spectral response of the new dosimeter has been successfully extended into the UVA waveband. The dark reaction was within a reasonable limit that could be taken into account when measurements are taken by measuring the post-exposure absorbances at a consistent time period after the exposure. The cosine response approximated the cosine function to better than 15% for solar zenith angles up to 50°. The dose response shows that the new dosimeter can be employed for the measurement of UVPGI exposures and has reproducibility comparable to other dosimeters calibrated to a biological action spectrum.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author's Original deposited in accordance with the copyright policy of the publisher.
Depositing User: Ms Joanna Turner
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 04 Jun 2009 05:16
Last Modified: 02 Jul 2013 23:19
Uncontrolled Keywords: dosimeter; UV; plant; action spectrum; solar
Fields of Research (FOR2008): 06 Biological Sciences > 0607 Plant Biology > 060705 Plant Physiology
02 Physical Sciences > 0299 Other Physical Sciences > 029999 Physical Sciences not elsewhere classified
10 Technology > 1001 Agricultural Biotechnology > 100101 Agricultural Biotechnology Diagnostics (incl. Biosensors)
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: doi: 10.1016/j.agrformet.2009.03.002
URI: http://eprints.usq.edu.au/id/eprint/5294

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