Investigation of unstabilized polyvinyl chloride (PVC) for use as a long-term UV dosimeter: preliminary results

Amar, Abdurazaq and Parisi, Alfio V. (2012) Investigation of unstabilized polyvinyl chloride (PVC) for use as a long-term UV dosimeter: preliminary results. In: 37th Annual Conference of the Australasian Radiation Protection Society (ARPS 2012): Radiation Safety: Bridging the Gap , 14-17 Oct 2012, Sydney, Australia.

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Abstract

A new chemical UV dosimeter with a larger dose-capacity than the existing chemical dosimeters has been investigated for long-term UV measurements. Unstabilized Polyvinyl chloride (PVC), cast in 40 μm thick film, has been found to respond to at least 745 SED (Standard Erythema Dose = 100 J/m2) of erythemal solar UV radiation. This is equivalent to about two to three summer weeks of exposure in subtropical sites. The UV-induced changes in the PVC dosimeter were quantified using a Fourier Transform Infrared (FTIR) spectrophotometer and the decrease in the absorption intensity of the 1064 cm-1 peak was employed to quantify these changes. Dose response curves have been established by relating the decrease in the PVC dosimeter's absorption intensity at 1064 cm-1 to the corresponding erythemal UV exposure. The spectral response of the dosimeter was measured and found to be comparable to the erythema action spectrum. Some other optical characteristics of the dosimeter, such as the dose-rate dependency and the angular response were analysed. The dosimeter was found to have the potential to measure long periods of exposure to solar UV radiation as well as exposures to artificial UV.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Lecture)
Refereed: No
Item Status: Live Archive
Additional Information: No evidence of copyright restrictions. Conference publication consists of only the abstracts of papers presented at the conference. Only Abstract available of oral presentation.
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 29 Apr 2013 00:23
Last Modified: 15 Sep 2017 04:40
Uncontrolled Keywords: dosimetry; UV; erythemal; exposure
Fields of Research : 09 Engineering > 0903 Biomedical Engineering > 090303 Biomedical Instrumentation
04 Earth Sciences > 0401 Atmospheric Sciences > 040103 Atmospheric Radiation
02 Physical Sciences > 0299 Other Physical Sciences > 029901 Biological Physics
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
URI: http://eprints.usq.edu.au/id/eprint/22965

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