Uv dosimeters based on neotetrazolium chloride

A. Mills, P. Grosshans, M. McFarlane

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A novel UV dosimeter is described comprising a tetrazolium dye, neotetrazolium chloride (NTC), dissolved in a film of polymer, polyvinyl alcohol (PVA). The dosimeter is pale yellow/colourless in the absence of UV light, and turns red upon exposure to UV light. The spectral characteristics of a typical UV dosimeter film and the mechanism through which the colour change occurs are detailed. The NTC UV dosimeter films exhibit a response to UV light that is related to the intensity and duration of UV exposure, the level of dye present in the films and the thickness of the films themselves. The response of the dosimeter is temperature independent over the range 20-40 °C and, like most UV dosimeters, exhibits a cosine-like response dependence upon irradiance angle. The introduction of a layer of a UV-screening compound which slows the rate at which the dosimeter responds to UVR enables the dosimeter response to be tailored to different UV doses. The possible use of these novel dosimeters to measure solar UV exposure dose is discussed.
LanguageEnglish
Pages136-141
Number of pages5
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume201
Issue number2-3
DOIs
Publication statusPublished - 25 Jan 2009

Fingerprint

Dosimeters
dosimeters
Chlorides
chlorides
Ultraviolet radiation
Dosimetry
Coloring Agents
Dyes
dyes
neotetrazolium
Polyvinyl Alcohol
dosage
polyvinyl alcohol
Polyvinyl alcohols
irradiance
Screening
Polymers
screening
Color
color

Keywords

  • UV dosimeter
  • Tetrazolium
  • UV index
  • MED

Cite this

Mills, A. ; Grosshans, P. ; McFarlane, M. / Uv dosimeters based on neotetrazolium chloride. In: Journal of Photochemistry and Photobiology A: Chemistry. 2009 ; Vol. 201, No. 2-3. pp. 136-141.
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Uv dosimeters based on neotetrazolium chloride. / Mills, A.; Grosshans, P.; McFarlane, M.

In: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 201, No. 2-3, 25.01.2009, p. 136-141.

Research output: Contribution to journalArticle

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