Faculty of Sciences, University of Southern Queensland, Toowoomba, Australia.
J Photochem Photobiol B. 2013 Mar 5;120:98-103. doi: 10.1016/j.jphotobiol.2013.02.003. Epub 2013 Feb 14.
Dosimeters are used in measuring received ultraviolet (UV) radiation by humans and plants. Previously dosimeters 3.0cm×3.0cm weighing 0.6g, using poly(2,6-dimethyl-1,4-phenylene oxide) (PPO)(1) as the photoactive material have been used. A smaller 1.0cm×1.5cm flexible PPO dosimeter weighing 0.05g has been developed and characterised in this research. Laboratory and field studies show that the miniaturised dosimeter measures comparative results to the larger dosimeters for cosine response, dark reaction and dose response. The smaller, flexible dosimeters are also more applicable for use on curved surfaces and have less impact on the orientation of plant leaves due to their decreased mass. This research has also shown that miniaturised PPO dosimeters can be successfully employed on plant and human subjects to accurately determine biologically active UV distributions. The miniaturised PPO dosimeters allow for more measurements over an exposed area and the PPO film allows for measurements to be made for periods longer than 1day. The combination of smaller size and longevity of the photoactive material allows for more flexibility in future UV field research resulting in an increase in the potential number of environments where UV dosimeters can be deployed.
剂量计用于测量人类和植物接收到的紫外线 (UV) 辐射。以前，使用的是重 0.6 克、尺寸为 3.0cm×3.0cm 的聚(2,6-二甲基-1,4-苯撑氧)(PPO)(1)作为光活性材料的 3.0cm×3.0cm 剂量计。本研究中开发并表征了一种更小的 1.0cm×1.5cm 柔性 PPO 剂量计，重量为 0.05g。实验室和现场研究表明，微型剂量计在余弦响应、暗反应和剂量响应方面与较大剂量计的测量结果相当。由于质量较小，较小、较灵活的剂量计也更适用于曲面，并且对植物叶片的方向的影响更小。本研究还表明，微型 PPO 剂量计可成功用于植物和人体，以准确确定生物有效 UV 分布。微型 PPO 剂量计允许在暴露区域进行更多测量，并且 PPO 膜允许进行超过 1 天的测量。由于光活性材料的尺寸更小和寿命更长，因此在未来的 UV 现场研究中具有更大的灵活性，从而增加了可以部署 UV 剂量计的环境数量。
