Department of Applied Physics, Okayama University of Science, 1-1 Ridai, Okayama, 700-0005, Japan.
Health Phys. 2010 Feb;98(2):352-9. doi: 10.1097/01.HP.0000346705.98995.e7.
Imaging plates sensitive to beta rays were used to obtain the images of 90Sr in tooth samples taken from mammals collected in contaminated areas of the former Soviet Union. The average concentrations of 90Sr in the samples were determined by comparing the intensities of the luminescence using a single crystal of KCl. The results showed that the determined 90Sr concentration has a positive correlation with the soil contamination levels in the South Ural region. Tooth samples from both inside of the Semipalatinsk nuclear test site and the villages nearby have detectable amounts of 90Sr, indicating the possible presence of residual soil contamination. The present study demonstrates that using imaging plates is a very sensitive method to detect 90Sr in teeth as well as to estimate low-level 90Sr contamination in soil.
使用对β射线敏感的成像板获取了取自前苏联污染地区哺乳动物牙齿样本中的 90Sr 图像。通过比较 KCl 单晶体的发光强度来确定样品中 90Sr 的平均浓度。结果表明，所测定的 90Sr 浓度与南乌拉尔地区的土壤污染水平呈正相关。来自塞米巴拉金斯克核试验场内部和附近村庄的牙齿样本中都检测到了可检测量的 90Sr，表明可能存在残留的土壤污染。本研究表明，使用成像板是一种非常敏感的方法，可以检测牙齿中的 90Sr，以及估计土壤中的低水平 90Sr 污染。
