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| Research on Monitoring Caesium-137 Radiation Level of Land Environment by Crustaceous Lichens |
| DU Chun-guang1, ZHANG Jing2, LI Wen-hong2, et al |
| School of Geography, Beijing Normal University, Beijing, 100875, China |
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Abstract Objective The activity of caesium-137(Bq/kg) in the crustaceous lichens and other samples were determined to testify the feasibility,of which crustaceous lichens worked as a sensitive biology monitor to record the caesium-137(Bq/kg) radiation level of land environment.Methods The measurements were performed by GEM series HPGe (high-purity Germanium) coaxial detector system (ADCAM-100) made by EC&G ORTEC Company in USA.Results It was found that the activity of caesium-137(Bq/kg) in the crustaceous lichens was one order of magnitude higher than that found in surface soil,and was over three orders of magnitude higher than those found in corn,vegetable,fruit,eggs,milk and meat.Conclusion The crustaceous lichens grow in most places,their growth period is long,and they adsorb the nutrition from the atmosphere by their surface,which prove crustaceous lichens may be one of the most sensitive biological monitors of caesium-137 remote transmission and environmental radiation level.
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Received: 13 December 2004
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MENG Qing-hua, MA Yong-zhong, LI Hui-juan, LOU Yun, WAN Ling, ZHANG Hong, ZHAI Shu-guang, YU Jun, FENG Ze-chen, ZHU Wei-jie, WANG Hong-fang. Monitoring and Analysis of Radioactive Noble Gas 133Xe in Atmosphere in Beijing Region in 2016[J]. , 2017, 26(2): 190-192. |
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