| Crustaceous lichens sensitive monitor of caesium-137 radiation level in terrestrial environment |
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| 作者姓名： | 杜春光 赵烨 张京 徐翠华 |
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| 作者单位： | [1]Department of Geography, Beijing Normal University, Beijing 100875, China [2]National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China |
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| 基金项目： | Acknowledgments This work was supported by the community commonweal fund in 2000, the Ministry of Science and Technology （2000DIB40144）. We are also grateful to Prof. Fang Xiuqi for his helpful direction. |
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| 摘 要： | The activity of caesium-137 （Bq/kg） in the crustaceous lichens and other samples was determined to prove the feasibility that crustaceous lichens work as a sensitive biology monitor to record the caesium-137 （Bq/kg） radiation levels of terrestrial environment. The measurements were performed with GEM series HPGe （ high-purity Germanium） coaxial detector system （ADCAM -100 ） made by EC ＆ GORTEC Company in USA. 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 throe orders of magnitude higher than those found in the familiar biological samples. These results proved that crustaceous lichens may be one of the most sensitive biological monitors about the remote transmission and environmental radiation levels of caesium-137.
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| 关 键 词： | 地衣 铯 放射性 陆地环境 环境监测 |
| 收稿时间： | 2005-02-20 |
Crustaceous lichens sensitive monitor of caesium-137 radiation level in terrestrial environment |
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| Du Chunguang Zhao Ye Zhang Jing Xu Cuihua.Crustaceous lichens sensitive monitor of caesium-137 radiation level in terrestrial environment[J].Chinese Journal of Polar Science,2005,16(1):51-54. |
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| Authors: | Du Chunguang Zhao Ye Zhang Jing Xu Cuihua |
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| Institution: | Du Chunguang Zhao Ye Zhang Jing Xu Cuihua
1 Department of Geography,Beijing Normal University,Beijing 100875,China,
2 National Institute for Radiological Protection,Chinese Center for Disease Control and Prevention,Beijing 100088,China |
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| Abstract: | The activity of caesium-137(Bq/kg)in the crustaceous lichens and other samples was determined to prove the feasibility that crustaceous lichens work as a sen- sitive biology monitor to record the caesium-137(Bq/kg)radiation levels of terrestri- al environment.The measurements were performed with GEM series HPGe(high-pu- rity Germanium)coaxial detector system(ADCAM-100)made by EC & GORTEC Company in USA.It was found that the activity of caesium-137(Bq/kg)in the cru- staceous 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 the familiar biologi- cal samples.These results proved that crustaceous lichens may be one of the most sensitive biolog-ical monitors about the remote transmission and environmental radia- tion levels of caesium-137. |
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| Keywords: | Crustaceous Lichens Sensitive Monitor Activity of Caesium-137 |
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