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胡金君,王慧娟,何正中,李娴雅,何贤文,管永精,阮向东,潘少明.广西北部湾河口及海湾沉积物中137Cs含量分析[J].广西科学,2017,24(4):371-375. [点击复制]
- HU Jinjun,WANG Huijuan,HE Zhengzhong,LI Xianya,HE Xianwen,GUAN Yongjing,RUAN Xiangdong,PAN Shaoming.137Cs Analysis in the Estuary and Coastal Sediment in Beibu Gulf[J].Guangxi Sciences,2017,24(4):371-375. [点击复制]
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| 广西北部湾河口及海湾沉积物中137Cs含量分析 |
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胡金君1, 王慧娟1, 何正中1, 李娴雅1, 何贤文2, 管永精1, 阮向东1, 潘少明3
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| (1.广西大学物理科学与工程技术学院, 广西南宁 530004;2.广西壮族自治区辐射环境监督管理站, 广西南宁 530222;3.南京大学地理与海洋科学学院, 江苏南京 210023) |
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| 摘要: |
| [目的]了解广西北部湾河口及海湾沉积物中137Cs的含量,为定量研究北部湾沿岸区域土壤侵蚀和堆积状况,以及评价防城港红沙核电站运行对周围环境的影响提供科学依据。[方法]在广西北部湾河口及海湾中采集32个沉积物样品,利用高纯锗γ谱仪测定样品中137Cs的含量,并与周边的背景值进行比较。[结果]在河口、海湾的表层样中,137Cs比活度较低,范围为0.10~5.94 Bq/kg,平均值约为1.23 Bq/kg。[结论]表层沉积物中,137Cs含量相对陆地含量要低,主要原因可能是沉积物样品中含沙量大,137Cs吸附量相对较少导致。同时,自然因素和人为活动对137Cs在河口及海湾沉积物中的再分配起重要作用。 |
| 关键词: 137Cs 沉积物 大气沉降 北部湾 |
| DOI：10.13656/j.cnki.gxkx.20170718.001 |
| 投稿时间：2017-05-12 |
| 基金项目:国家自然科学基金项目(41166002,11665006),广西自然科学基金项目(2012GXNSFFA060005,2016GXNSFAA380142)和广西教育厅科研项目(KY2016YB023)资助。 |
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| 137Cs Analysis in the Estuary and Coastal Sediment in Beibu Gulf |
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HU Jinjun1, WANG Huijuan1, HE Zhengzhong1, LI Xianya1, HE Xianwen2, GUAN Yongjing1, RUAN Xiangdong1, PAN Shaoming3
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| (1.School of Physical Science and Technology, Guangxi University, Nanning, Guangxi, 530004, China;2.Radiation-Environment Management and Monitoring Station of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530222, China;3.School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu, 210023, China) |
| Abstract: |
| [Objective] Discussing the distribution of 137Cs in the surface sediment of estuary and coastal can promote further quantitative research on soil erosion and accumulation along the coast of the Beibu Gulf as well as provide scientific evidence for the evaluation of the environmental impact of the Red Sand Plant.[Methods] 32 samples were collected in the surface sediment of estuary and coastal, and the specific activity of 137Cs were tested by HPGe spectrometer, and compared to the other kinds of samples.[Results] By comparing the values of 137Cs in different kinds of samples, it is suggested the specific activity of 137Cs in the sediment is in the range between 0.10 Bq/kg and 5.94 Bq/kg, and the mean value is 1.23 Bq/kg.[Conclusion] Specific activity of 137Cs in the sediment less than other land samples, it may affected by the ratio of powder sand in the sediment is larger than other land surface samples.The research on the specific activity of the sediments and the distribution of sampling sites suggested that natural factors and human activities played an important role in the redistribution of 137Cs in sediments. |
| Key words: 137Cs sediment atmospheric precipitation Beibu Gulf |
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