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许泽钺,刘鳗卿,何贤文,周花珑,黄美琴,管永精,何华,刘志勇,郭凯行,卢颖,何佶蔓,韦湫阳.北部湾表层沉积物中重金属与放射性元素/核素的分布、风险、源解析与环境研究启示[J].广西科学,2024,31(3):565-580. [点击复制]
- XU Zeyue,LIU Manqing,HE Xianwen,ZHOU Hualong,HUANG Meiqin,GUAN Yongjing,HE Hua,LIU Zhiyong,GUO Kaixing,LU Ying,HE Jiman,WEI Qiuyang.Distribution,Risk,Source Apportionment,and Implications for Environmental Research of Heavy Metals and Radioactive Elements/Nuclides in the Surface Sediments ofthe Beibu Gulf[J].Guangxi Sciences,2024,31(3):565-580. [点击复制]
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| 北部湾表层沉积物中重金属与放射性元素/核素的分布、风险、源解析与环境研究启示 |
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许泽钺1, 刘鳗卿1, 何贤文1, 周花珑1, 黄美琴1, 管永精2, 何华2, 刘志勇3, 郭凯行1, 卢颖1, 何佶蔓1, 韦湫阳1
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| (1.广西壮族自治区辐射环境监督管理站, 广西 南宁 530222;2.广西大学物理科学与工程技术学院, 广西相对论天体物理重点实验室, 广西 南宁 530004;3.苏州大学放射医学及交叉学科研究院, 放射医学与辐射防护国家重点实验室, 江苏 苏州 215123) |
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| 摘要: |
| 本研究对北部湾表层沉积物中的重金属(Hg、Cr、Zn、As、Cd、Ni、Cu、Pb)和放射性核素(238U、232Th、210Pb、239+240Pu)进行全面分析,以评估其环境风险并考察其作为环境指示物的有效性。结果表明，除了局部地区的Cr浓度超出《海洋沉积物质量》(GB 18668-2002)中的第一类指标外，其他重金属浓度均低于第一类指标。放射性核素的环境风险评估显示238U和232Th属于第二级(安全级别),而210Pb和239+240Pu尚缺乏评估标准。研究发现部分重金属和放射性元素/核素呈现出“T”型分布,指向多样化的污染源和传输机制。结果显示放射性元素/核素在海洋环境监测和管理中具有独特的源相示踪潜力，海洋放射性研究可作为交叉学科为海洋环境保护和污染综合治理研究提供新的启示。 |
| 关键词: 北部湾 表层沉积物 重金属 放射性核素 环境风险评估 空间分布 环境研究启示 |
| DOI：10.13656/j.cnki.gxkx.20240910.017 |
| 投稿时间：2024-02-27修订日期：2024-04-20 |
| 基金项目:广西自然科学基金项目(2021GXNSFBA196001)资助 |
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| Distribution,Risk,Source Apportionment,and Implications for Environmental Research of Heavy Metals and Radioactive Elements/Nuclides in the Surface Sediments ofthe Beibu Gulf |
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XU Zeyue1, LIU Manqing1, HE Xianwen1, ZHOU Hualong1, HUANG Meiqin1, GUAN Yongjing2, HE Hua2, LIU Zhiyong3, GUO Kaixing1, LU Ying1, HE Jiman1, WEI Qiuyang1
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| (1.Radiation Environment Management and Monitoring Station of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530222, China;2.School of Physical Science and Technology, Guangxi Key Laboratoryfor Relativistic Astrophysics, Guangxi University, Nanning, Guangxi, 530004, China;3.Schoolfor RadiologicalandInterdisciplinary Sciences(RAD-X), State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, Jiangsu, 215123, China) |
| Abstract: |
| This study comprehensively analyzed heavy metals (Hg,Cr,Zn,As,Cd,Ni,Cu and Pb) and radioactive nuclides (238U,232Th,210Pb and 239+240Pu) in the surface sediments of the Beibu Gulf of China,aiming to assess their environmental risks and investigate their effectiveness as environmental indicators.The results showed that except for the Cr concentration in some areas exceeding the standard of the first category of indicators in the Marine Sediment Quality (GB 18668-2002),the concentrations of other heavy metals were lower than the standards of indicators in the first category.The environmental risk assessment of radioactive nuclides showed that 238U and 232Th belonged to the second level (safety level),while 210Pb and 239+240Pu still lacked assessment criteria.Some heavy metals and radioactive elements nuclides showed a “T” type distribution,which implied a variety of pollution sources and transmission mechanisms.The results show the unique source phase tracing potential of radioactive elements/nuclides in marine environmental monitoring and management.Moreover,the results reveal that the research on marine radioactivity as an interdisciplinary subject can give new insights into the research on protection and comprehensive pollution control of the marine environment. |
| Key words: Beibu Gulf surface sediments heavy metals radioactive nuclides environmental risk assessment spatial distribution implication for environmental research |
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