| 本文已被：浏览 12次 下载 0次 |
|
| 北部湾表层沉积物中的重金属与放射性核素：分布、风险、源解析与环境研究启示 |
|
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3,3, 郭凯行1, 卢 颖1, 何佶蔓1, 韦湫阳1
|
|
|
| (1.广西壮族自治区辐射环境监督管理站;2.广西大学物理科学与技术学院;3.苏州大学辐射与跨学科科学学院) |
|
| 摘要: |
| 本研究对中国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）进行了全面分析，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浓度超出第一类标准外，其它重金属均低于第一类标准。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。研究还发现重金属和放射性核素呈现出“T”型空间分布，指向多样化的污染源和传输机制。研究结果指示了在北部湾海域可持续发展、海洋环境监测和管理中，利用这些污染物作为指示物的重要性，并对海洋环境保护和污染治理提供科学依据。 |
| 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, 环境启示 |
| DOI： |
| 投稿时间：2024-02-27修订日期：2024-04-20 |
| 基金项目:The Guangxi Natural Science Foundation (2021GXNSFBA196001)；广西自然科学(2021GXNSFBA196001)。[第一 |
|
| Heavy Metals and Radioactive Nuclides in the Surface Sediments of the Beibu Gulf: Distribution, Risk, Source Apportionment, and Implications for Environmental Research |
|
Xu Zeyue1, Liu Manqing1, He Xianwen1, Zhou Hualong1, Huang Meiqin1, Guan Yongjing2, He Hua2, Liu Zhiyong3, Guo kaixing1, Lu yin1, He jiman1, Wei qiuyang1
|
| (1.Radiation Environment Management and Monitoring Station of Guangxi Zhuang Autonomous Region;2.Guangxi Key Laboratory for Relativistic Astrophysics,School of Physical Science and Technology,Guangxi University;3.State Key Laboratory of Radiation Medicine and Protection,School for Radiological and Interdisciplinary Sciences RAD-X and Collaborative Innovation Centre of Radiation Medicine of Jiangsu Higher Education Institutions,Soochow University) |
| Abstract: |
| In this study, heavy metals ( Hg, Cr, Zn, As, Cd, Ni, Cu, Pb ) and radionuclides ( 238U, 232Th, 210Pb, 239+240Pu ) in the surface sediments of the Beibu Gulf of China were comprehensively analyzed 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 first category standard, the other heavy metals were lower than the first category standard. The environmental risk assessment of radionuclides shows that 238U and 232Th belong to the second level ( safety level ), while 210Pb and 239+240Pu still lack assessment criteria. The study also found that heavy metals and radionuclides showed a ' T ' spatial distribution, pointing to a variety of pollution sources and transmission mechanisms. The results indicate the importance of using these pollutants as indicators for sustainable development, marine environmental monitoring and management in the Beibu Gulf, and provide a scientific basis for marine environmental protection and pollution control. |
| Key words: Beibu Gulf, Surface Sediments, Heavy Metals, Radioactive Nuclides, Environmental Risk Assessment, Spatial Distribution, Environmental Enlightenment |
