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谢谊,张腾,雷富,胡宝清,徐轶肖.涠洲岛西面及西南面沉积物重金属污染分析[J].广西科学,2018,25(1):57-62,67. [点击复制]
- XIE Yi,ZHANG Teng,LEI Fu,HU Baoqing,XU Yixiao.Analysis of Heavy Metal Pollution in Sediments on the West and Southwest of Weizhou Island[J].Guangxi Sciences,2018,25(1):57-62,67. [点击复制]
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| 涠洲岛西面及西南面沉积物重金属污染分析 |
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谢谊1, 张腾1, 雷富2, 胡宝清1, 徐轶肖1
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| (1.广西师范学院, 北部湾环境演变与资源利用教育部重点实验室, 广西地表过程与智能模拟重点实验室, 广西南宁 530001;2.广西科学院广西近海海洋环境科学重点实验室, 广西南宁 530007) |
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| 摘要: |
| [目的]研究广西涠洲岛海域沉积物污染情况并进行分析与评价。[方法]通过分析2014年涠洲岛沉积物重金属元素Cu、Pb、Zn、Cd、Cr含量水平,运用单因子评价法、潜在生态风险指数法和地累积指数法进行污染程度评价。[结果]涠洲岛西面及西南面海域沉积物重金属含量均值从小到大依次为Cd < Cu < Pb < Cr < Zn,分别对应未检出、3.02 mg·kg-1、3.19 mg·kg-1、6.47 mg·kg-1、10.10 mg·kg-1,含量范围分别为未检出、0.95~8.29 mg·kg-1、2.68~4.07 mg·kg-1、1.81~18.46 mg·kg-1、ND~34.59 mg·kg-1。重金属污染程度属于"低水平",单个及多种重金属生态风险分级均为"轻微",其中Cu是引发生态风险的主要元素,地累积指数亦表明该海域各重金属污染程度均为0级。[结论]总体来说,涠洲岛西面及西南面海域沉积物重金属含量与污染程度较广西沿海其他海域低,仍属清洁水平。 |
| 关键词: 重金属 沉积物 涠洲岛 污染评价 |
| DOI：10.13656/j.cnki.gxkx.20180207.001 |
| 投稿时间：2017-12-26 |
| 基金项目:国家自然科学基金项目(41506137),广西自然科学基金项目(2015GXNSFCA139003,2016GXNSFBA380037),广西近海海洋环境科学重点实验室开放课题(GXKLHY14-02)和北部湾环境演变与资源利用教育部重点实验室系统基金项目(2014BGERLXT01)资助 |
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| Analysis of Heavy Metal Pollution in Sediments on the West and Southwest of Weizhou Island |
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XIE Yi1, ZHANG Teng1, LEI Fu2, HU Baoqing1, XU Yixiao1
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| (1.Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education, China, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation, Guangxi Teachers Education University, Nanning, Guangxi, 530001, China;2.Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China) |
| Abstract: |
| [Objective] This research focuses on the analysis and assessment of sediment pollution in Weizhou Island of Guangxi.[Methods] By analyzing the content of heavy metal elements Cu, Pb, Zn, Cd and Cr in the sediments of Weizhou Island in 2014, the pollution degree was evaluated by single factor evaluation method, potential ecological risk index method and ground accumulation index method.[Results] The average values of heavy metals in the sediments of west and southwest of Weizhou Island were Cd < Cu < Pb < Cr < Zn, respectively, which were not detected, 3.02 mg·kg-1, 3.19 mg·kg-1 and 1.46 mg·kg-1, 10.10 mg·kg-1, respectively.The range of contents was undetectable, 0.95-8.29 mg·kg-1, 66.8-4.07 mg·kg-1, 1.81-18.46 mg·kg-1, ND-34.59 mg·kg-1.The degree of heavy metal pollution was "low", and the ecological risk classification of single and multiple heavy metals was "slight".Among them, Cu was the main element inducing ecological risk and the ground accumulation index also exhibited the pollution degree of the heavy metals in this sea area was zero.[Conclusion] On the whole, the content of heavy metal elements in the sediments in the west and southwest of Weizhou Island is lower than other Guangxi coastal area.The sediment in this region is safe and clean to marine organism in terms of heavy metals. |
| Key words: heavy metal sediment Weizhou Island pollution assessment |
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