| 引用本文： |
-
雷富,陈宪云,陈默,许铭本,张荣灿,姜发军.广西茅尾海夏季海水和表层沉积物中重金属污染现状及评价[J].广西科学,2013,20(3):205-209. [点击复制]
- LEI Fu,CHEN Xian-yun,CHEN Mo,XU Ming-ben,ZHANG Rong-can,JIANG Fa-jun.Pollution Evaluation of Heavy Metals in the Sea Water and Surface Sediments of Maowei Sea in Summer[J].Guangxi Sciences,2013,20(3):205-209. [点击复制]
|
|
| |
|
|
| 本文已被：浏览 490次 下载 421次 |
码上扫一扫！ |
| 广西茅尾海夏季海水和表层沉积物中重金属污染现状及评价 |
|
雷富, 陈宪云, 陈默, 许铭本, 张荣灿, 姜发军
|
|
|
| (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) |
|
| 摘要: |
| 根据2011年6月的调查数据对广西茅尾海海水和表层沉积物中的重金属(Cu、Pb、Zn、Cd、Hg、As)进行研究,采用单因子指数法和Häkanson生态风险指数法对表层沉积物重金属污染特征及潜在生态风险性进行分析和评价。结果表明:茅尾海海域海水中Cu、Pb、Zn、Cd、Hg、As的含量(μg/L)范围分别为1.3~3.2、0~10.0、6.8~29.2、0.06~0.31、0~0.138、0.37~1.00,平均浓度(μg/L)分别为2.1、2.7、14.6、0.14、0.067、0.59,其中,海水中的Pb和Hg平均含量超过国家一类海水水质标准,各种重金属单因子污染程度依次为Pb > Hg > Zn > Cu > Cd > As。表层沉积物中的Cu、Pb、Zn、Cd、Hg、As的含量(μg/L)变化范围分别为(0~45.3)×10-6、(0.4~23.5)×10-6、(1.1~80.4)×10-6、(0.01~0.50)×10-6、(0.01~0.11)×10-6、(2.30~25.65)×10-6,平均含量(μg/L)分别为9.0×10-6、13.1×10-6、31.5×10-6、0.13×10-6、0.04×10-6、9.48×10-6。该海域重金属综合污染程度和潜在生态风险性均较低,重金属元素污染程度As > Cu=Cd > Pb > Hg=Zn,重金属元素对海洋生态系统潜在危害的影响程度Hg > Cd > As > Cu > Pb > Zn,沉积物中主要潜在生态风险因子为Hg、Cd和As。 |
| 关键词: 污染评价 海水 沉积物 重金属 茅尾海 |
| DOI： |
| 投稿时间：2013-01-07修订日期：2013-02-10 |
| 基金项目:广西自然科学基金北部湾重大专项项目(2010GXNSFE013001)资助。 |
|
| Pollution Evaluation of Heavy Metals in the Sea Water and Surface Sediments of Maowei Sea in Summer |
|
LEI Fu, CHEN Xian-yun, CHEN Mo, XU Ming-ben, ZHANG Rong-can, JIANG Fa-jun
|
| (Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China) |
| Abstract: |
| According to the survey data in June 2011, heavy metals(copper, lead, zinc, arsenic, cadmium, and mercury)in seawater and surface sediments were studied in Guangxi Maowei Sea.The results showed that the contents of Cu, Pb, Zn, Cd, Hg and As in surface seawater ranged 1.3~3.2, 0~10.0, 6.8~29.2, 0.06~0.31, 0~0.138 and 0.37~1.00μg/L, and averaged 2.1, 2.7, 14.6, 0.14, 0.067 and 0.59μg/L, respectively.The concentrations of Pb and Hg exceeded the standard of first grade seawater quality of China.The order of single factor index is Pb > Hg > Zn > Cu > Cd > As.The contents of Cu, Pb, Zn, Cd, Hg, and As in surface sediments ranged (0~45.3)×10-6, (0.4~23.5)×10-6, (1.1~80.4)×10-6, (0.01~0.50)×10-6, (0.01~0.11)×10-6 and (2.30~25.65)×10-6, and averaged 9.0×10-6, 13.1×10-6, 31.5×10-6, 0.13×10-6, 0.04×10-6 and 9.48×10-6, respectively.The pollution status and the potential ecological risk of the heavy metals of surface sediments in Maowei Sea were studied by using the index technique of single factor and Hkanson ecological risk index.The result showed that the integrated contamination level of the heavy metals and the potential ecological risk of the heavy metal were low in the sediments of Maowei Sea.The order of the pollution degree was As > Cu=Cd > Pb > Hg=Zn while the order of the potential ecological risk was Hg > Cd > As > Cu > Pb > Zn, The Hg, Cd and As are key factors of the potential ecological risk in surface sediments in Maowei Sea. |
| Key words: pollution evaluation seawater sediments heavy metal Maowei Sea |
|
|
|
|
|
