Journal of Jianghan University(Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (5): 471-476.doi: 10.16389/j.cnki.cn42-1737/n.2015.05.018

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Pollution Evaluation of Heavy Metals in Sea Water and Surface Sediments in Maowei Sea

LI Suxia1，2，3，WEI Siqi4，LIN Junliang1，2，3，WANG Daobo1，2，3   

  1. 1. Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation，Qinzhou 535000，Guangxi，China；2. Key Laboratory of Exploitation and Protection of Beibu Gulf Marine Biological Resources，Qinzhou 535000，Guangxi，China；3. College of Resources and Enviroment of Qinzhou University，Qinzhou 535000，Guangxi，China；4. Anhui Haifeng Analysis Testing Technology Co.，Ltd.，Hefei 230000，Anhui，China
  • Online:2015-10-28 Published:2015-11-02

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Abstract: The author collected 12 seawater samples and the corresponding marine surface sediments samples from Maowei Sea. The heavy metals content such as Cu，Pb，Zn，Cd，Hg，As in seawater and surface sediments were determined. The index of single factor and geo-accumulation were used to assess heavy metals pollution. The results showed the average concentration of Cu，Pb，Zn，Cd，Hg，As were up to the second-class seawater quality standard and water puality standard for fisheries. But the average concentration of Cu，Pb，Zn，Hg were higher than the first-class seawater quality standard and Cu，Pb，Zn，Hg have exceeded the standard. The average pollution level of heavy metals were lower than 1 from the surface sediments，but the heavy metal Cu，Pb，Zn，Cd，As have exceeded the standard. The geoaccumulation index of Pb，Zn，As were smaller，and the geo-accumulation Index of Cu，Cd，Hg were larger. Pollution sites were found nearby Qin River and Tai Lam River estuary.

Key words: Maowei Sea, heavy metals, pollution assessment, sediments

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