摘要
依据2004年的调查资料,分析了三沙湾海洋沉积物中重金属含量的分布,并采用潜在生态危害指数法对其生态危害程度进行了评价。结果表明,沉积物中除Hg和Cd污染较为严重外,其它重金属的生态危害很小。此外,本项目较全面地对三沙湾表层沉积物的微量元素进行了调查研究。
Distribution of the content of heavy metals in marine sediment in Sansha Bay was analyzed according to the investigation data in 2004, its ecological harm was evaluated with the index method of potential ecological harm. The result showed that the ecological harm of heavy metals was slightly, except the serious pollution of Hg and Cd. Investigation on microelement in surface sediment in Sansha Bay was conducted, too.
Comparison of these results with those from other sea area at home and abroad was made in this paper. The mean values of microelement Fe2O3, Ni and Mn in surface sediment from Sansha Bay were higher than that from continental shelf of northern south china sea, of which the major factor was that metal ores was eroded by rainstorm and variety of microelements was carried into marine surface sediment by river runoff.
In addition, Al2O3 had significant correlation with Fe2O3. The correlation between Al2O3 and Co, Al2O3 and Ni were also significant, showing distinctive geochemistry.
出处
《沉积学报》
CAS
CSCD
北大核心
2007年第3期456-460,共5页
Acta Sedimentologica Sinica
基金
福建省海洋与渔业局重点项目(200003)资助
关键词
表层沉积物
生态危害
三沙湾
重金属
微量元素
surface sediment, ecological harm, Sansha Bay, heavy metals, microelement
