摘要
根据2003~2004年对柘林湾表层沉积物重金属调查资料,采用富集系数法和Hakanson潜在生态风险指数法对其富集特征和潜在生态风险进行了分析与评价。结果表明：柘林表层沉积物各重金属元素的富集顺序为Hg〉Cu〉Pb〉Cd〉As〉Zn〉C r,其中Hg,Cu,Pb的富集系数大于1;以潜在生态风险指数评价,柘林湾表层沉积物重金属潜在生态风险总体上处于低水平,从空间上看,只有S1达到中等强度。就各重金属元素而言,Hg是柘林湾的主要污染元素,决定了海湾重金属综合生态风险水平及其空间差异分布格局。
Based on the monitoring data of heavy metals in the surface sediments of Zhelin Bay from 2003 to 2004,accumulating degree and the potential ecological risk of heavy metals were analyzed and assessed using the method of accumulating coefficients and potential ecological risk indices.The results showed that the sequence of accumulating coefficient of eight heavy metals in surface sediments of Zhelin Bay are follows HgCuPbCdAsZnCr,and only Hg,Cu,Pb are higher than 1.The results of assessment of potential ecological risk showed that the degree of potential ecological risk of heavy metals in surface sediment of Zhelin Bay appears a low level,from space,only at station S1 was the median degree.As for the pollution of each heavy metal,Hg is one of essential element,and whose pollution degree showed the ecological risk level and their spatial difference in Zhelin Bay.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2010年第3期324-327,共4页
Marine Environmental Science
基金
国家自科学基金(40873065)
广东省重大科技兴海资助项目(A200005F20)
广东省自然科学基金(021260)
关键词
柘林湾
表层沉积物
重金属富集
潜在生态风险评价
Zhelin Bay
surface sediments
heavy metal accumulating
potential ecological risk assessment
