摘要
为了解大亚湾2010-2018年表层沉积物中重金属铜(Cu)、铅(Pb)、锌(Zn)的时空分布特征及其潜在生态风险,该研究于2010、2012、2015和2018年在大亚湾海域采集表层沉积物并进行分析研究。结果表明,近十年来大亚湾表层沉积物中Cu、Pb、Zn的含量较稳定,未出现明显的增加,3种重金属的空间分布情况大致相同,高值区均集中于澳头至石化区一带的近岸海域。3种重金属间具有明显的同源性,沿岸工业企业排放以及澳头海域水产养殖等可能是近岸海域Cu、Pb和Zn的主要来源。沉积物中重金属污染程度为Zn>Cu>Pb,3种沉积物重金属的潜在生态风险为轻微程度。
In order to understand the tempo-spatial distribution characteristics and potential ecological risks of heavy metals(Cu,Pb,Zn)contents in the surface sediments of Daya Bay from 2010 to 2018,we collected and analyzed the surface sediments in Daya Bay in that period.The results show that the Cu,Pb and Zn contents in the surface sediments had been relatively stable in the past ten years without a significant increase.The spatial distribution of the three heavy metals was roughly the same with the high-value areas in the district from Aotou to the petrochemical area.The Cu,Pb and Zn presented a significant homology,mainly coming from coastal industrial enterprises and marine aquaculture in Aotou area.Their pollution degree showed a descending trend of Zn>Cu>Pb,and the overall potential ecological risk was slight.
作者
杨文超
黄道建
陈继鑫
陈晓燕
王宇珊
孙丽梅
YANG Wenchao;HUANG Daojian;CHEN Jixin;CHEN Xiaoyan;WANG Yushan;SUN Limei(South China Institute of Environmental Sciences,Ministry of Ecological Environment,Guangzhou 510655,China)
出处
《南方水产科学》
CAS
CSCD
北大核心
2020年第4期39-46,共8页
South China Fisheries Science
基金
广东省海洋渔业科技与产业发展专项“广东省海岸带生态补偿技术方法及可持续发展战略研究”(A201501D04)。
