温州北麂沉积物柱状样重金属污染评价及其来源解析  

Pollution characteristics and source analysis of heavy metals in a sediment core of Beiji island in Wenzhou

作　　者：陈星星[1,2,3] 陆荣茂 刘伟成[1,2,3] 周朝生 CHEN Xingxing;LU Rongmao;LIU Weicheng;ZHOU Chaosheng(Zhejiang Mariculture Research Institute,Wenzhou 325005,Zhejiang;Zhejiang Key Laboratory of Coastal Biological Germplasm Resources Conservation and Utilization,Wenzhou 325005,Zhejiang;Wenzhou Key Laboratory of Marine Biological Genetics and Breeding,Wenzhou 325005,Zhejiang)

机构地区：[1]浙江省海洋水产养殖研究所,浙江温州325005 [2]浙江省近岸水域生物资源开发与保护重点实验室,浙江温州325005 [3]温州市海洋生物遗传育种重点实验室,浙江温州325005

出　　处：《浙江农业科学》2024年第11期2758-2764,共7页Journal of Zhejiang Agricultural Sciences

基　　金：浙江省科技厅项目(LGN19C030001);温州市基础性公益科研项目(S2023042)。

摘　　要：于2022年12月,在温州北麂采集一根沉积物柱状样,分析了0~40 cm不同层次沉积物样品中铜(Cu)、铅(Pb)、镉(Cd)、锌(Zn)和铬(Cr)等5种重金属含量并计算富集因子指数(enrichment factors, EF,代表元素富集程度)。结果表明,多数重金属在次表层30 cm左右浓度和EF值都达到峰值或有一个高值区,这可能主要是由20世纪80—90年代北麂岛周边区域高强度人为排放的重金属导致的。进一步通过Pearson相关分析探讨了控制北麂岛海域沉积物重金属垂向分布的关键因素,结果发现,5种重金属的关键控制因素不同,Cu、Pb、Zn和Cr的输入主要受到人类活动的影响,而重金属Cd来源则与人为活动无关。In December 2022,a sediment core sample was obtained from the Beiji area of Wenzhou and analyzed for the presence of five heavy metals,namely copper(Cu),lead(Pb),cadmium(Cd),zinc(Zn)and chromium(Cr),across different sediment layers ranging from 0 to 40 cm.Enrichment factors(EF)were calculated to ascertain the extent of metal concentration in the samples.Results revealed that the concentrations and EF values of most heavy metals peaked or showed a high value area at around 30 cm in the subsurface layer.This observation can be attributed to the high-intensity anthropogenic emissions of heavy metals around Beiji Island during the 1980s and 1990s.Pearson correlation analysis was carried out to explore the factors that control the vertical distribution of heavy metals in sediments of Beiji Island.The results showed that the key controlling factors of the five heavy metals varied.The results found that the key controlling factors for the five heavy metals varied.The inputs of Cu,Pb,Zn,and Cr were mainly influenced by human activities,whereas the source of the heavy metal Cd was not related to anthropogenic activities.

关 键 词：重金属 温州北麂 沉积物柱 来源解析 

分 类 号：X55[环境科学与工程—环境工程]