海洋地质前沿2025，Vol.41Issue(7)：32-42,11.DOI:10.16028/j.1009-2722.2024.010
威海湾柱状沉积物重金属含量特征、污染风险评估及来源探讨
Heavy metal content,source,and pollution risk assessment in core sediments of Weihai Bay
摘要
Abstract
The vertical distribution characteristics of As,Cd,Cr,Cu,Pb,Zn and Hg in the core sediments of Wei-hai Bay were analyzed based on the results of AMS14 C dating,particle sizes,and heavy metal content of WHW-06 core sediment samples in Weihai Bay.Enrichment factor(EF),geoaccumulation index(Igeo),and potential eco-logical risk index(RI)were used to assess the risk of heavy metal pollution.Combined with correlation analysis and principal component analysis,the sources of the heavy metals were discussed.Results show that from bottom to top or the core section,the content of As,Cd,and Hg showed an overall upward trend,and the contents of Cr,Cu,Pb,and Zn increased first and then decreased,which is consistent with the variation trend of the average particle size.EF evaluation showed that As and Hg were slightly enriched at some depths.Index Igeo revealed slight Hg pollution in the core,and occasional As and Cd pollution at some depths.Index RI indicated a medium risk level of heavy metal pollution in mainly the upper part of the core.In addition,correlation analysis and prin-cipal component analysis presented that Cd,Cr,Cu,Pb,and Zn were mainly from the natural sources,and the changes in As and Hg contents may be affected by human activities.After data normalization,the heavy metal contents displayed a rapid upward trend in the past 200 years,which may be related to the pollutants from human activities since the industrial revolution.关键词
威海湾/重金属含量/柱状沉积物/污染风险评估/污染来源Key words
Weihai Bay/heavy metal content/core sediments/pollution risk assessment/pollution source分类
海洋科学引用本文复制引用
尉浩然,王占金,孙菲菲,尹砚军,朱龙海,胡日军..威海湾柱状沉积物重金属含量特征、污染风险评估及来源探讨[J].海洋地质前沿,2025,41(7):32-42,11.基金项目
国家自然科学基金(41776059) （41776059）
