首页 | 期刊介绍 | 编委会 | 道德声明 | 投稿指南 | 常用下载 | 过刊浏览 | In English
引用本文:赵玉庭,孙珊,由丽萍,苏博,马元庆,王立明,齐延民,张昀昌.莱州湾沉积物粒度与重金属分布特征[J].海洋科学,2021,45(3):43-50.
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 45次   下载 30 本文二维码信息
码上扫一扫!
分享到: 微信 更多
莱州湾沉积物粒度与重金属分布特征
赵玉庭, 孙珊, 由丽萍, 苏博, 马元庆, 王立明, 齐延民, 张昀昌
山东省海洋资源与环境研究院山东省海洋生态修复重点实验室, 山东 烟台 264006
摘要:
作者依据2019年8月份莱州湾海洋沉积物调查资料,分析了该海域表层沉积物粒径组成、重金属时空分布特征并评价了其生态风险。结果显示,莱州湾沉积物分为砂质粉砂、粉砂、粉砂质砂和砂4种类型,以砂质粉砂为主,其次为粉砂与粉砂质砂,再次为砂,中值粒径平均58.956μm;表层沉积物中Cr、Zn、Pb、Cu、As、Cd、Hg和TOC平均含量分别为57.6、52.6、18.7、15.3、9.14、0.130、0.0234 mg/kg和0.222%;由于河流排海物质和莱州湾内潮流运动,导致Cu、Pb、Zn、As、Cr和Cd基本呈现中部海域含量较高,西部海域高于东部海域的特征,东南部海域Cd、Hg与矿产资源的开发相关;14.3%的站位综合潜在生态风险属于中生态风险,Cd对综合潜在生态风险指数的贡献率最高,为主要潜在生态风险因子;研究区域中重金属Cu、Zn含量的分布与沉积物粒径和有机碳的含量密切相关。
关键词:  莱州湾  沉积物  粒度  分布特征  重金属  生态风险评价
DOI:10.11759/hykx20200806004
分类号:X820.2
基金项目:国家重点研发计划资助项目(2018YFC1407601、2018YFC1407605);山东省重点研发计划资助项目(2019JZZY020705)
Distribution characteristics of grain size and heavy metals of sediments in Laizhou Bay
ZHAO Yu-ting, SUN Shan, YOU Li-ping, SU Bo, MA Yuan-qing, WANG Li-ming, QI Yan-min, ZHANG Yun-chang
Shandong Marine Resource and Environment Research Institute, Shandong Key Lab of Marine Ecological Restoration, Yantai 264006, China
Abstract:
Based on the geochemical properties of the sediments observed in Laizhou Bay in August, 2019, the temporal and spatial characteristics of granulometric distribution, heavy metals concentration, and organic carbon content in the surface sediments were analyzed. The results showed that the contents of silt and sand were higher than that of clay, and their median diameter was 58.956 μm; the average concentrations of Cr, Zn, Pb, Cu, As, Cd, and Hg were 57.6, 52.6, 18.7, 15.3, 9.14, 0.130, and 0.023 4 mg/kg, respectively, and the TOC was 0.222%. Due to the river discharge materials and tidal current movement in Laizhou Bay, the concentrations of Cu, Pb, Zn, Cr, and Cd in the central sea area were higher than those in the eastern sea area. Cd and Hg contents in the southeast sea area were related to the development of mineral resources. The potential ecological risk was moderate in 14.3% of the stations studied. Cadmium was determined as the principal ecological risk factor, and its contribution ratio was the highest among the seven studied elements. Pearson’s correlation analysis on the environmental factors revealed that sediment grain size and organic carbon content were important factors in the distribution of heavy metals such as copper and zinc.
Key words:  Laizhou Bay  sediment  grain size  granulometric distribution  heavy metals  ecological risk assessment
版权所有 《海洋科学》编辑部 Copyright©2008 All Rights Reserved
主管单位:中国科学院 主办单位:中国科学院海洋研究所
地址:青岛市南海路七号  邮编:266071  电话:0532-82898755  E-mail:marinesciences@qdio.ac.cn
技术支持:北京勤云科技发展有限公司