渤海沉积物重金属含量时间演化特征及影响因素研究

发布时间：2018-05-28 03:20

本文选题：沉积物 + 重金属　；参考：《中国海洋大学学报(自然科学版)》2017年10期

【摘要】：近海沉积物重金属污染可导致一系列环境灾难,沉积物重金属污染问题也逐步成为海洋环境研究的热点之一。本文利用国家海洋局北海分局1978—2009年渤海污染监测数据,对铅(Pb)、铬(Cr)、铜(Cu)、砷(As)、镉(Cd)、汞(Hg)等重金属的时间演化特征进行了分析。并进一步分析了入海河流重金属排放年均浓度、环渤海经济发展水平对渤海沉积物重金属含量的影响与控制作用。结果表明:渤海沉积物各种重金属含量随时间的变化趋势基本一致,大致分为四个阶段。入海河流的重金属排放量是沉积物中重金属积累的重要来源,并且其在沉积物中的积累有一定的时间迟滞。GDP在经济快速发展初期与特定重金属排放量之间呈现一定的正相关关系。
[Abstract]:The pollution of heavy metals in offshore sediments can lead to a series of environmental disasters, and the pollution of heavy metals in sediments has gradually become one of the hot spots in marine environmental research. Based on the monitoring data of pollution in the Bohai Sea from 1978 to 2009, the temporal evolution characteristics of heavy metals, such as Pb, Cr, Cu, as, CD, Hg and Hg, are analyzed in this paper. The effects of the annual concentration of heavy metals discharged from rivers and the level of economic development around the Bohai Sea on the contents of heavy metals in sediments of Bohai Sea were also analyzed. The results show that the variation trend of heavy metals in Bohai sediments with time is basically the same, which can be divided into four stages. The discharge of heavy metals from rivers into the sea is an important source of heavy metal accumulation in sediments. And its accumulation in sediment has a certain time lag. GDP in the early stage of rapid economic development and specific heavy metal emissions show a certain positive correlation.
【作者单位】：国家海洋局北海环境监测中心海洋溢油鉴别与损害评估技术国家海洋局重点实验室;山东省海洋环境地质工程重点实验室中国海洋大学;青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室;
【基金】：国家自然科学基金项目(41372287) 青岛海洋科学与技术国家实验室开放基金项目(QNLM2016ORP0110)资助~~
【分类号】：X55

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