...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Historical reconstruction of anthropogenic mercury input from sedimentary records: Yeongsan Estuary, South Korea
【24h】

Historical reconstruction of anthropogenic mercury input from sedimentary records: Yeongsan Estuary, South Korea

机译：来自沉积记录的人为汞输入的历史重建：韩国荣山河口

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The rapid economic growth of the Republic of Korea (S. Korea) within the last half-century has resulted in a pronounced increase in anthropogenic Hg emission from coal combustion, oil refining, cement production, and waste incineration. The record of increasing atmospheric sources have been investigated with a historical reconstruction of Hg accumulation in 30 sediment cores collected from the Yeongsan Estuary. Within the last several decades, this region has undergone severe anthropogenic alteration, including the construction of an estuarine dam forming the Yeongsan Lake, and installation of numerous seawalls that eliminated vast tidal flats and restricted estuarine circulation. Total mercury concentrations (T-Hg) measured in sediments deposited after 1980 (23.2 +/- 9.6 ng g(-1); n = 273), were significantly higher than those reported for pre-industrial sediments (i.e. background values: 8.6 +/- 2.7 ng n = 274). An extensive survey of surface samples show that T-Hg concentrations are highest above the darn, with a gradient to lower values further offshore. The concomitant timing of enrichment of T-Hg within the sedimentary record and increased National emissions in Korea suggests that regional sources dominate the input to the Yeongsan Estuary. This indicates that with sufficient regional historic emission data, T-Hg might be utilized as a geochronologic tool to aid in corroborating traditional radioisotopic methods. (c) 2015 Elsevier Ltd. All rights reserved.
机译：大韩民国（大韩民国）在过去半个世纪中的快速经济增长导致了煤炭燃烧，炼油，水泥生产和垃圾焚烧产生的人为汞排放显着增加。通过对从荣山河口收集的30个沉积物芯中的汞积累进行历史重建，对增加的大气源进行了调查。在过去的几十年中，该地区发生了严重的人为变化，包括修建了形成龙山湖的河口大坝，并安装了许多海堤，消除了大面积的潮滩并限制了河口的流通。 1980年以后沉积的沉积物中测得的总汞浓度（T-Hg）（23.2 +/- 9.6 ng g（-1）； n = 273），显着高于工业化前沉积物的报告浓度（即背景值：8.6 + /-2.7 ng n = 274）。广泛的表面样本调查显示，T-Hg浓度在织补上方高于最高，而在离岸较远处有一个较低的浓度梯度。沉积记录中T-Hg富集的时间以及韩国国家排放量的增加表明，区域源主要控制着向荣山河口的输入。这表明，在有足够的区域历史排放数据的情况下，T-Hg可以用作年代学工具，以帮助确证传统的放射性同位素方法。 （c）2015 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号