...
  • 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 >A review of sediment contamination by trace metals in the Humber catchment and estuary, and the implications for future estuary water quality
【24h】

A review of sediment contamination by trace metals in the Humber catchment and estuary, and the implications for future estuary water quality

机译：回顾了亨伯河口和河口中的微量金属对沉积物的污染及其对未来河口水质的影响

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

This paper reviews what is presently known about sediment contamination in the macro-tidal Humber estuary on the east coast of the UK, with particular reference to the trace elements arsenic, copper, lead and zinc. The Humber is a post-industrial estuary, with an industrial and mining legacy of contaminated sediments throughout the river catchment. Surface and near-surface sediments in the estuary also show significant contamination of trace metals over background values. Inputs of dissolved and paniculate trace elements to the estuary from the rivers are reviewed, and atmospheric deposition to the catchment and estuary calculated as a potential additional source of contamination. The necessity of maintaining the sediment balance within the estuary means that contaminated sediments dredged from the estuary harbours are deposited to other sites within the estuary, rather than being removed. Trace metal concentrations in recent dredged sediments, and sediments from the period of peak contamination in the 1970s, are compared with background values. Current inputs to the estuary from point sources, and trends over the last decade are considered. Our calculation of the current depositional fluxes of trace metals to the estuary intertidal sediments, and comparison with the inputs, reveals that the estuary sediments are today capable of storing 55-97% of the input load of As, 15-27% of the Cu, 17-50% of the Pb and 11-12% of the Zn annually. Sediment quality in the estuary is currently far from its 'background' state with respect to trace metals. This has implications for the future water and sediment quality of the Humber under the terms of the EU Water Framework Directive. One management option being considered to improve sea defences in the estuary, managed realignment, may also act to dilute contaminated sediments in the estuary, and thereby to improve future water quality. We look at the effect on sediment contaminant storage of three possible future managed realignment scenarios.
机译：本文回顾了英国东海岸大潮洪伯河口沉积物污染的最新知识，特别是砷，铜，铅和锌等微量元素。亨伯河（Humber）是一个后工业河口，在整个流域都具有工业和采矿业，污染了沉积物。河口的表层和近表层沉积物也显示出痕量金属超过背景值的显着污染。审查了从河流向河口的溶解和颗粒状痕量元素的输入，并计算了流向集水区和河口的大气沉积物，将其作为潜在的额外污染源。维持河口内沉积物平衡的必要性意味着，从河口港口挖出的受污染的沉积物会沉积到河口内的其他地点，而不是被清除。将最近疏dr的沉积物中的痕量金属浓度以及1970年代污染高峰时期的沉积物与本底值进行比较。考虑了来自点源的当前河口输入以及过去十年的趋势。我们对当前痕量金属到河口潮间带沉积物的沉积通量的计算以及与输入的比较表明，当今河口沉积物能够存储55-97％的砷，铜的15-27％的输入负荷，每年的铅含量为17-50％，锌的含量为11-12％。目前，相对于痕量金属，河口的沉积物质量还远未达到其“本底”状态。根据欧盟水框架指令的规定，这对亨伯河市未来的水和沉积物质量具有影响。正在考虑采用一种管理方案来改善河口的防海能力，进行有管理的调整，还可以起到稀释河口中受污染的沉积物的作用，从而改善未来的水质。我们考察了三种可能的未来管理调整方案对沉积物污染物存储的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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