期刊
MARINE ENVIRONMENTAL RESEARCH
卷 66, 期 3, 页码 378-393出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2008.06.001
关键词
metal load; estuarine sediments; sediment-trap material; acid sulphate soils; Vora River; Baltic Sea
资金
- Magnus Ehrnrooths Stiftelse
- Abo Akademi Forskningsinstitut
- Renlunds Stiftelse
The estuarine behaviour of the metal load leaching from acid sulphate (AS) soils was studied in a selected river system (the Vora River), in western Finland. Large amounts of metals were transported with the river and deposited within the estuary, causing highly elevated metal concentrations in both the sediment traps and in the underlying bottom sediments. Among the metals, there was a diverging deposition pattern where Al. Cu, La and U demonstrated a strong association with organic matter and were deposited within approximately 4 km from the river mouth. In contrast, the deposition of Co, Mn, Ni and Zn Occurred when pH reached circumneutral conditions further Out in the estuary. Yet other metals were not abundantly leached from the AS soils and thus not elevated in the river and estuary (Fe, Ti, Cr, V). Five separate chemical extractions indicated the geochemical speciation of the metals. (C) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据