Heavy metals in sinking particles and bottom sediments from the eastern Turkish coast of the Black Sea
Heavy metals in sinking particles and bottom sediments from the eastern Turkish coast of the Black Sea
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DOI：
10.1016/j.ecss.2008.01.006
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发表时间：
2008-06-20
影响因子：
2.8
通讯作者：
Kirbasoglu, C.
中科院分区：
文献类型：
--
作者：
Erguel, H. A.;Topcuoglu, S.;Kirbasoglu, C.
从黑海东土耳其海岸的一个监测站季节性采集沉积物捕集器和底泥样品，测定了Cd、Cu、Cr、Co、Ni、Zn、Fe、Mn、Pb、As和Sb的浓度。除夏季外，沉积物捕集器样品中Cd、Pb和Mn浓度最高，而Co、Ni、Zn和Fe含量远低于表层沉积物中相应水平。Cu、Cr、As、Sb含量随沉积物类型变化无明显趋势。总的来说，除Cr外，沉积物捕集器材料中的金属浓度在夏季相对较低。在秋季测得最大的质量通量为56.5 g m(-2) day（-1）。重金属通量最高的季节也出现在秋季，且与颗粒质量通量密切相关。基于这些结果，我们认为该地区颗粒重金属向下垂直输送与发生在该地区的高度土地侵蚀及其产生的颗粒通量动力学有关。值得注意的是，颗粒中Cd、Cu、Co、Zn、Fe和Sb的最高浓度是在冬季测得的，这一发现表明，在此期间，邻近城市和工业区的化石燃料燃烧加剧，对近岸水域下沉颗粒的金属成分起着重要作用。(C) 2008 Elsevier Ltd版权所有。
Concentrations of Cd, Cu, Cr, Co, Ni, Zn, Fe, Mn, Pb, As, and Sb were determined in sediment trap and bottom sediment samples collected seasonally from a station on the eastern Turkish coast of the Black Sea. Cd, Pb and Mn concentrations were highest in the sediment trap samples except during the summer period, whereas Co, Ni, Zn and Fe levels were much lower than corresponding levels found in the surface sediments. Cu, Cr, As and Sb levels showed no definite trend with sediment type. In general, with the exception of Cr, relatively lower metal concentrations in the sediment trap material were determined in the summer period. The highest mass flux, 56.5 g m(-2) day(-1), was measured during autumn. The highest flux of heavy metals also occurred during autumn and was strongly dependent on particle mass flux. Based on these results, we suggest that the downward vertical transport of particulate heavy metals in this region is related to the high degree of land erosion and the resultant particulate flux dynamics, which occur here. It was noteworthy that the highest concentrations of Cd, Cu, Co, Zn, Fe and Sb in particles were measured during winter a finding which suggests that enhanced fossil fuel combustion, which occurs during this period in adjacent urban and industrial areas plays an important role in the metal composition of sinking particles in nearshore waters. (C) 2008 Elsevier Ltd. All rights reserved.