Distribution and Contamination of Heavy Metals in the Surface Sediments of Ambarli Port Area (Istanbul, Turkey)
Distribution and Contamination of Heavy Metals in the Surface Sediments of Ambarli Port Area (Istanbul, Turkey)
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DOI：
10.5053/ekoloji.2014.901
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发表时间：
2014-03
期刊：
影响因子：
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通讯作者：
E. Sarı;S. Ünlü;R. Apak;N. Balci;B. Koldemir
中科院分区：
文献类型：
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作者：
E. Sarı;S. Ünlü;R. Apak;N. Balci;B. Koldemir
伊斯坦布尔的安巴尔利港在过去十年中为43.000多艘船舶提供服务，其表层沉积物的地球化学特征基本上是未知的。本文研究了沉积物中总碳酸盐和重金属的分布，并对沉积物中重金属的地球化学形态进行了分析，以确定其可能的来源。沉积物的金属污染水平进行了评估与援助的富集因子（EF）和地质累积指数（I geo）计算。表层沉积物中的污染程度产生了Igeo排序：Zn > Pb> Cr > Cu > As > Fe > Ni=Al >V，基本上没有显示出Al、As、Fe、Ni和V的污染。顺序选择性浸出试验证实，砷，铬和铁主要是在残留相中发现的，而铜，镍，铅，钒和锌主要与非残留相，可能表明后者的离子比那些继承自母体地质材料的潜在更高的流动性。基于统计方法，人为和自然地质因素控制的沉积物中的重金属变化。这项研究是在土耳其安巴尔利港区进行的首次此类研究。
The geochemical characteristics of the surface sediments of the Ambarli Port in Istanbul providing service for over 43.000 ships in the last decade are basically unknown. In this study, The distribution of total carbonate and metals in sediments was investigated and geochemical forms of the sediment-associated metals assessed to identify their possible sources. Metal contamination levels of sediments were evaluated with the aid of enrichment factor (EF) and index of geoaccumulation (I geo ) calculations. The degree of pollution in surface sediments yielded the Igeo ranking: Zn > Pb> Cr > Cu > As > Fe > Ni=Al >V, essentially not revealing pollution by Al, As, Fe, Ni and V. The highest Igeo and EF levels of Cr, Cu, Ni and Zn were found at the nearest station to Ambarli Port, indicating port activities as the source. Sequential selective leaching tests confirmed that As, Cr and Fe were mostly found in the residual phase, whereas Cu, Ni, Pb, V and Zn were mainly associated with the non-residual phase, possibly indicating the potentially higher mobility of the latter ions than those inherited from parent geological material. Based on statistical approaches, anthropogenic and natural geological factors were identified controlling the heavy metal variability in the sediments. This research is the first of its kind ever carried out in the Ambarli Port Area of Turkey.