Univ Toulon, Aix Marseille Univ., CNRS/INSU, IRD, MIO UM 110, Mediterranean Institute of Oceanography, La Garde, France; CNRS, National Centre for Marine Sciences, P.O. Box 534, Batroun, Lebanon.
Lebanese University Faculty of Sciences III, Tripoli, Lebanon.
Mar Pollut Bull. 2020 Jun;155:111066. doi: 10.1016/j.marpolbul.2020.111066. Epub 2020 May 3.
St Georges Bay of Lebanon's coast is an open bay to the Mediterranean Sea. It is exposed to numerous anthropogenic activities such as industrial effluent, untreated wastewater discharge and maritime activities resulting in increasing chemical contamination, especially with trace metals. Contamination with trace metals (Cu, Cd, Co, Pb, As, Ag and Hg) and the influence of early diagenesis on their distribution were studied on both sediments and waters. For this purpose, sediment cores were collected, then treated under inert atmosphere to retrieve pore waters and solid fraction. The area appears to be seriously impacted by the materials transported by the Beirut River and/or by direct inputs, and recent land reclamation using dumpsite material. The sediments showed a significant level of contamination. Element mobility was studied by selective extraction on sediments. The mobility of trace elements from solid fraction to pore waters is controlled by the Fe/Mn cycle and organic matter.
黎巴嫩圣乔治湾海岸是一个向地中海敞开的海湾。它受到许多人为活动的影响，如工业废水、未经处理的污水排放和海上活动，导致化学污染不断增加，特别是痕量金属污染。本研究调查了沉积物和水体中痕量金属（Cu、Cd、Co、Pb、As、Ag 和 Hg）的污染情况及其对其分布的早期成岩作用的影响。为此，采集了沉积物岩芯，然后在惰性气氛下处理，以回收孔隙水和固体部分。该地区似乎受到贝鲁特河输送的物质和/或直接输入以及最近使用垃圾场材料进行土地开垦的严重影响。沉积物显示出显著的污染水平。通过对沉积物进行选择性提取研究了元素的迁移性。痕量元素从固相到孔隙水的迁移性受 Fe/Mn 循环和有机质的控制。
