Institute of Oceanography, Hellenic Centre of Marine Research, 46.7 km Athens-Sounio Ave, 19013, Anavyssos, Attiki, Greece.
Department of Physics, National Technical University of Athens, Zografou, 15780, Athens, Greece.
Environ Sci Pollut Res Int. 2018 Oct;25(30):30084-30100. doi: 10.1007/s11356-018-2984-0. Epub 2018 Aug 24.
Two sediment cores (coastal and offshore) and surface sediments were collected near an abandoned mine area in the marine environment of Oxygono Bay at Lavreotiki peninsula to investigate temporal and spatial variations among radionuclides and trace metals/major elements. Lavreotiki was and still is well known for the mining and metallurgical activities, which lasted from ancient times to nowadays (early 1980s). Gamma-ray and X-ray fluorescence measurements were held to determine the radionuclide and trace metal/major element concentrations, respectively. The sedimentation rate at Oxygono Bay coastal core was determined using the Pb and Cs tracers, while the enrichment factors were estimated to assess the anthropogenic influence due to metals in a spatial (surface sediments) and a temporal (coastal core sediments) basis. The mass flux at the coastal core was utilized to provide a baseline information at Lavreotiki peninsula. The trace metal/major element profiles were indeed associated with the mining activity in the area, revealing the mining history. The ERICA Tool was incorporated to estimate the dose rates due to natural and Cs radioactivity in the marine organisms and the values were found below the screening levels.
在拉夫罗提基半岛奥克西戈诺湾的海洋环境中，于一个废弃矿区附近采集了两个沉积岩芯（沿海和近海）和表层沉积物，以研究放射性核素和痕量金属/主要元素之间的时空变化。拉夫罗提基以其采矿和冶金活动而闻名，这些活动从古至今（20 世纪 80 年代初）一直持续。进行了伽马射线和 X 射线荧光测量，以分别确定放射性核素和痕量金属/主要元素的浓度。利用 Pb 和 Cs 示踪剂确定了奥克西戈诺湾沿海岩芯的沉积速率，同时还估算了富集因子，以评估金属在空间（表层沉积物）和时间（沿海岩芯沉积物）基础上的人为影响。沿海岩芯的质量通量用于提供拉夫罗提基半岛的基线信息。痕量金属/主要元素分布与该地区的采矿活动有关，揭示了采矿历史。还采用了 ERICA 工具来估计海洋生物中天然和 Cs 放射性产生的剂量率，发现这些值低于筛选水平。
