Abstract：
It is crucial to establish appropriate background concentrations to discern heavy metal pollution in the marine environment. In this study, we analyzed heavy metals in deep-sea sediment cores to determine regional background concentrations at the East-Sea Byeong Ocean dumping site. The vertical profiles of heavy metals were categorized into three groups based on their contamination characteristics, and regional background levels for 12 metals were determined using pre-1900 averages. The enrichment factor, contamination factor, and pollution load index, calculated using regional background concentrations, indicated significant contamination by Cr, Co, Cu, Zn, Cd, Hg, and Pb during the ocean dumping period. These results differ from those obtained using global average concentrations. This underscores the importance of considering regional characteristics to minimize the risk of misinterpreting anthropogenic impacts. The approach based on local information is considered useful when sediment quality guidelines are absent or inapplicable.
摘要：
建立适当的背景浓度以识别海洋环境中的重金属污染至关重要。在这项研究中,我们分析了深海沉积物核心中的重金属，以确定东海Byeong海洋倾倒场的区域背景浓度。根据重金属的污染特征，将其垂直剖面分为三组，使用1900年前的平均值确定了12种金属的区域背景水平。富集因子，污染因子,和污染负荷指数，使用区域背景浓度计算，表明Cr严重污染，Co,Cu,Zn,Cd,Hg,和铅在海洋倾倒期间。这些结果与使用全球平均浓度获得的结果不同。这强调了考虑区域特征以最大程度地减少误解人为影响的风险的重要性。当缺乏或不适用沉积物质量指南时，基于本地信息的方法被认为是有用的。
