Marine Chemistry and Geochemistry Research Center, Korea Institute of Ocean Science and Technology, Ansan 15627, Republic of Korea.
Agency for Defense Development, Daejeon 34188, Republic of Korea.
Mar Pollut Bull. 2017 Nov 15;124(1):512-520. doi: 10.1016/j.marpolbul.2017.07.032. Epub 2017 Jul 18.
In 2014, the concentrations of 13 heavy metals in surface sediments from 14 sampling stations were analyzed and compared to samples from previous years to evaluate the remediation effectiveness of the "rest-year" (RY) system and capping with dredged material at the Yellow Sea-Byung dumping site offshore Korea. Since the 2006 introduction of the RY system, annual variations in metal concentrations at stations within the RY zone have gradually decreased over time. Heavy metal concentrations at most stations were lower than sediment quality guidelines, indicating the success of the RY system. Additionally, the effects of capping the contaminated sediment with dredged materials were investigated. The results indicate that dredged materials successfully capped the contaminated sediment within the dredged material dumping area, as the concentrations of Cr and total organic carbon were significantly reduced. We conclude that dredged materials may be used as capping materials for the remediation of contaminated sediments.
2014 年，分析了来自 14 个采样站的表层沉积物中 13 种重金属的浓度，并与往年的样本进行了比较，以评估韩国黄海永宗岛倾倒区“休渔年”（RY）系统和疏浚物覆盖的修复效果。自 2006 年引入 RY 系统以来，RY 区内各站点金属浓度的年际变化随时间逐渐减少。大多数站点的重金属浓度均低于沉积物质量标准，表明 RY 系统取得了成功。此外，还研究了用疏浚物覆盖污染沉积物的效果。结果表明，疏浚物成功地覆盖了疏浚物倾倒区的污染沉积物，Cr 和总有机碳的浓度显著降低。我们得出结论，疏浚物可用作污染沉积物修复的覆盖材料。
