School of Environment, Beijing Normal University, Beijing 100875, China.
MNR Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China.
Mar Pollut Bull. 2022 Feb;175:113400. doi: 10.1016/j.marpolbul.2022.113400. Epub 2022 Feb 4.
To investigate the long-term effects of urbanization and industrialization on coastal trace metal contamination, two sediment cores, Q21 (representing 1965-2018) and Q23 (representing 1986-2018), collected from the adjacent coasts of the east old town and west new area of Qingdao were analyzed. Although the concentrations of As, Cd, Co, Cr, Cu, Ni, Pb, Sc, and Zn were higher in Core Q21, the increasing trends in their concentrations and contamination levels were more obvious in Q23, especially since the 2000s. Moreover, the urbanization rates of the new area (1978-2017) were significantly positively correlated with the historical metal concentrations in Q23. Affected by the rapid socio-economic development in the new area, the combined excessive concentrations of the eight metals (excluding Sc) increased faster in Q23 (0.14-78.4 mg/kg) than Q21 (0.58-45.3 mg/kg). Overall, the sediment Core Q23 experienced higher trace metal contamination and ecological risks than Core Q21.
为了探究城市化和工业化对沿海痕量金属污染的长期影响，分析了取自青岛老城区东侧和新城区西侧相邻海岸的两个沉积物岩芯 Q21（代表 1965-2018 年）和 Q23（代表 1986-2018 年）。尽管 Core Q21 中的 As、Cd、Co、Cr、Cu、Ni、Pb、Sc 和 Zn 浓度较高，但 Q23 中这些金属浓度和污染水平的上升趋势更为明显，尤其是自 2000 年代以来。此外，新城区（1978-2017 年）的城市化率与 Q23 中历史金属浓度呈显著正相关。受新城区快速社会经济发展的影响，Q23 中这八种金属（不包括 Sc）的复合超标浓度（0.14-78.4mg/kg）上升速度快于 Q21（0.58-45.3mg/kg）。总体而言，沉积物岩芯 Q23 经历了比岩芯 Q21 更高的痕量金属污染和生态风险。
