Historical records of trace metals in two sediment cores of Jiaozhou Bay, north China
Historical records of trace metals in two sediment cores of Jiaozhou Bay, north China
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华北胶州湾两个沉积岩心中痕量金属的历史记录
DOI：
10.1016/j.marpolbul.2022.113400
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发表时间：
2022
影响因子：
5.8
通讯作者：
Baodong Wang
中科院分区：
文献类型：
--
作者：
Xiang Gu;Ming Xin;Jing Wang;Shuang Lu;Maoshan Lian;Chunye Lin;Wei Ouyang;Mengchang He;Xitao Liu;Baodong Wang
为了研究城市化和工业化对沿海微量金属污染的长期影响，对青岛东部老城区和西部新区邻近海岸采集的两个沉积物岩心Q21（代表1965-2018年）和Q23（代表1986-2018年）进行了分析。尽管As、Cd、Co、Cr、Cu、Ni、Pb、Sc和Zn的浓度在核心Q21中较高，但其浓度和污染水平的增加趋势在Q23中更为明显，尤其是2000年代以来。此外，新区的城市化率（1978-2017）与23季度历史金属浓度呈显着正相关。受新区社会经济快速发展影响，23季度8种金属（不含钪）合计超标浓度（0.14~78.4 mg/kg）增速快于21季度（0.58~45.3 mg/kg）。总体而言，沉积物Core Q23比Core Q21经历了更高的微量金属污染和生态风险。
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.