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- Title
Surface Sediment Cu Characteristics and the Possible Influencing Factors in the Northern Four-Island Area of Penglai District, Yantai City, China.
- Authors
Hu, Lei; Zou, Ande; Zhang, Pengpeng; Liu, Hongbo; Mei, Xi; Hu, Ziyuan; Lei, Yanxiang; Wang, Xuewenyu; Wang, Xiaodan; Chen, Qiao; Deng, Qinghai
- Abstract
Sediment Cu is significant for oceanic eco-environment and seafood quality. The sources and influencing factors of sediment Cu in the island area differ from those in other areas since the island is far away from the mainland. But there is no detailed information about sediment Cu characteristics and influencing factors in this specific area. The northern four-island area of Penglai District, Yantai City, China, was selected, and sediments were sampled. The sediments have a low Cu background (5.94–22.17 µg/g, an average of 12.19 µg/g) because of the far distance from the mainland. But more Cu accumulates in sediment near the islands, indicating the effect of islanders' daily activities on sediment Cu levels. Sediment Cu levels are significantly correlated with grain sizes and the organic matter (OM) in sediment and are not with pH, Fe, Mn, redox, and total sulfur levels. The normalization of sediment Cu with Ni, Sc, and the calculation of enrichment factors (EF) confirm the sediment Cu mainly derives from natural or internal sources. The prevailing culture activity near the northern four-islands slows ocean current velocity, causing finer fractions and higher sediment Cu levels. The sediment OM near the island is slightly higher than further away as a consequence of the local inhabitants' activities. Sediment TOC/TN implies sediment OM originates from the terrestrial regions. So, the imported OM by the local inhabitant' activity is another factor for the higher sediment Cu levels near the northern four-island area. Sediment grain size does a more significant effect on sediment Cu near the island area than sediment OM. An enrichment model of sediment Cu levels in faraway island area is forwarded.
- Subjects
CHINA; COPPER; SEDIMENTS; FRACTIONS; OCEAN currents; SEDIMENT sampling; GRAIN size
- Publication
Water, Air & Soil Pollution, 2023, Vol 234, Issue 3, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-023-06087-0