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Fangjian XU, Xu TIAN, Xianchao WANG, Xiaoming WAN, Bo CHEN. Establishing environmental background values of selected trace elements and environmental quality assessment of fine-grained sediments in the Jiaozhou Bay catchment, China[J]. Journal of Oceanology and Limnology, 2023, 41(4): 1444-1453

Establishing environmental background values of selected trace elements and environmental quality assessment of fine-grained sediments in the Jiaozhou Bay catchment, China

Fangjian XU1,2, Xu TIAN3, Xianchao WANG4, Xiaoming WAN5, Bo CHEN6
1 College of Marine Science, Hainan University, Haikou 570228, China;
2 Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Haikou 570228, China;
3 Qingdao Marine Comprehensive Proving Ground Co., Ltd., Qingdao 266000, China;
4 Shandong Coalfield Geophysical Prospecting and Surveying Team, Jinan 250104, China;
5 Haikou Center of Marine Geological Survey, Haikou 571127, China;
6 Marine Geological Institute of Hainan Province, Haikou 570206, China
With the development of economy, the impact of human activities on ecological environment is increasing, and environmental protection work is important. Trace elements (Co, Ni, Cu, Pb, Zn, Cd, Cr, and Sc) in surface fine-grained sediment samples from the Jiaozhou Bay catchment were selected to evaluate their 2015 environmental background values and the environmental quality. Using statistical analysis, the environmental background values (ranges) of Sc, Co, Ni, Cu, Pb, Zn, Cd, and Cr were calculated, being 13.1 (10.8–15.4), 12.4 (8.6–16.2), 32.0 (22.9–41.2), 29.6 (13.5–64.9), 24.1 (13.0–44.6), 77.6 (38.5–156.5), 0.07 (0.02–0.20), and 82.5 (66.5–104.0) mg/kg, respectively. The enrichment factor, contamination factor, and pollution load index were used to evaluate the pollution status of the Jiaozhou Bay catchment. The environmental background values of most elements are higher than those of the upper continental crust and lower than those of global shale. At present, the pollution in the eastern Jiaozhou Bay is much higher than that in the western part. The results shall be helpful for future management for trace element pollution monitoring in the Jiaozhou Bay catchment.
Key words:    sediments|environmental background values|environmental assessment|contamination|Jiaozhou Bay   
Received: 2022-03-05   Revised:
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