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Zhang P, Hu R, Zhu L, Wang P, Yin D, Zhang L. Distributions and contamination assessment of heavy metals in the surface sediments of western Laizhou Bay: Implications for the sources and influencing factors. Mar Pollut Bull 2017; 119:429-438. [PMID: 28365020 DOI: 10.1016/j.marpolbul.2017.03.046] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 03/19/2017] [Accepted: 03/22/2017] [Indexed: 06/07/2023]
Abstract
Heavy metals (Cu, Pb, Cr, Cd and As) contents in surface sediments from western Laizhou Bay were analysed to evaluate the spatial distribution pattern and their contamination level. As was mainly concentrated in the coastal area near the estuaries and the other metals were mainly concentrated in the central part of the study area. The heavy metals were present at unpolluted levels overall evaluated by the sediment quality guidelines and geoaccumulation index. Principal component analysis suggest that Cu, Pb and Cd were mainly sourced from natural processes and As was mainly derived from anthropogenic inputs. Meanwhile, Cr originated from both natural processes and anthropogenic contributions. Tidal currents, sediments and human activities were important factors affecting the distribution of heavy metals. The heavy metal environment was divided into four subareas to provide a reference for understanding the distribution and pollution of heavy metals in the estuary-bay system.
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Affiliation(s)
- Pan Zhang
- College of Marine Geoscience, Ocean University of China, Qingdao 266100, PR China; Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, PR China
| | - Rijun Hu
- College of Marine Geoscience, Ocean University of China, Qingdao 266100, PR China; Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, PR China.
| | - Longhai Zhu
- College of Marine Geoscience, Ocean University of China, Qingdao 266100, PR China; Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, PR China
| | - Peng Wang
- National Marine Environmental Monitoring Center, PR China
| | - Dongxiao Yin
- College of Marine Geoscience, Ocean University of China, Qingdao 266100, PR China; Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, PR China
| | - Lianjie Zhang
- College of Marine Geoscience, Ocean University of China, Qingdao 266100, PR China; Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, PR China
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