期刊
MARINE POLLUTION BULLETIN
卷 101, 期 2, 页码 852-859出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2015.11.019
关键词
Metals; Chemical speciation; Sediment analysis; Ecological risk; Nekton; Human health risk
资金
- Natural Science Foundation of Guangdong Province, China [2014A030310220]
- Founds of Key Laboratory of Aquatic Product Processing, Ministry of Agriculture, PR China [NYJG201513]
- Special Scientific Research Funds for Central Non-profit Institutes, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences [2014TS02]
We investigated the total concentrations of heavy metals in surface sediments and nekton, along with sediment metal chemical partitioning in Qinzhou Bay of the Beibu Gulf. Cd was preferentially associated with the acid-soluble fraction and Pb mainly with the reducible fraction, whereas a major portion of Cr, Ni, Cu, and Zn was strongly associated with the residual fractions. A principal component analysis (PCA) in sediment metal speciation revealed three groupings (Cd; Pb; Cr, Ni, Cu, and Zn) that mainly resulted from different distributions of the metals in the various fractions. The Cr concentrations in nekton species were higher than maximum Cr concentrations permitted by the Chinese National Standard (GB 2762-2012). Taking as a whole, surface sediments of Qinzhou Bay had a 21% incidence calculation of adverse biological effects, based on the mean probable-effects-levels quotient. A human health risk assessment indicated no significant adverse health effects from consumption of nekton. (C) 2015 Elsevier Ltd. All rights reserved.
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