Bioaccumulation of trace metals in aquatic food web. A case study, Liaodong Bay, NE China

MARINE POLLUTION BULLETIN

卷:137

Article

Radomyski, Artur¹  Lei, Kai²  Giubilato, Elisa¹  Critto, Andrea¹  Lin, Chunye²  Marcomini, Antonio¹ 

[1] Univ Ca Foscari Venice, Dept Environm Sci Informat & Stat, Via Torino 155, I-30172 Venice, Italy

[2] Beijing Normal Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100875, Peoples R China

关键词: Ecological exposure assessment;    Metal bioaccumulation;    Sensitivity analysis;   

DOI  :  10.1016/j.marpolbul.2018.11.002

来源: Elsevier

【 摘 要 】

The recently developed modelling tool MERLIN-Expo was applied to support the exposure assessment of an aquatic food web to trace metals in a coastal environment. The exposure scenario, built on the data from Daliao River estuary in the Liaodong Bay (Bohai Sea, China), affected by long-term and large-scale industrial activities as well as rapid urbanization in Liao River watershed, represents an interesting case-study for ecological exposure modelling due to the availability of local data on metal concentrations in water and sediment. The bioaccumulation of selected trace metals in aquatic organisms was modelled and compared with field data from local aquatic organisms. Both model results and experimental data demonstrated that As, Cd, Cu, Ni, Pb and Zn, out of examined metals, were accumulated most abundantly by invertebrates and less by higher trophic level species. The body parts of the sampled animals with the highest measured concentration of metals were predominantly muscles, intestine and liver and fish skin in the case of Cr. The Morris and extended Fourier Analysis (EFAST) were used to account for variability in selected parameters of the bioaccumulation model. Food assimilation efficiency and slopes and intercepts of two sub-models for calculating metal specific BCFs (BCFmetarexposure concentration) and fish weight (Weightiuh-Lengthfish) were identified as the most influential parameters on ecological exposure to selected metals.

【 授权许可】

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