4.7 Article

Trophic transfer of emerging metallic contaminants in a neotropical mangrove ecosystem food web

期刊

JOURNAL OF HAZARDOUS MATERIALS
卷 408, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.jhazmat.2020.124424

关键词

Trophodynamic; Estuarine food chains; Neotropical estuaries; Pollution pathway; Steel industry

资金

  1. Sao Paulo Research Foundation (FAPESP) [2014/05701-0, 2015/05258-1]
  2. Espirito Santo Research and Innovation Foundation (FAPES) [67665837/15]
  3. National Council for Scientific and Technological Development (CNPq), Brazil [301615/2015-2]
  4. National Agency for Promotion of Scientific and Technical Research (ANPCYT), Argentina [FONCyT/PICT-1597]

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This study confirms the presence of EMCs in two neotropical mangrove estuarine ecosystems in Brazil and examines the trophic transfer of these elements. The results show biomagnification of EMCs in the Santa Cruz estuary, but biodilution in Vitória Bay, which may be attributed to varying pollution levels. This research provides an essential baseline for future studies and regulations regarding EMCs in the environment.
Emerging metallic contaminants (EMCs) are of concern due their presence in aquatic ecosystems and the lack of environmental regulations in several countries. This study verifies the presence of EMCs in two neotropical mangrove estuarine ecosystems (Espirito Santo Brazil) by evaluating abiotic and biotic matrices across six trophic levels (plankton, oyster, shrimp, mangrove trees, crabs and fish) and hence interrogates the trophic transfer of these elements and their possible input sources. Using the oyster Crassostrea rhizophorae as a biomonitor, ten EMCs (Bi, Ce, La, Nb, Sn, Ta, Ti, W, Y and Zr) were determined. Bi input was from iron export and pelletizing industries; Ce, La and Y inputs were mainly associated with solid waste from steel production, while Zr, Nb and Ti were related to atmospheric particulate matter emissions. EMCs were detected at various trophic levels, showing biomagnification for most of them in the Santa Cruz estuary but biodilution in Vit ' oria Bay. These contrasting results between the estuaries could be attributed to different pollution degrees, needing further research to be fully understood. This is the first report demonstrating EMCs trophic pathways in situ, constituting an essential baseline for future research and safety regulations involving EMCs in the environment.

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