Geochemical characteristics of sediments and analysis of the Changjiang Estuary environment

Tian Rucheng; Chen Jiyu; Liu Cangzi; Wang Xiaojing

doi:10.1007/BF02844294

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Geochemical characteristics of sediments and analysis of the Changjiang Estuary environment

Updated：2023-05-16

- Geochemical characteristics of sediments and analysis of the Changjiang Estuary environment
- Journal of Oceanology and Limnology Vol. 10, Issue 1, Pages: 1-8(1992)
- Affiliations：
  
  Institute of Estuarine and Coastal Research
- Author bio：
- Funds：
- DOI：10.1007/BF02844294
  CLC：
- Published：1992
- Accepted：
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Rucheng, T., Jiyu, C., Cangzi, L. et al. Geochemical characteristics of sediments and analysis of the Changjiang Estuary environment., Chin. J. Ocean. Limnol. 10, 1–8 (1992). https://doi.org/10.1007/BF02844294
DOI：

Rucheng, T., Jiyu, C., Cangzi, L. et al. Geochemical characteristics of sediments and analysis of the Changjiang Estuary environment., Chin. J. Ocean. Limnol. 10, 1–8 (1992). https://doi.org/10.1007/BF02844294 DOI：

摘要

Abstract

Analysis of material from three 55-cm long cores collected with “box corer” in summer of 1988 in the Changjiang Estuary region yielded data on the sedimentation rate

granulometric composition and contents of carbonates

organic matter

Cu and Pb there. Subsequent study of the data led to the conclusion that there is no obvious pollution in the region based on the absolute value of the content of heavy metals

but the region is in potential danger of being polluted as seen by the obvious increase of sedimentation flux of heavy metals to and the enrichment of them on the surface sediment during the last several years

e.g. Pb increased by 10–20 μg/g

Zn by about 30 μg/g

Cu by 5–10 μg/g and Mn by 150 μg/g. A ferromanganese redox interface was found at about 40 cm depth of sediments where Fe and Mn and associated trace metals are enriched. The trace metals such as Zn

Cu have (but Pb does not) the same source

forms

displacement mechanism and geochemical behaviours as those of Fe and Mn in the Changjiang Estuary region.

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references

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