Geochemical characteristics of phosphorus near the Huanghe River estuary

Li Yue; Yu Ji-jin

doi:10.1007/BF02842830

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Geochemical characteristics of phosphorus near the Huanghe River estuary

Updated：2023-05-16

- Geochemical characteristics of phosphorus near the Huanghe River estuary
- Journal of Oceanology and Limnology Vol. 17, Issue 4, Pages: 359-365(1999)
- Affiliations：
  
  1. Department of Environmental Sciences Qingdao University
  2. Center of Instrumental Analysis Qingdao University
- Author bio：
- Funds：
- DOI：10.1007/BF02842830
  CLC：
- Published：1999
- Accepted：
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Yue, L., Ji-jin, Y. Geochemical characteristics of phosphorus near the Huanghe River estuary., Chin. J. Ocean. Limnol. 17, 359–365 (1999). https://doi.org/10.1007/BF02842830
DOI：

Yue, L., Ji-jin, Y. Geochemical characteristics of phosphorus near the Huanghe River estuary., Chin. J. Ocean. Limnol. 17, 359–365 (1999). https://doi.org/10.1007/BF02842830 DOI：

摘要

Abstract

An improved sequential extraction method was used to extract and determine 7 forms of phosphorus exchangeable or loosely sorbed P (Ads-P)

aluminum-bound P (Al-P)

iron-bound P (Fe-P)

occluded P (Occ-P)

authigenic apatite plus biogenic apatite plus CaCO3-associated P (CFAP-P)

detrital apatite P (FAP-P)

and organic bound P (Org-P) in suspended matter and surface sediments of the Huanghe River (Yellow River)

its estuary and nearby shelf. The concentrations of dissolved inorganic and organic P in river water were also determined. A dissolved P flux of 1.6 billion grams per year

solubilized P flux of 281 billion grams per year

and buried P flux of 588 billion grams per year from the Huanghe River to the Bohai Sea were calculated using the concentrations of P determined in the water column

suspended matter and sediments. Due to the high suspended load and low discharge of the Huanghe River

the direct contribution of dissolved P carried in solution by it to the Bohai Sea is minor compared to the solubilized P released from the suspended matter and sediments. More than two-thirds of the total P transported by the Huanghe River is deposited and buried in marine sediments. Decomposition of riverine organic matter which releases organic bound P is an essential source of dissolved/solubilized P in the sea.

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references

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