Environmental Earth Sciences

, Volume 59, Issue 6, pp 1349–1357 | Cite as

Phosphorus content and fractionation of phosphate in the surface sediments of the Daliao river system in China

  • Zhigang Wang
  • Chunye LinEmail author
  • Mengchang He
  • Xiangchun Quan
  • Zhifeng Yang
Original Article


The Daliao river system in China has been seriously affected by long-term intensive industrial, urban and agricultural activities. The objectives of this study were to determine the total phosphorus (TP) content and forms of phosphate in the sediments and investigate geochemical relationships between P forms and sediment mineral phases. Twenty-seven samples of surface sediments were collected and analyzed for P and major elements. Chemical forms of phosphate in the sediments were measured by sequential selective extraction method. Results indicate that TP in the sediments of the Daliao river system averaged 703 mg kg−1, in the range from 206 to 1,342 mg kg−1. The sediments in the tributaries and near cities contained high TP, due to discharge of municipal and industrial effluents. The distribution of phosphate in the various mineral phases followed the order: Ca-P > RES-P > RS-P > Fe-P > Al-P > S/L-P for the Hun river and Taizi river, and Ca-P > Fe-P > RES-P > RS-P > Al-P > S/L-P for the Daliao river. Fe and Ca contents in the sediments were positively correlated to Fe associated P (Fe-P and RS-P) and Ca-P, respectively. In addition, sediment organic matter, Fe and Ca contents were positively correlated to TP in the sediments. However, Al content was not correlated to Al-P or TP in the sediments. Generally, the sediments contaminated by effluents and in tidal zone contained more bioavailable P. Possible release of P from these sediments to overlying water might pose potential risk on estuarine eutrophication.


Daliao river Sediment Phosphorus Fractionation Bioavailability 



Soluble and loosely bound P


Al bound P


Fe bound P


Reductant soluble P


Ca bound P


Residual P


Sediment organic matter



We thank Wei Guo, Haozheng Wang, Yinghong Fan, Yuxiang Zhou, Bing Men for their assistance in the field work. This study was supported by the National Basic Key Research Program of China (2004CB418502) and the National Natural Science Foundation of China (40671002). Financial support by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry and by Beijing Normal University to Chunye Lin is gratefully acknowledged.


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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Zhigang Wang
    • 1
  • Chunye Lin
    • 1
    Email author
  • Mengchang He
    • 1
  • Xiangchun Quan
    • 1
  • Zhifeng Yang
    • 1
  1. 1.State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of EnvironmentBeijing Normal UniversityBeijingChina

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