Nitrate contamination in groundwater of the Yellow River Delta and its effect on the marine environment

Mitsuyo Saito, Shin Ichi Onodera, Kunihide Miyaoka, Jianyao Chen, Makoto Taniguchi, Guanqun Liu, Yoshihiro Fukushima

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The current condition of nitrate (NO3-) contamination in groundwater and its effect on the marine environment were evaluated in the Yellow River Delta, northeastern China. In the groundwater recharge area, NO3- contamination is suggested to be more severe compared with that in the groundwater discharge area. Also a relatively large amount of nitrogen is estimated to have accumulated in the aquifer of the recharge area. However, distribution of nitrate-nitrogen (NO3--N) concentrations and δ15N implied a denitrification process in the aquifer of the coastal area. In addition, a high rate of denitrification was indicated there by in situ experiments involving injected tracer water with high concentrations of NO3--N. Based on these results, it is suggested that a large amount of nitrate will be removed before it reaches the sea.

Original languageEnglish
Title of host publicationIAHS-AISH Publication - Water Quality and Sediment Behaviour of the Future
Subtitle of host publicationPredictions for the 21st Century
Pages271-277
Number of pages7
Edition314
Publication statusPublished - Dec 1 2007
Externally publishedYes
EventInternational Symposium: Water Quality and Sediment Behaviour of the Future: Predictions for the 21st Century - 24th General Assembly of the International Union of Geodesy and Geophysics (IUGG) - Perugia, Italy
Duration: Jul 11 2007Jul 13 2007

Publication series

NameIAHS-AISH Publication
Number314
ISSN (Print)0144-7815

Other

OtherInternational Symposium: Water Quality and Sediment Behaviour of the Future: Predictions for the 21st Century - 24th General Assembly of the International Union of Geodesy and Geophysics (IUGG)
CountryItaly
CityPerugia
Period7/11/077/13/07

Keywords

  • Denitrification process
  • Marine environment
  • Nitrate contamination
  • Yellow River Delta

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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  • Cite this

    Saito, M., Onodera, S. I., Miyaoka, K., Chen, J., Taniguchi, M., Liu, G., & Fukushima, Y. (2007). Nitrate contamination in groundwater of the Yellow River Delta and its effect on the marine environment. In IAHS-AISH Publication - Water Quality and Sediment Behaviour of the Future: Predictions for the 21st Century (314 ed., pp. 271-277). (IAHS-AISH Publication; No. 314).