Abstract
The concentration of nitrate in the Huanghe River estuary was controlled by a physical mixing process and was also related to biological processes . The change in phosphate concentration was less between 0.3 and 0.7 µmol L−1, due to affected by the buffering of suspensions and sediments on the removal of phosphate from estuarine waters. The annual transport from the Huanghe River mouth to the sea was 8.45 × 104 t for dissolved inorganic nitrogen and 1.45 × 103 t for phosphate. The distributions of dissolved inorganic nitrogen and silicate in interstitial water of surface sediment were similar to those in surface and bottom seawater. The nutrient concentrations in average in interstitial water were 375 µmol L−1 for ammonia, 1.6 µmol L−1 for nitrite, 6 µmol L−1 for nitrate, 1.2 µmol L−1 for phosphate, and 77 µmol L−1 for silicate. A cycle of phosphate in the estuary is also suggested.
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Shen, Z., Liu, X., Lu, J. (2020). Distributions and Removals of Nutrients in Seawater and Interstitial Water of the Sediments in the Huanghe River Estuary. In: Shen, Z. (eds) Studies of the Biogeochemistry of Typical Estuaries and Bays in China. Springer Earth System Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-58169-8_9
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DOI: https://doi.org/10.1007/978-3-662-58169-8_9
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