Quantifying Sediment Nitrogen Releases Associated with Estuarine Dredging
  • 【DOI】

    10.1007/s10498-011-9139-y

  • 【摘要】

    Experimental studies of sediment pore water NH4 + chemistry, adsorbed NH4 + concentrations, sediment–water NH4 ... 展开>>Experimental studies of sediment pore water NH4 + chemistry, adsorbed NH4 + concentrations, sediment–water NH4 + exchange and N2–N flux were carried out to quantify the mass of labile N that can be released during large-scale dredging activities. Pore water NH4 + concentrations below 0.5-m sediment depth averaged 5?±?2?mmol?L?1 with average adsorbed NH4 + concentrations of 11?μmol?g?1. Elevated NH4 + concentrations found in rapidly accreting dredge channels are partly a result of the rapid advective burial of both reactive organic matter and pore water. Elutriate tests, a dilution of sediment with site water, yielded adsorbed NH4 + concentrations very similar to those using the more typical KCl e 收起<<

  • 【作者】

  • 【刊期】

    Aquatic Geochemistry 2011年4-5期

  • 【语种】

    eng