有明海奥部底質における吸着態NH<sub>4</sub><sup>+</sup>の季節変化とその影響因子  [in Japanese] Seasonal Variation of NH<sub>4</sub><sup>+</sup> Adsorption in Bottom Sediments and its Influence Factor in the Inner Area of the Ariake Bay  [in Japanese]

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Author(s)

Abstract

The seasonal variation of sediment adsorption of NH<sub>4</sub><sup>+</sup> in the inner area of the Ariake Bay was investigated during June, 2010-May, 2011. The adsorbed NH<sub>4</sub><sup>+</sup>-N concentration between sampling sites was closely related to the mud content in sediments. The amounts of NH<sub>4</sub><sup>+</sup>-N adsorbed onto the sediment particles were found to account for approximately 80 ? 90% of the total amounts of NH<sub>4</sub><sup>+</sup>-N (dissolved + adsorbed NH<sub>4</sub><sup>+</sup>-N) in sediments throughout the year. The sediment environmental factors that affect the adsorption coefficient (<i>K<sup>*</sup></i>) were determined using a stepwise multiple regression analysis. As a result, we found that redox potential at St1 (muddy sediment) and mud content at St2 (sand-muddy sediment) had an important effect on <i>K<sup>*</sup></i>, respectively.

Journal

  • Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 69(2), I_1141-I_1145, 2013

    Japan Society of Civil Engineers

Codes

  • NII Article ID (NAID)
    130004550975
  • NII NACSIS-CAT ID (NCID)
    AA12508551
  • Text Lang
    JPN
  • ISSN
    1884-2399
  • NDL Article ID
    025021847
  • NDL Call No.
    Z43-1894
  • Data Source
    NDL  J-STAGE 
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