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ISSN : 2287-8327

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Vol.38 No.3
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Behavioral characteristics of phosphorus in sediments according to the forms of phosphorus

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2015, v.38 no.3, pp.319-326
https://doi.org/10.5141/ecoenv.2015.032

Tae-hoon Kim (Department of Environmental Application Science, K)
Jongjun Lee (Department of Environmental Application)

Tae-hoon, K. , Jongjun, L. , & (2015). Behavioral characteristics of phosphorus in sediments according to the forms of phosphorus. Journal of Ecology and Environment, 38(3), 319-326, https://doi.org/10.5141/ecoenv.2015.032
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Abstract

This study investigates the behavioral characteristics and forms of phosphorus in the sediment according to the oxygen condition (aerobic/anaerobic). In the behavioral characteristics analysis, Al-P and Fe-P concentrations were the highest among the forms of inorganic phosphorus, and therefore had the strongest impact on sorption and release correspond¬ing to environmental condition changes. In the experimental investigation of the inorganic forms of phosphorus in the sediment according to the oxygen condition, we determined that the forms of inorganic phosphorus did not greatly affect the sorption or release reaction because the distribution ratios of the inorganic forms remained constant corresponding to changes of dissolved oxygen (DO) conditions. In contrast, the forms of organic phosphorus in the sediments affected both sorption and release. Furthermore, labile-P and moderately labile-P forms were the major mechanisms of sorption in sediment. Moderately labile-P was the greatest contributor to phosphorus release action in sediment. As environmen¬tal changes are important for the behavioral characteristics of phosphorus in sediment, the forms of phosphorus should be considered to have a greater effect, especially in the organic phosphorus case. Therefore, based on the present study results, sediment evaluation aimed at controlling internal pollutants in reservoirs should include an examination of the forms of phosphorus present, as well as the release characteristics of environmental changes, which are influential factors of phosphorus control. Further research in this field is required.

keywords
inorganic phosphorus, organic phosphorus, phosphorus forms, phosphorus release

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