| Title |
Fractional Composition of Sediment Phosphorus and Potential for Water Pollution in Artificial Reservoirs in Chuncheon Area , Korea |
| Abstract |
Fractional composition of sediment phosphorus and pollution potential of water quality by the sediments in three artificial reservoirs in the vicinity of Chuncheon area are investigated. The fractional scheme was made for four chemically defined phosphorus forms as adsorbed phosphorus, nonaptite inorganic phosphorus, apatite phosphorus and organic phosphorus. The most abundant fraction is organic phosphorus and second, nonapatite inorganic phosphorus, so the efficient scavenging processes of dissolved phosphorus in lake water are biological uptake and chemical complexation. The sediments are in high organic carbon contents of 1.74%, 2.45% and 0.77% in Lakes Soyang, Chuncheon and Uiam, respectively. The C/N ratios of the sediments are 7.4, 14.7 and 7.6 in Lakes Soyang, Chuncheon and Uiam, respectively. This presents the organic matters deposited in the surficial sediments of the Lakes Soyang and Uiam are not mineralized so well, Based on the high labile fraction of sediments phosphorus, organic carbon contents, C/N ratios, sediments of Lakes Soyang and Uiam have high pollution potential to overlying water quality. |