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Comparison of the Methods to Analyze Freshwater Sediments  

Yoon, Byeng-Seok (Water Analysis & Research Center, Korea Water Resources Corporation)
Kim, Eun-Mi (Water Analysis & Research Center, Korea Water Resources Corporation)
Kim, Hak-Chul (Water Analysis & Research Center, Korea Water Resources Corporation)
Lee, Jae-Hee (Water Analysis & Research Center, Korea Water Resources Corporation)
Jung, Sang-Gi (Water Analysis & Research Center, Korea Water Resources Corporation)
Lee, Sang-Tae (Water Analysis & Research Center, Korea Water Resources Corporation)
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Abstract
In this study, Chemical Oxygen Demand(COD) which is the measure of organic substances, Total nitrogen(T-N), Total phosphorous(T-P), Fe and Mn were analyzed in the sediments of dam reservoir. The purpose of this study were to understand the relevances among the analytical methods adopted and the applicabilities of those methods. For the determination of COD, Standard Method for the Examination of Marine Environment(SMEME) and Standard Method for the Examination of Sanitary(SMES) was used. Both method had wide dynamic range and the deviations of the values obtained by two methods were small because $KMnO_4$ method closely reflected BOD and organic substances. For the determination of T-N and T-P, Standard Method for the Examination of Food(SMEF) and Standard Method for the Examination of Sanitary(SMES) were used. Two methods for T-N were both the acid-base titration but SMES gave less T-N values than SMEF because of the differences in digestion and distillation steps. Two methods for T-P gave the comparable values after acid digestion of $HNO_3$ and $HClO_4$. The determination of heavy metals as a Fe, Mn was mainly divided to the leaching method and acid digestion method. The values obtained by leaching method were less than those by digestion method. It is thought that the condition of acid digestion was more severe than that of leaching method.
Keywords
Sediments; COD; T-N; T-P; Metals;
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Times Cited By KSCI : 1  (Citation Analysis)
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