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Hourly variation of water quality in the Hwangsan-do sea area was high. The highest and lowest concentrations of salinity, DO, pH, Temp, TN, TP and COD were shown two times in the 24 hours. The correlation coefficient of salinity and COD was -0.83, salinity and TN -0.73, salinity and TP -0.75. When the salinity was low, COD, TN and TP were high. Therefore organic matter and nutrient are coming into...
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