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open access
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ISSN : 1225-3480
In this study, The influence of pollutants flowing in from the vicinity of the Sea Areas of Shellfish production for export got calculated by investigating the type, shape and radius of pollutants to determine how much it affects the sea area. In addition, the sanitary condition of seawater and shellfish in the Narodo Sea area was investigated in accordance with Korean, US and EU regulations to ensure the safety of clams, which are the main production shellfish in Narodo. There were 179 sources of pollution in the waters near Narodo, and a total of 28 places where the flow rate was confirmed. As a result of analyzing samples from January 2018 to December 2020 at 4 sites selected as major land pollution sources, it was found that the concentration of fecal coliform intermittently high in the final discharge outlets of Ikgeum Village sewer, Dohwacheon and Deokjungcheon was found. It was confirmed that the radius of influence was about 2.5 km. From January 2018 to December 2020, the water quality at 27 sites and clams, the main production of shellfish produced in the water of Narodo, were investigated. The values of fecal coliform, E. coli and general bacterial counts of clam were confirmed to be < 18-490, < 18-490 MPN/100 g and 10-3,600 CFU/g, respectively. The results of the investigation at 27 seawater points at the same time were confirmed that the range of fecal coliform coli was < 1.8-27 MPN/100 mL. Moreover, the range of geometric mean and 90th percentile was analyzed to be < 1.8-2.3 and < 1.8-5.3 MPN/100 mL, respectively. Therefore, According to this research, It is believed that it can be used as basic scientific data to manage pollutants and ensure the safety of shellfish by evaluating how much major land pollutants around Narodo of Goheung bacteriologically affect the water quality and shellfish in the sea area.
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