Bacteriological quality of sea water at swimming beaches in Busan area (Korea R.)
1981
Kim, Y.K. (Sungji Inst. of Technology, Busan (Korea R.)) | Chang, D.S. (National Fisheries Univ. of Busan, Busan (Korea R.). Dept. of Food Science and Technology)
This experiment was done to evaluate the sanitary quality of sea water at popular swimming beaches such as Haeundae, Kwanganri and Songjeong which are located in the suburbs of Busan Korea [R.]. One hundred and seventy five sea water samples were collected from the 25 stations during the summer seasons in 1979 and in 1980. The sampling stations were established in the above 3 swimming beaches and the estuary of Suyeong river. To evaluate the sanitary quality, coliform group, fecal coliform, viable cell count and Vibrio Parahaemolyticus were observed. The median value of coliform group MPN of the samples ranged from 2,300 to 6,500/100ml in Kwanganri, 670 to 910/100ml in Heundae and 430 to 460/100ml in Songjeong swimming beach. Geometric mean of fecal coliform MPN was 3,200/100ml in Kwanganri, 500/100ml in Hauendae and 360/100ml in Songjeong swimming beach. Composition of coliform was 23% Escherichia coli group, 20% Citrobacter freundii group, 41% Klebsiella aerogenes group and 16% others. The density of Vibrio parahaemolyticus in Kwanganri was much higher than those in other beaches by 5 to 6 times. Plate count of the samples in the estuary of Syueong river varied from 300 to 8.5 x 10 to the sixth power/ml during the study period. No remarkable difference was observed in bacterial density by tide in swimming beaches but the bacterial density of sea water at ebb tide was obviously higher than those of the samples at flood tide in the estuary of Suyeong river.
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