抄録
Pollution of sea water in Tateyama beach in Chiba Pref. by coli-form group bacteria was examined and following results were obtained. Sea water has bectericidal activity against Escherichia coli B. Linear correlation coefficient, calculated between the concentration of halogen ions and the logarithmic transformed MPN-value for coli-form group bacteria, was -0.774 (N=10) and showed clear significance at 1% level. The extent of pollution by these bacteria being introduced from rivers and sewages seemed to be mainly affected by the bactericidal nature of the sea water in addition to the dilution by the sea water.
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