A Survey on Pyrogenic Contents, Bacteria and BOD in River Water for Agricultural Utilization

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  • 農業用水中の発熱性物質と細菌類およびBODの検索
  • ノウギョウヨウ スイチュウ ノ ハツネッセイ ブッシツ ト サイキンルイ オヨ

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Abstract

A survey was conducted on the water pollution of the Iimori River for agricultural utilization by examining pyrogen contents, bacteria and BOD. Samples were analyzed by the Japanese pyrogen test (PT), Limulus test (LT), and synthetic substrate test (ST) for pyrogen contents. They were also examined for total colonies (TC), Gram-negative bacteria (GB), coliforms (CM) and BOD.<BR>As a result, the values of bacteria, pyrogen contents and BOD in river water were higher in the urban area than in the rural area. ST ranged from 899 to 6712 ng/ml. At an effluent point of the sewage treatment plant, a few bacteria were detected. Neither CM nor GB were detected. The results of PT tended to be parallel to those of LT.

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