京津市区部分河流及湖泊水质的卫生细菌学调查

以粪大肠菌做指标,对京津市区内部分河流及湖泊水质的卫生细菌学状况进行了调查.调查结果表明,河流进入市区后随人口密度的增加,水中粪大肠菌的数量亦有所升高。表明河流已受到一定程度的生活垃圾的污染.京密引水渠的水质较好,其粪大肠菌值在10~2-10~4个/100ml,北护城河水质较差,粪大肠菌值为10~3-10~5个/100ml.天津海河及新开河除个别点样外,粪大肠菌值为10~2-10~3个/100ml.湖泊水质以昆明湖较为清洁,玉渊潭、紫竹院、北海及圆明园水质中粪大肠菌值一般为10~2-10~4个/100ml,但存在着个别取样点粪大肠菌值较高的情况.

A Sanitary Survey on the Downtown Streams and Lakes of Beijing and Tianjin

A sanitary survey on the downtown streams and lakes of Beijing and Tianjin was made. As shown by the faecal coliforms values of the water samples from the streams and lakes, the water pollution resulted from human beings should be realized seriously by the autho rities concerned to the health of human beings. The Jing-Mi eanal was found to be comparatively clear,its faecal coliforms values were ranged from 102 to 104 cells/100ml. The Kun-Ming lake in the Summer Palace, lakes of the Yu-Yuan-Tan Park, the Violet Bamboo Park, the Beihai park and of the Yuan-Ming-Yuan Park were under this study. Among the five lakes investigated, the Kun-Ming Lake in the Summer Palace was the only one which had not been polluted as indicated by the faecal coliforms values. Others had faecal coliforms values ranged from 102 to 104cells/100ml.