【摘要】 目的探讨天津市津河有机物、生物性污染状况。方法在津河上、中、下游设3个断面,各个断面均设6个采样点,以生化需氧量(BOD₅²⁰)、细菌总数、粪大肠菌群为检测项目,结果按GB3838-2002地表水环境质量标准评价。结果各断面BOD₅²⁰值均超过GB3838-2002 V类标准,粪大肠菌群符合GB3838-2002V类标准,各断面间BOD₅²⁰及粪大肠菌群差异无显著性,细菌总数差异有显著性,上游断面高于下游断面（P<0.05）。结论津河水质有机物污染较生物性污染严重。更多还原

【Abstract】 Objective To explore the organic and biological contamination in water body of Jin River of Tianjin. Methods Three sections were set up in the upper reaches, middle reaches and lower reaches of Jin River respectively. 6 sampling points were set up in each section of the river. The levels of BOD₅²⁰, total count of bacteria, fecal coliform count of the river water were determined. The obtained data were assessed based on GB3838-2002 the National Criterion for Environmental Quality of Surface Water. Results The levels of BOD₅²⁰ of river water samples collected from each section of Jin River exceeded the standard ruled by GB3838-2002 Grade V. The levels of fecal coliform count of water samples were between the national standards of Grade Ⅲ and Ⅴ of GB3838-2002. The water samples collected from different sections of Jin River water showed no significant differences in the levels of BOD₅²⁰ and fecal coliform count, and significant difference in total count of bacteria. Significantly higher levels of total count of bacteria were observed in water samples collected from upper reaches of Jin River compared with those collected from lower reaches （P<0.05）. Conclusion The organic pollution was more serious than the biological contamination observed in Jin River water.更多还原