Sun Fu, Sha Jing, Liu Yan-Hua
School of Environment, Tsinghua University, Beijing 100084, China.
Huan Jing Ke Xue. 2012 Nov;33(11):3778-86.
With the increasing public recreational access to urban surface water, it is of critical importance for densely populated urban areas to study the occurrence of fecal pollution, conduct health risk assessment, and accordingly implement effective monitoring program and risk management. Five typical urban surface water bodies were selected in a southern city in China, and total coliforms (TC), fecal coliforms (FC), Escherichia coli (EC), enterococci (ENT), and some other water quality indexes were monitored. The occurrence and the temporal and spatial distribution of the four fecal indicator bacteria were studied, and furthermore the correlations among the four indicator bacteria and the other water quality indexes were examined. TC and FC in the studied water bodies generally ranged from 10(3) L(-1) to 10(7) L(-1), while EC and ENT usually varied below 200 L(-1) and 10(5) L(-1) respectively. The four fecal indicator bacteria were observed to vary seasonally and could also indicate the pollution from surroundings. Statistically significant correlations were identified among the four fecal indicator bacteria as well as between them and the other water quality indexes, e. g. dissolved oxygen.
随着公众对城市地表水娱乐活动的日益增加，对于人口密集的城市地区而言，研究粪便污染的发生情况、进行健康风险评估，并据此实施有效的监测计划和风险管理至关重要。在中国南方的一个城市选取了五个典型的城市地表水体，对总大肠菌群（TC）、粪大肠菌群（FC）、大肠杆菌（EC）、肠球菌（ENT）以及其他一些水质指标进行了监测。研究了四种粪便指示菌的发生情况及其时空分布，此外还考察了这四种指示菌与其他水质指标之间的相关性。研究水体中的总大肠菌群和粪大肠菌群通常在10³L⁻¹至10⁷L⁻¹范围内，而大肠杆菌和肠球菌通常分别在200L⁻¹和10⁵L⁻¹以下变化。观察到这四种粪便指示菌具有季节性变化，并且还能指示来自周边环境的污染。在这四种粪便指示菌之间以及它们与其他水质指标（如溶解氧）之间发现了具有统计学意义的相关性。
