Faculty of Science, Health and Education, University of the Sunshine Coast, Maroochydore, DC 4558, Queensland, Australia.
Water Sci Technol. 2010;61(5):1355-61. doi: 10.2166/wst.2010.227.
In this study, faecal sterols were used to identify human faecal pollution in a non-sewered catchment in Southeast Queensland, Australia. In all, 36 water samples were collected from six sites on six occasions and the concentration of sterols were determined using gas chromatography and mass spectrometry. The stanols concentration in water samples generally increased with increased catchment runoff. After moderate rainfall, high coprostanols levels found in water samples indicated human faecal pollution via defective septic systems. In contrast, it appears that during dry weather human faecal pollution is not occurring in the study catchment. Sterol profiles also pointed to a cattle farm polluting during modest catchment runoff. The method used in this study was able to identify the sources of faecal pollution to the catchment due to rainfall.
在本研究中，采用粪便甾醇来识别澳大利亚昆士兰州东南部一个未排水流域中的人类粪便污染。总共从六个地点的六个时间采集了 36 个水样，并使用气相色谱和质谱法测定了甾醇的浓度。水样中的斯坦醇浓度通常随集水区径流量的增加而增加。在中度降雨后，水样中发现的高粪甾醇水平表明，通过有缺陷的化粪池系统存在人类粪便污染。相比之下，在干燥天气期间，研究流域似乎没有发生人类粪便污染。甾醇图谱还表明，在适度的集水区径流量期间，一个奶牛场正在污染该流域。由于降雨，本研究中使用的方法能够识别出流域中粪便污染的来源。
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