翻译：22监测方案。针对不同用水行为本实验分别于不同监测点位监测各用水行为下产生的污水污水采集工作均通过自动取样器于各用水行为对应的优势时段内采集瞬时水样予以完成自来水样品从自来水龙头处放水并利用取样桶足量采集。采样工作共计3日采集样品共计48个监测指标为34S。同时为进一步研究硫稳定同位素在排水片区末端的变化规律及对应的不确定度差异针对研究区域内的排水片区末端污水中的34S进行了连续72 h

2.2 Monitoring plan. In order to monitor the sewage generated by different water use behaviors, this experiment collected sewage at different monitoring points for each water use behavior. The sewage collection work was completed by an automatic sampler during the advantageous time period corresponding to each water use behavior, and tap water samples were collected by letting the water flow from the tap and using a sampling bucket to collect a sufficient amount. The sampling work lasted for 3 days, and a total of 48 samples were collected. The monitoring index was δ34S. At the same time, in order to further study the variation of sulfur stable isotopes at the end of the drainage area and the corresponding uncertainty differences, continuous hourly monitoring of δ34S in the sewage at the end of the drainage area in the study area was carried out for 72 hours. The monitoring point was located at the end of the drainage area in the study area (point M), and the sample collection work at this point was carried out simultaneously with the collection of sewage samples under different water use behaviors to ensure that the sewage generated under different water use behaviors was extracted and flowed downstream through point M after being collected. The distribution of experimental monitoring points is shown in Figure 2. The experimental monitoring plan is detailed in Tables 2 and 3