硫同位素指标在不同用水行为下的稳定性分析

统计结果显示，各用水行为下硫同位素指标对应的不确定度范围为0.28‰ ~2.26‰，其中淋浴行为下污水中δ34S指标的不确定度最小为0.28‰，餐厨行为下δ34S指标的不确定度则相对最大为2.26‰。因此结合不同用水行为下硫稳定同位素的变化规律及不确定度的综合分析，δ34S在整体范围上受不同用水行为影响较小，其在各类用水行为下指标稳定性较好。

The statistical results show that the uncertainty range of sulfur isotope indicators under different water use behaviors is 0.28‰ to 2.26‰. Among them, the uncertainty of δ34S indicator in sewage under shower behavior is the smallest at 0.28‰, while the uncertainty of δ34S indicator under kitchen behavior is relatively the largest at 2.26‰. Therefore, combined with the change rules of sulfur stable isotopes under different water use behaviors and the comprehensive analysis of uncertainty, δ34S is less affected by different water use behaviors in the overall range, and its indicator stability is better under various water use behaviors.