荧光光谱因与水样一一对应而被称为“水质荧光指纹”, 越来越多地被用于水环境监测。 研究了大流量河道A河的水质荧光指纹特征及变化。 结果表明, 该河的三维荧光光谱中含有三个典型的荧光峰, 分别在230/340, 280/320和250/450 nm附近, 而三个峰的强度变化很大, 而且有突变的现象。 同期的CODMn没有明显变化。 研究表明, 荧光指纹很适合显示大流量水体的水质变化, 且可以弥补常规参数不能反映成分变化的不足, 是水质预警的好工具。

In the present study, the three-dimensional fluorescence spectra of River A with great flow rate were investigated. The results showed that there existed three unambiguous peaks in the excitation-emission matrix of River A at λex/λem of around 230/340, 280/320 and 250/450 nm respectively. The fluorescence intensity varied significantly and had sharp fluctuation sometimes. But the CODMn of the samples remained quite stable. This study indicated that fluorescence technique could demonstrate the pollution in the water bodies with great flow rate and furthermore make up for the deficiency of the conventional parameters related to organic pollution, i. e. invalidation to exhibit the components of pollutants. It is a good tool for the early-warning of the water quality.