基于三维荧光光谱特征峰的水体有机污染物综合指标检测

Detection of dissolved organic matter in water based on characteristic peaks of 3D fluorescence spectra

对来源不同一的32个水样进行三维荧光光谱的测定,并用5种典型有机物的荧光特征峰A(腐殖酸类)、C(腐殖酸类)、B(络氨酸类)、T1(色氨酸类)、T2(色氨酸类)进行了单一和组合式建模,发现对于来源不同一的水体的总有机含碳量(TOC)、化学耗氧量(COD)的检测采用这种提取特征峰建模的效果并不理想。该研究说明,依据典型特征峰对水体有机污染物综合指标的检测不具有普适性,仍需要进一步探究。

Modelling for detecting dissolved organic matter with 32 water samples is addressed,using several typical organic characteristic peaks of 3D fluorescence spectra such as Peak A（humic-like）,Peak C（humic-like）,Peak B（tyrosine-like）,Peak T1（tryptophan-like） and Peak T2（tryptophan-like）.Experiments show that the modeling method is not satisfactory to detection of TOC and COD in water from different sources.It is concluded that the modeling method for detecting dissolved organic matters,based on the typical characteristic peaks of 3D fluorescence,is not universal for the variant water.