长安八水有机污染物动态分布及对渭河干流水环境的影响

Dynamic Distribution of Organic Pollutants of the Bashui Rivers in Chang'an and Their Impact on the Main Water Environment of Weihe River

将长安八水(渭、泾、沣、涝、潏、滈、浐、灞八条河流)的水环境质量变化做为主要研究目的,揭示八条河流全流域水污染物特别是可溶性化学有机污染物(DOM)的动态分布特征。基于Matlab软件-三维荧光光谱技术(EEM),并结合平行因子算法(PARAFAC)对水中有机物进行定性和定量表征。通过荧光数据模型中核心一致性诊断、残差平方和以及拆半检验物理意义的分析,合理估计荧光物质成分数,实现了PARAFAC方法对其成分的分解,并揭示支流河流对干流河流的有机物的影响,推动EEMs-PARAFAC法在更广泛的环境监测中的应用。

In this study,the change of water environment quality of eight rivers(Wei,Jing,Feng,Lao,Jue,Hao,Chan and Ba)in Chang'an was taken as the main research target,and the dynamic distribution characteristics of water pollutants,especially soluble organic pollutants(DOM),in the whole basin of the eight rivers were revealed.The organic compounds in water were characterized qualitatively and quantitatively based on EEM and PARAFAC.Through the analysis of core consistency diagnosis,residual sum of squares and physical significance of split test in the fluorescence data model,the number of components of fluorescent substances was reasonably estimated,and the decomposition of its components was realized by PARAFAC method,and the influence of tributary rivers on organic matter in mainstream rivers was revealed,which promoted the application of EEMs-PARAFAC method in a wider range of environmental monitoring.