Huang Ting-Lin, Fang Kai-Kai, Zhang Chun-Hua, Zhou Shi-Lei, Zeng Ming-Zheng, Liu Fei, Xia Chao, Cong Hai-Bing
Key Laboratory of Northwest Water Resource, Environment and Ecology, Ministry of Education, Key Laboratory of Environmental Engineering, Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Department of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China.
Huan Jing Ke Xue. 2016 Sep 8;37(9):3394-3401. doi: 10.13227/j.hjkx.2016.09.018.
The fluorescent components were examined using excitation emission matrix fluorescence spectroscopy-parallel factor analysis technique for samples collected in August, 2015 from Zhouncun Reservoir. Principal component analysis was used to study the main factors and their relative contributions to DOM. Three fluorescent components were identified by PARAFAC, including fulvic-like component(C1:260,350/420 nm), protein-like(C2:280/360 nm) and humic-like (C3:270,390/530 nm) which showed the same source. The even spatial distribution of each component, higher total fluorescence intensity in storage port, high fluorescence index, high biological index, low humification index and the freshness index which was close to one showed that the DOM had a strong autochthonous contribution. The results of PCA showed that the autochthonous contribution reached 70.86%, and those three components of Zhoucun Reservoir could be connected with (440) by nonlinear multiple regression which means we can use the three-dimensional fluorescence spectrum results of DOM to control the pollution sources and indicate the eutrophication degree of Zhoucun Reservoir.
采用激发发射矩阵荧光光谱-平行因子分析技术，对2015年8月从周村水库采集的样品中的荧光成分进行了检测。主成分分析用于研究主要因素及其对溶解性有机物（DOM）的相对贡献。通过平行因子分析（PARAFAC）确定了三种荧光成分，包括类富里酸成分（C1：260,350/420纳米）、类蛋白质成分（C2：280/360纳米）和类腐殖酸成分（C3：270,390/530纳米），它们具有相同的来源。各成分的空间分布均匀，蓄水区总荧光强度较高，荧光指数高，生物指数高，腐殖化指数低，新鲜度指数接近1，表明DOM具有很强的自生源贡献。主成分分析结果表明，自生源贡献达到70.86%，周村水库的这三种成分可以通过非线性多元回归与（440）相关联，这意味着我们可以利用DOM的三维荧光光谱结果来控制污染源并指示周村水库的富营养化程度。
