Study of the Fluorescence Characteristics of DOM from the Yangtze River and Jialing River Around Chongqing’s Urban Areas
JI Fang-ying1, LI Si1, ZHOU Guang-ming2, YU Dan-ni2, WANG Tu-jin1, CAO Lin1, TAN Xue-mei1, YANG Da-cheng2, ZHOU Xiao-yi3
1.Key Laboratory of Three Gorges Reservoir Region’s Eco-environment, Ministry of Education, Chongqing University, Chongqing 400045, China 2.School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China 3.Sichuan Institute of Geological Engineering Investigation, Chengdu 610072, China
Abstract：The fluorescence emission and excitation emission matrix (EEM) technologies were used to characterize the dissolved organic matter (DOM) in the water body of the Yangtze River and Jialing River around the Chongqing urban areas from April to August 2008.Concerning about the accidents of the Wenchuan’s Earthquake in May and Tangjiashan Yansaihu’s effects in June, and the high water period time in the summer in two months of July and August, from the EEM obtained from each sampling station and time, the composition, distribution and their changing features of the DOM in the two rivers were investigated as combined with the water samples’ environmental parameters such as pH, DO, DOC with EEM’s fingerprint features, f450/500 etc; finally the bio-environment behavior effects of the three types of fluorescence peaks were elaborated, where humic-like, fulvic-like, and protein-like from the five sampling stations’ EEMs during the five months were given detailed representation.From the experimental results obtained, the fluorescence peaks are mainly composed of two types of fluorophores: humic-like and protein-like in the two rivers around the Chongqing urban areas during the investigation in five months, the protein-like’s peaks value in Jialing River is higher than the values in the Yangtze River, and all the fluorescence peaks in the two Rivers’ water body decrease more or less after the two Rivers join in Chun Tan sampling station; the protein-like peak is notably higher after the “5·12” Earthquake period time including May and June and high water period time, which mainly originated from terrestrial sources, but its intensities decreased observably while the water bodies of the two rivers joining together in the Chao Tianmen and Chun Tan’s sampling station.
吉芳英1，黎 司1，周光明2，虞丹尼2，王图锦1，曹 琳1，谭雪梅1，杨大成2，周小义3 . 重庆主城区两江溶解有机质的荧光光谱特征[J]. 光谱学与光谱分析, 2010, 30(01): 233-238.
JI Fang-ying1, LI Si1, ZHOU Guang-ming2, YU Dan-ni2, WANG Tu-jin1, CAO Lin1, TAN Xue-mei1, YANG Da-cheng2, ZHOU Xiao-yi3. Study of the Fluorescence Characteristics of DOM from the Yangtze River and Jialing River Around Chongqing’s Urban Areas . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(01): 233-238.
