Fluorescence Characterization of Dissolved Organic Matter in East China Sea
WANG Jiang-tao1, GUAN Ha-si-gao-wa1, ZHAO Wei-hong2, WANG Xiu-lin1
1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China 2. Key Laboratory of Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Abstract：Sea water samples were collected in the East China Sea in March and April，2005，and three-dimensional fluorescence of dissolved organic matter was measured by fluorescence excitation-emission matrix spectroscopy. The position, number and intensity of fluorescence peak in the spectra and the relations of the peaks were analyzed to determine the type, distribution and origin of the fluorescence dissolved organic matter. Seven types of fluorescence peaks were detected from the samples. There are protein-like fluorescence peaks B with Exmax/Emmax=275/300 nm, D with Exmax/Emmax=225/295-305 nm, T with Exmax/Emmax=280/345 nm, and S with Exmax/Emmax=225-240/320-350 nm, two humic-like peaks A with Exmax/Emmax=250-255/410-455 nm and C 335-345/410-440 nm, and marine humic peak M with Exmax/Emmax＝305 nm/400-420 nm. Peaks B, S and A appeared in all surveyed area. Peaks T and D appeared in the north of the surveyed area. Peaks M and C only appeared in a few stations. In the surface layer, the source of the fluorescence dissolved organic matter might be the fresh water outflow of the Yangtze River, while the fluorescence dissolved organic matter in the middle layer had double sources from the Yangtze River and the phytoplankton. The good correlationships of different fluorescence peaks showed the same source or some relationship between the protein-like and the humic-like fluorescence dissolved organic matter.
Key words：Excitation-emission matrix spectroscopy (EEMs);East China sea;Fluorescence;Dissolved organic matter
王江涛1,关哈斯高娃1,赵卫红2,王修林1 . 东海海水中荧光溶解有机物质的三维荧光光谱特征[J]. 光谱学与光谱分析, 2009, 29(05): 1345-1348.
WANG Jiang-tao1, GUAN Ha-si-gao-wa1, ZHAO Wei-hong2, WANG Xiu-lin1 . Fluorescence Characterization of Dissolved Organic Matter in East China Sea . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(05): 1345-1348.
[1] Coble P G, Green S A, Blough N V, et al. Nature, 1990, 348(29): 432. [2] Mopper K, Schultz C A. Mar. Chem., 1993, 41: 229. [3] Coble P G. Mar. Chem., 1996, 51:325. [4] Coble P G, Del Castillo C E, Avril B. Deep-Sea Research Ⅱ Topical Studies in Oceanograph, 1998, 45: 2195. [5] Determann S, Lobbes J M, Reuter R, et al. Mar. Chem., 1998, 62: 137. [6] Mayer L M, Schik L L, Loder T C. Mar. Chem., 1999, 64: 171. [7] Robyn N C, Coble P G, Robert F, et al. Mar. Chem., 2004, 89: 127. [8] Jaffe R, Boyer J N, Lu X, et al. Mar. Chem., 2004, 84: 195. [9] JI Nai-yun, ZHAO Wei-hong, CUI Xin(季乃云, 赵卫红, 崔 鑫). Journal of Ocean University of China(中国海洋大学学报), 2004, 34:197. [10] Callahan J, Dai M H, Chen R F, et al. Mar. Chem., 2004, 89: 211. [11] JI Nai-yun, ZHAO Wei-hong, WANG Jiang-tao, et al(季乃云, 赵卫红, 王江涛, 等). Environmental Science(环境科学), 2006, 27(2): 257. [12] JI Nai-yun, ZHAO Wei-hong, WANG Jiang-tao, et al(季乃云, 赵卫红, 王江涛, 等). Environmental Science(环境科学), 2006, 27(6): 34. [13] ZHAO Wei-hong, WANG Jiang-tao, CUI Xin(赵卫红, 王江涛, 崔 鑫). Chinese High Technology Letter(高技术通讯)，2006，16(4):425. [14] ZHAO Wei-hong, WANG Jiang-tao, CUI Xin(赵卫红, 王江涛, 崔 鑫). Chinese High Technology Letter(高技术通讯)，2007，17(1): 88.
