1. Department of Environmental Science, School of Resources & Environmental Sciences, East China Normal University, Shanghai 200062, China 2. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012,China 3. State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012,China
Abstract:The water samples of the Tien Lake were collected for the three-dimensional fluorescence spectrum detected. And parallel factor analysis (PARAFAC) and principal component analysis (PCA) were used for the spectra analyzing to know the main factor and relative contribution of the chromophoric dissolved organic matter (CDOM). PARAFAC decomposed CDOM into four components, the humic-like: C1(240, 415), C3(265, 525), C4(255, 505) and the protein-like: C2(230/280, 330). The fluorescence intensity of CDOM components was high in north and estuary of the lake, but low in the other region. All the four components show significant positive correlations (p<0.01), this result means they may have the same sources. Principal component analysis shows that these four components of the Tien Lake are all from terrestrial organic matter, meanwhile its DTN, DTP, DON may also come with the terrestrial substance. These components of Tien Lake can well be connected with dissolved nutrient salts by nonlinear multiple regression, which means we can use the three-dimensional fluorescence spectrum results of CDOM to indicate the eutrophication degree of Tien Lake.
[1] WU Feng-chang, WANG Li-ying, LI Wen, et al(吴丰昌,王立英,黎 文,等). Journal of Lake Science(湖泊科学), 2008,(01): 1. [2] Dr Geller A. Swiss Journal of Hydrology, 1985, 47(1): 27. [3] SONG Xiao-na, YU Tao, ZHANG Yuan, et al(宋晓娜,于 涛,张 远,等). Acta Scientiae Circumstantiae(环境科学学报), 2010(11): 2321. [4] WANG Sheng-rui, JIN Xiang-can, ZHAO Hai-chao, et al(王圣瑞,金相灿,赵海超,等). Acta Pedologica Sinica(土壤学报), 2005,(5): 805. [5] JIA Ming, ZHANG Li-xia, ZHANG Yuan-hu(贾 明,张丽霞,张元湖). Journal of Analysis and Test(分析测试学报), 2013,(03): 302. [6] Botosoa E P, Karoui R. Food and Bioprocess Technology, 2013, 6(9): 2365. [7] Zhou Z, Guo L, Shiller A M, et al. Marine Chemistry, 2013: 10. [8] Sanchez N P, Skeriotis A T, Miller C M. Water Research, 2013, 47(4): 1679. [9] Zhang Y, Yin Y, Feng L, et al. Water Research, 2011, 45(16): 5110. [10] LIN Hui, GUO Wei-dong, XU Jing, et al(林 辉,郭卫东,徐 静,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2013,33(2): 404. [11] Du L, Li Y, Chen X, et al. Limnologica-Ecology and Management of Inland Waters, 2011, 41(3): 213. [12] WEI Fu-sheng(魏复盛). China Environmental Science Press(中国环境科学出版社), 2002. [13] Stedmon C A , Markager S, Bro R. Marine Chemistry, 2003, 82(3-4): 239. [14] Stedmon C A, Bro R. Limnol. Oceanogr. Methods, 2008, 6: 572. [15] Chen H, Meng W, Zheng B, et al. Limnologica-Ecology and Management of Inland Waters, 2013, 43(6): 482. [16] Maie N, Yamashita Y, Cory R M, et al. Applied Geochemistry, 2012, 27(4): 917. [17] Stedmon C A, Markager S. Limnology and Oceanography, 2005, 50(2): 686. [18] Cory R M, McKnight D M. Environmental Science & Technology, 2005, 39(21): 8142. [19] CAI Wen-liang, XU Xiao-yi, LUO Gu-yuan, et al(蔡文良,许晓毅,罗固源,等). Environmental Chemistry (环境化学), 2012,(07): 1003. [20] LU Shao-yong, JIN Xiang-can, ZHANG Ye, et al(卢少勇,金相灿,张 烨,等). Wetland Science (湿地科学), 2009,(02): 136. [21] FENG Long-qing, LIU Ming-liang, ZHANG Yun-lin, et al(冯龙庆,刘明亮,张运林,等). Advances in Water Science(水科学进展), 2011, (01): 105.