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长江重庆段溶解性有机物的荧光特性分析

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蔡文良, 许晓毅, 罗固源, 杜娴. 长江重庆段溶解性有机物的荧光特性分析[J]. 环境化学, 2012, 31(7): 1003-1008.
引用本文: 蔡文良, 许晓毅, 罗固源, 杜娴. 长江重庆段溶解性有机物的荧光特性分析[J]. 环境化学, 2012, 31(7): 1003-1008.
shu
CAI Wenliang, XU Xiaoyi, LUO Guyuan, DU Xian. Fluorescence characteristics of dissolved organic matter in the Chongqing section of Yangtze River[J]. Environmental Chemistry, 2012, 31(7): 1003-1008.
Citation: CAI Wenliang, XU Xiaoyi, LUO Guyuan, DU Xian. Fluorescence characteristics of dissolved organic matter in the Chongqing section of Yangtze River[J]. Environmental Chemistry, 2012, 31(7): 1003-1008.
shu

长江重庆段溶解性有机物的荧光特性分析

  • 1.

    重庆大学三峡库区生态环境教育部重点实验室, 重庆, 400045

  • 基金项目:

    科技部国际科技合作项目(2007DFA90660)

    国家自然科学基金(41101457)

    重庆市科技攻关计划项目(CSTC, 2006AA7003-1)资助.

Fluorescence characteristics of dissolved organic matter in the Chongqing section of Yangtze River

  • 1.

    Key Laboratory of the Three Gorges Reservoir Region's Eco-environment, Ministry of Education,Chongqing University, Chongqing, 400045, China

  • Fund Project:

  • 摘要: 利用三维荧光光谱(EEMs),并结合平行因子分析(PARAFAC)及主成分分析(PCA),研究了长江重庆段溶解有机物(DOM)的荧光组分特征及其污染来源,并探讨了荧光强度同溶解性有机碳(DOC)及溶解氧(DO)的相关性.结果表明,PARAFAC 模型识别出长江重庆段DOM由2类6个荧光组分组成,即类腐殖质荧光组分C1(350/422 nm)、C4(245,305/395 nm)、C5(260,340/420 nm)、C6(260/480 nm)及类蛋白荧光组分C2(275/300 nm)、C3(227,278/329 nm).在DOM来源组成中,陆源的类腐殖质含量占62.56%,类蛋白物质含量占31.31%.类腐殖质组分的荧光强度同DOC的含量存在明显的线性正相关(r=0.73),类蛋白组分的荧光强度同DO的含量呈明显的线性负相关(r=0.80).EEMs-PARAFAC 不仅可以表征长江重庆段DOM的光谱特征,示踪长江重庆段的有机污染程度,还可以为三峡库区水体保护提供依据.
    Abstract: Excitation-Emission Matrix spectroscopy (EEMs) combined with Parallel Factor Analysis (PARAFAC) and Principal Component Analysis (PCA) was applied to investigate the fluorescence characteristics and pollution source of dissolved organic matter (DOM) in the Chongqing section of Yangtze River. The results indicated that six fluorescence components were identified by PARAFAC, including four fulic-like components C1 (350/422 nm); C4 (245,305/395 nm); C5 (260,340/420 nm); C6 (260/480 nm), and two protein-like components C2 (275/300 nm); C3 (227, 278/329 nm). The contribution rates to the total fluorescence intensity of fulic-like components and protein-like components were 62.56% and 31.31% respectively, suggesting terrestrial sources for DOM. The fluorescence intensity of fulic-like components showed positive linear correlation with the concentration of dissolved organic carbon (DOC). Meanwhile, significantly negative linear correlation was found between the fluorescence intensity of protein-like components and the concentration of dissolved oxygen (DO) in water. The application of EEMs-PARAFAC can not only reveal the DOM characteristic and monitor the variation degree of organic pollution in the Chongqing section of Yangtze River, but also provide evidence for water protection in the Three Gorges Reservoir.
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  • [1] Huguet A, Vacher L, Saubusse S, et al. New insights into the size distribution of fluorescent dissolved organic matter in estuarine waters [J]. Organic Geochemistry, 2010, 41(6): 595-610
    [2] Huguet A, Vacher L, Relexans S, et al. Properties of fluorescent dissolved organic matter in the Gironde Estuary [J]. Organic Geochemistry,2009, 40(6): 706-719
    [3] Chen M, Price R M, Yamashita Y, et al. Comparative study of dissolved organic matter from groundwater and surface water in the Florida coastal Everglades using multi-dimensional spectrofluorometry combined with multivariate statistics [J]. Applied Geochemistry, 2010, 25(6): 872-880
    [4] 韩宇超,郭卫东. 九龙江河口有色溶解有机物的三维荧光光谱特征[J]. 环境科学学报, 2009, 29(3): 641-647
    [5] 宋晓娜,于涛,张远,等. 利用三维荧光技术分析太湖水体溶解性有机质的分布特征及来源[J]. 环境科学学报, 2010(11): 2321-2331
    [6] Guo W, Stedmon C A, Han Y, et al. The conservative and non-conservative behavior of chromophoric dissolved organic matter in Chinese estuarine waters [J]. Marine Chemistry, 2007, 107(3): 357-366
    [7] Gone D L, Seidel J, Batiot C, et al. Using fluorescence spectroscopy EEM to evaluate the efficiency of organic matter removal during coagulation-flocculation of a tropical surface water (Agbo reservoir)[J]. Journal of Hazardous Materials, 2009, 172(2-3): 693-699
    [8] 吴济舟,张稚妍,孙红文. 无机离子对芘与天然溶解性有机质结合系数的影响[J]. 环境化学, 2010,29(6): 1004-1009
    [9] 吉芳英,黎司,周光明,等. 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(1): 233-238
    [10] Stedmon C A, Bro R. Characterizing dissolved organic matter fluorescence with parallel factor analysis: a tutorial [J]. Limnology and Oceanography: Methods, 2008, 6: 572-579
    [11] Yamashita Y, Jaffé R, Maie N, et al. Assessing the dynamics of dissolved organic matter(DOM) in coastal environments by excitation emission matrix fluorescence and parallel factor analysis(EEM-PARAFAC)[J]. Limnology and Oceanography, 2008, 53(4): 1900-1908
    [12] Stedmon C A, Markager S. Tracing the production and degradation of autochthonous fractions of dissolved organic matter by fluorescence analysis [J]. Limnology and Oceanography, 2005, 50(5): 1415-1426
    [13] Stedmon C A, Markager S. Resolving the variability in dissolved organic matter fluorescence in a temperate estuary and its catchment using PARAFAC analysis [J]. Limnology and Oceanography, 2005, 50(2): 686-697
    [14] 郭卫东,黄建平,洪华生,等. 河口区溶解有机物三维荧光光谱的平行因子分析及其示踪特性[J]. 环境科学, 2010(6): 1419-1427
    [15] Yao X, Zhang Y, Zhu G, et al. Resolving the variability of CDOM fluorescence to differentiate the sources and fate of DOM in Lake Taihu and its tributaries [J]. Chemosphere, 2011, 82(2): 145-155
    [16] Coble P G. Characterization of marine and terrestrial DOM in seawater using excitation-emission matrix spectroscopy [J]. Marine Chemistry, 1996, 51(4): 325-346
    [17] 黄昌春,李云梅,王桥,等. 基于三维荧光和平行因子分析法的太湖水体CDOM组分光学特征[J]. 湖泊科学, 2010(3): 375-382
    [18] Baker A. Fluorescence excitation-emission matrix characterization of some sewage-impacted rivers [J]. Environmental Science & Technology, 2001, 35(5): 948-953
    [19] 刘明亮,张运林,秦伯强. 太湖入湖河口和开敞区CDOM吸收和三维荧光特征[J]. 湖泊科学, 2009, 21(2): 234-241
    [20] 岳兰秀,吴丰昌,刘丛强,等. 红枫湖和百花湖天然溶解有机质的分子荧光特征与分子量分布的关系[J]. 科学通报, 2005, 50(24): 2774-2780
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  • 收稿日期:  2011-09-06
蔡文良, 许晓毅, 罗固源, 杜娴. 长江重庆段溶解性有机物的荧光特性分析[J]. 环境化学, 2012, 31(7): 1003-1008.
引用本文: 蔡文良, 许晓毅, 罗固源, 杜娴. 长江重庆段溶解性有机物的荧光特性分析[J]. 环境化学, 2012, 31(7): 1003-1008.
shu
CAI Wenliang, XU Xiaoyi, LUO Guyuan, DU Xian. Fluorescence characteristics of dissolved organic matter in the Chongqing section of Yangtze River[J]. Environmental Chemistry, 2012, 31(7): 1003-1008.
Citation: CAI Wenliang, XU Xiaoyi, LUO Guyuan, DU Xian. Fluorescence characteristics of dissolved organic matter in the Chongqing section of Yangtze River[J]. Environmental Chemistry, 2012, 31(7): 1003-1008.
shu

长江重庆段溶解性有机物的荧光特性分析

  • 1. 重庆大学三峡库区生态环境教育部重点实验室, 重庆, 400045
  • 收稿日期:  2011-09-06
基金项目:

科技部国际科技合作项目(2007DFA90660)

国家自然科学基金(41101457)

重庆市科技攻关计划项目(CSTC, 2006AA7003-1)资助.

摘要: 利用三维荧光光谱(EEMs),并结合平行因子分析(PARAFAC)及主成分分析(PCA),研究了长江重庆段溶解有机物(DOM)的荧光组分特征及其污染来源,并探讨了荧光强度同溶解性有机碳(DOC)及溶解氧(DO)的相关性.结果表明,PARAFAC 模型识别出长江重庆段DOM由2类6个荧光组分组成,即类腐殖质荧光组分C1(350/422 nm)、C4(245,305/395 nm)、C5(260,340/420 nm)、C6(260/480 nm)及类蛋白荧光组分C2(275/300 nm)、C3(227,278/329 nm).在DOM来源组成中,陆源的类腐殖质含量占62.56%,类蛋白物质含量占31.31%.类腐殖质组分的荧光强度同DOC的含量存在明显的线性正相关(r=0.73),类蛋白组分的荧光强度同DO的含量呈明显的线性负相关(r=0.80).EEMs-PARAFAC 不仅可以表征长江重庆段DOM的光谱特征,示踪长江重庆段的有机污染程度,还可以为三峡库区水体保护提供依据.

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