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	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; Resolving Excitation Emission Matrix Spectroscopy of Estuarine CDOM with Parallel Factor Analysis and Its Application in Organic Pollution Monitoring
	郭卫东 ; 黄建平 ; 洪华生 ; 徐静 ; 邓荀
	2010
关键词	有色溶解有机物 三维荧光光谱 平行因子分析 河口行为 有机污染 九龙江口 chromophoric dissolved organic matter ( CDOM ) excitation-emission matrix spectroscopy ( EEMs ) parallel factor analysis ( PARAFAC) estuarine behavior organic pollution Jiulong Estuary
英文摘要	[摘要:利用激发发射矩阵荧光光谱(EEMs) 并结合平行因子分析( PARAFAC) ，研究了九龙江口有色溶解有机物( CDOM) 的荧光组分特征及其河口动力学行为，并探讨其作为河口区有机污染示踪指标的可行性. 利用PARAFAC 模型识别出九龙江口CDOM 由2 类4 个荧光组分组成，即类腐殖质荧光组分C1 ( 240，310 /382 nm)、C2 ( 230，250，340 /422 nm)、C4 ( 260，390 /482 nm) 及类蛋白质荧光组分C3(225，275 /342 nm) . 模型结果表明，传统寻峰法指认的短波类腐殖质A 峰区域(240 ～ 290 /380 ～480 nm) 实际上并非一个单独的荧光峰，而是若干荧光组分的组合，并且它与传统上指认的长波区海源类腐殖质M 峰、陆源类腐殖质C 峰之间存在内在联系. 包含M 峰的C1 组分在河口区随盐度增加呈稀释降低趋势，表明M 峰并不能被认为是海洋来源的专有特征峰. 类腐殖质组分C1 和C2 在盐度< 6 的河口最大浑浊带区表现出一定的添加行为，之后在河口混合过程中呈 保守行为，而类腐殖质荧光组分C4 则在整个河口混合过程中都呈保守行为. 类蛋白质荧光组分C3 在河口混合过程中呈不保守行为，并且在总荧光组分中所占比例在高盐度区呈上升趋势. EEM-PARAFAC 不仅可示踪九龙江不同支流DOM 的特征，并且还可很好地示踪九龙江口的有机污染程度.]、[Abstract:The distribution and estuarine behavior of fluorescent components of chromophoric dissolved organic matter ( CDOM) from Jiulong Estuary were determined by fluorescence excitation emission matrix spectroscopy (EEMs) combined with parallel factor analysis ( PARAFAC) . The feasibility of these components as tracers for organic pollution in estuarine environments was also evaluated. Four separate fluorescent components were identified by PARAFAC，including three humic-like components ( C1: 240，310 /382 nm; C2: 230，250，340 /422 nm; C4: 260，390 /482 nm) and one protein-like components (C3: 225，275 /342 nm) . These results indicated that UV humic-like peak A area designated by traditional“peak-picking method”was not a single peak but actually a combination of several fluorescent components，and it also had inherent links to so-called marine humic-like peak M or terrestrial humic-like peak C. Component C2 which include peak M decreased with increase of salinity in Jiulong Estuary，demonstrating that peak M can not be thought as the specific indicator of the“marine”humic-like component. Two humic-like components C1 and C2 showed additional behavior in the turbidity maximum region ( salinity < 6 ) and then conservative mixing behavior for the rest estuarine region，while humic-like components C4 showed conservative mixing behavior for the whole estuarine region. However，the protein-like component C3 showed nonconservative mixing behavior， suggesting it had autochthonous estuarine origin. EEMs-PARAFAC can provide fluorescent fingerprint to differentiate the DOM features for three tributaries of Jiulong River. The observed linear relationships between humic-like components and absorption coefficient a(280) with chemical oxygen demand (COD) and biological oxygen demand(BOD5 ) suggest that the optical properties of CDOM may provide a fast in-situ way to monitor the variation of the degree of organic pollution in estuarine environments.]; 国家自然科学基金项目( 40810069004， 40776041， 40676046) ;新世纪优秀人才支持计划项目
语种	中文
出版者	《环境科学》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/1130]
专题	海发院－已发表论文
推荐引用方式 GB/T 7714	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, Resolving Excitation Emission Matrix Spectroscopy of Estuarine CDOM with Parallel Factor Analysis and Its Application in Organic Pollution Monitoring[J],2010.
APA	郭卫东,黄建平,洪华生,徐静,&邓荀.(2010).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..
MLA	郭卫东,et al."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".(2010).

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