| 周村水库四季变化过程中水体溶解性有机物的分布与光谱特征 |
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| 引用本文： | 周石磊,孙悦,张艺冉,黄廷林,丛海兵,崔建升,李再兴,罗晓.周村水库四季变化过程中水体溶解性有机物的分布与光谱特征[J].环境科学学报,2019,39(10):3492-3502. |
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| 作者姓名： | 周石磊 孙悦 张艺冉 黄廷林 丛海兵 崔建升 李再兴 罗晓 |
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| 作者单位： | 河北科技大学环境科学与工程学院,河北省污染防治生物技术实验室,石家庄050018;西安建筑科技大学环境与市政工程学院,西安,710055;扬州大学环境科学与工程学院,扬州,225009 |
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| 基金项目： | 国家自然科学基金（No.51478378，51909056）；国家科技支撑计划项目（No.2012BAC04B02）；河北科技大学引进人才科研启动基金项目（No.1181278） |
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| 摘 要： | 运用三维荧光光谱(EEMs)技术结合平行因子分析法(PARAFAC)及紫外-可见光谱技术(UV-vis),对周村水库四季变化过程中溶解性有机物(DOM)的分布及光谱特征进行了分析.结果表明:周村水库表层水体的氮素(总氮和溶解性总氮)和有机物(总有机碳和溶解性有机碳)的季节性差异显著,并且水库冬、春两季TN较多、TOC较少;表层水体DOM夏、秋两季的吸收系数a_(254)和a_(355)均高于冬、春季节,与有机物的分布相一致;四季的E3/E4均大于3.5,说明DOM以富里酸为主,E2/E3比值表明富里酸占DOM的比例夏、秋两季高于冬、春季节,除夏季外水库表层水体S_R均大于1,显示DOM主要为生物源;三维荧光通过PARAFAC解析出3种组分,分别为类腐殖质(C1)、可见区富里酸(C2)和类蛋白(C3);对3个组分进行相关性分析,结果显示,C1、 C2、C3之间具有显著的相关性(p0.01);DOM的总荧光强度及各组分的荧光强度均呈现出夏秋季高、冬春季低的特征,总荧光强度最大值为夏季的(1993.52±40.84) A.U.,最小值为春季的(1074.10±113.63) A.U.;周村水库各个季节间的DOM总荧光强度和荧光组分C1的荧光强度除夏、秋外均呈现显著的差异性(p0.05),组分C2和C3的荧光强度均呈现显著差异性(p0.05);周村水库四季的DOM生物源指数(BIX)为0.8～1.0,表明水库DOM具有较强的自生源特征,与腐殖程度指标(HIX)的结果相吻合;PCA分析显示,周村水库表层水体DOM的光谱特征差异明显,夏、秋两季的DOM光谱特征相近,冬、春两季的水体DOM特征相似;并且组分C1、C2、C3与DOM特征参数(FI、β:α)及溶解性有机碳(DOC)呈显著相关性(p0.01).通过对周村水库水体四季的DOM光谱特征进行研究,可以进一步分析水库水体的有机物污染特征,并为水库水质管理提供技术支持.
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| 关 键 词： | 溶解有机质(DOM) 周村水库 光谱特征 紫外-可见光谱 三维荧光光谱 |
| 收稿时间： | 2019/6/25 0:00:00 |
| 修稿时间： | 2019/8/14 0:00:00 |
Impact of seasonal variations on distribution and spectral characteristics of dissolved organic matter in Zhoucun Reservoir |
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| ZHOU Shilei,SUN Yue,ZHANG Yiran,HUANG Tinglin,CONG Haibing,CUI Jiansheng,LI Zaixing and LUO Xiao.Impact of seasonal variations on distribution and spectral characteristics of dissolved organic matter in Zhoucun Reservoir[J].Acta Scientiae Circumstantiae,2019,39(10):3492-3502. |
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| Authors: | ZHOU Shilei SUN Yue ZHANG Yiran HUANG Tinglin CONG Haibing CUI Jiansheng LI Zaixing and LUO Xiao |
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| Institution: | Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018,Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018,Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018,School of Environmental and Municipal Engineering, Xi''an University of Architecture and Technology, Xi''an 710055,Department of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009,Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018,Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018 and Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018 |
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| Abstract: | |
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| Keywords: | dissolved organic matter(DOM) Zhoucun Reservoir spectral characteristic UV-vis spectrum excitation emission matrix spectroscopy(EEMs) |
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