Spectroscopy and Spectral Analysis, Volume. 42, Issue 5, 1642(2022)
Characterization and Analysis of Dissolved Organic Matter in Different Types of Natural Water in Wuhan by Three-Dimensional Fluorescence Spectra
Figures & Tables(7)
Fig. 2. Nomalized fluorescence in tegral volume(a)and the proportion of each fluorescence region integral of water samples(b)
Table 1. Basic water quality parameters of samples in Wuhan
View tableView in ArticleTable 1. Basic water quality parameters of samples in Wuhan
编号 地点 水体
类型经度 纬度 pH 温度/
℃电导率/
(μs·cm-1)氧化还原
电位/mVTOC/
(mg·L-1)NP/
(mg·L-1)WH1 罗家路 河流 114.358 457 30.627 075 8.33 26.4 344 107.8 2.22 WH2 楚河 河流 114.342 496 30.565 726 8.34 28.1 451 135.6 4.67 WH3 东湖泵桥 河流 114.220 993 30.476 527 8.25 28.4 395 132.5 3.92 0.90 WH4 青菱河 河流 114.278 507 30.471 810 7.71 27.6 554 133.2 4.26 1.20 WH5 巡司河 河流 114.317 393 30.493 007 7.60 27.9 550 146.0 3.99 WH6 东湖 湖泊 114.378 548 30.549 925 8.78 29.5 421 129.5 3.91 1.16 WH7 南湖1 湖泊 114.352 346 30.499 002 9.41 32.4 441 109.7 6.53 1.23 WH8 南湖2 湖泊 114.384 141 30.479 411 9.75 32.2 428 96.3 6.45 1.23 WH9 琴断口1 水源水 114.196 299 30.585 394 8.64 28.9 348 120.4 2.53 WH10 琴断口2 雨水 114.198 814 30.582 627 8.65 32.4 538 132.2 5.22 WH11 自来水 自来水 114.138 364 30.628 182 7.60 24.5 567 146.0 2.54
Table 2. Description of fluorescence analysis methods and spectrum parameters
View tableView in ArticleTable 2. Description of fluorescence analysis methods and spectrum parameters
荧光参数 计算方法 指示参数 FI Ex=370 nm时, Em在470 nm处和520 nm处的荧光强度的比值 FI<1.4时, DOM以陆源输入为主; FI>1.9时, DOM以内源输入为主[ 12 ]BIX Ex=310 nm时, Em在380与430 nm处荧光强度的比值 BIX在0.6~0.8范围表示水体DOM生产力较低, 主要为陆源输入, BIX>1时表示DOM主要为藻类或细菌等自生来源(内源)且有机质为新近产生[ 11 ]HIX Ex=254 nm时, Em在435~480和300~345 nm区间荧光峰值面积之比 HIX<3表示腐殖质化程度弱且有新近自身源, 数值越高表明腐殖化程度越高[ 13 ]β:α Ex=310 nm时, Em在380与420~435 nm区间最大荧光强度的比值 β代表新近生成的DOM, α代表降解程度较高的DOM, β:α可反应新生DOM在整体DOM中的占比[ 11 ]
Table 3. Fluorescence index, Autochthonous index, the humification index and Freshness indexof DOM in water samples
View tableView in ArticleTable 3. Fluorescence index, Autochthonous index, the humification index and Freshness indexof DOM in water samples
采样点 WH1 WH2 WH3 WH4 WH5 WH6 WH7 WH8 WH9 WH10 WH11 荧光指数(FI) 1.50 1.73 1.66 1.84 2.17 1.41 1.63 1.76 1.57 1.56 1.03 腐殖化指标(HIX) 1.11 1.37 1.59 1.95 0.27 1.13 1.29 1.42 1.03 1.28 1.11 自生源指标(BIX) 0.93 0.86 0.91 0.94 0.88 0.94 0.92 0.88 0.99 0.86 0.96 新鲜度指数(β:α) 0.93 0.83 0.87 0.89 0.82 0.9 0.89 0.84 0.89 0.83 0.79
Table 4. Correlation analysis of water environmental quality, water quality parameters and fluorescence components
View tableView in ArticleTable 4. Correlation analysis of water environmental quality, water quality parameters and fluorescence components
TP TOC C1 C2 C3 C4 C5 TP 1 0.742 -0.153 -0.053 -0.102 0.740 0.739 TOC 1 0.210 0.305 0.262 0.992 0.988 C1 1 0.986 0.994 0.075 -0.090 C2 1 0.991 0.221 0.042 C3 1 0.164 -0.003 C4 1 0.950 C5 1
Table 5. Temporal variation of DOM composition and proportion in East Lake
View tableView in ArticleTable 5. Temporal variation of DOM composition and proportion in East Lake
采样时间 DOM的组成及占比/% 参考文献 类酪氨酸 类色氨酸 陆源腐殖质 类腐殖酸 类富里酸 微生物代谢物类 2007.09 22.1 37.2 31.2 9.5 [16] 2012.08 32.1~33.5 46.9~49.1 18.8~19.6 [19] 2011—2014 47.9 38.9 13.3 * 2020.06 20.8 22.2 26.3 21.4 9.3 本研究
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Lu BAI, Xiong XU, Quan-zhen LIU, Yan-jun DU, Dong-hong WANG. Characterization and Analysis of Dissolved Organic Matter in Different Types of Natural Water in Wuhan by Three-Dimensional Fluorescence Spectra[J]. Spectroscopy and Spectral Analysis, 2022, 42(5): 1642
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Category: Research Articles
Received: Apr. 15, 2021
Accepted: --
Published Online: Nov. 10, 2022
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