Multi-spectroscopic investigation on the spatial distribution and copper binding ability of sediment dissolved organic matter in Nansi Lake, China

Ren, Haoyu; Ma, Feiyang; Yao, Xin; Shao, Kwang‐Tsao; Yang, Liwei

doi:10.1016/j.jhydrol.2020.125289

Cited by 31 publications

(7 citation statements)

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“…Fluorescence quenching is a popular and powerful method due to its sensitivity, non-destructivity, and simplicity. 22 It occurs when a fluorescent component interacts with a quencher, the fluorescence intensity of the component weakens or disappears. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…18–21 Among them, fluorescence quenching is a popular and powerful method due to its sensitivity, non-destructivity, and simplicity. 22 It has been reported as an efficient method to investigate the interaction mechanism between HOCs and fluorescent substances. 11,16,20 However, the binding sites are easily overlooked when exploring interactions.…”

Section: Introductionmentioning

confidence: 99%

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Insight into the hetero-interactions of 4-nonylphenol with dissolved organic matter: multiple spectroscopic methods, ¹H NMR study and principal component analysis

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Insight into the hetero-interactions of 4-nonylphenol with dissolved organic matter: multiple spectroscopic methods, ¹H NMR study and principal component analysis

et al. 2022

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“…Distribution variation of heavy metals in Nansi Lake might be related to suspended particulate matter, soil erosion and other reasons caused by the SNWTP (Zhuang et al, 2019). Furthermore, our previous research suggested that both the humic-and protein-like substances in the lower lake had a stronger metal-binding compared with the upper lake (Ren et al, 2020). Differences in the metal-binding ability of DOM could affect the migration of heavy metals (Xu et al, 2019).…”

Section: Dom Variation's Enlightenment To the Management Of Heavy Metalsmentioning

confidence: 98%

Characterizing variations of dissolved organic matter (DOM) properties in Nansi Lake: an important reservoir along the eastern route of China’s South-to-North Water Diversion Project

Ren

Yao

et al. 2021

Preprint

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Variations in dissolved organic matter (DOM) quality has far-reaching implications that affect, e.g., aquatic productivity, food web structures, trace element and pollutant transport. In this study, a total of 186 water samples were collected at 62 sites (three points in time within one year) in Nansi Lake. UV-Vis spectra, Synchronous fluorescence (SF) spectra, the excitation-emission matrix and parallel factor analysis (EEM-PARAFAC) were applied to indicate the source and quality of DOM. Water transferring of the eastern route of China’s South-to-North Water Diversion Project had a great influence on the water level of Nansi Lake. Results of SF spectra, EEM-PARAFAC and principal component analysis (PCA) suggested that protein-like substances played a more important role in DOM properties in April and July than October. This result is related to a high fluorescence intensity occurred in April (Fmax=0.72±0.03 in the upper lake and 1.84±0.13 in the lower lake) and July (Fmax=1.10±0.05 in the upper lake and 1.49±0.04 in the lower lake), which might be caused by water transferring from other lakes to Nansi Lake, death and decomposition of submerged plants. At the same time, relatively good correlations were found between humic-like substances, DOC and a254 in April, July and October, which indicated the important contribution of humic-like substances to Nansi Lake. With the completion of the water diversion, the ratio of the fluorescence intensity of component to the total fluorescence intensity (%Fmax) suggested that the proportion of humic-like substances started to increase. And when it came to October, humic-like substances become the main substance in DOM collected from Nansi Lake (%Fmax=66.56%±0.58% in the upper lake and 61.98%±0.99% in the lower lake). Moreover, among the two areas in Nansi Lake, the upper lake always had a higher degree of humification (HIX=2.23±0.06, 2.38±0.11 and 3.10±0.05 in April, July and October, respectively) than the lower lake (HIX=1.06±0.05, 1.68±0.05 and 2.62±0.08 in April, July and October, respectively), which implied extraneous contaminants might have a more important impact on DOM properties in the upper lake.

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“…DOC can be used as an alternative measure of DOM in groundwater [40]. The DOC values in shallow groundwater vary from 0.38±1.89 to 9.90±1.89 mg/L (Table 1), with a mean of 2.49 mg/L.…”

Section: Concentration Of Dissolved Organic Carbon In Shallow Groundw...mentioning

confidence: 99%

Spatial Distribution and Sources of Dissolved Organic Matter in High-Antimony Shallow Groundwater in the Xikuangshan Mine, Hunan, China

Peng¹,

Hao²,

Gu³

2022

Pol. J. Environ. Stud.

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The origin and composition of dissolved organic matter (DOM) is crucial for fate of antimony (Sb) in aquatic systems. However, there are in which DOM compositional properties, that may better explain the biogeochemical process of Sb, have been absent. This study aimed to understand the fraction, spatial distribution, and spectral characteristics of DOM in high-Sb groundwater (commonly: >0.005 mg/L) from the Xikuangshan Mine in Lengshuijiang, Hunan, China, and explore the characteristics of DOM associated with the formation process of high-Sb groundwater. Inductively coupled mass spectrometry and excitation/emission matrix-parallel factor analysis were used to determine the Sb content, DOM composition, and fluorescence characteristics of 25 shallow groundwater samples collected in May 2021. The dissolved organic carbon (DOC) values in the shallow groundwater varied from 0.38±1.89 to 9.90±1.89 mg/L, with a mean of 2.49 mg/L. The DOM consisted of the following four components: C1, terrestrial humus; C2, microbial humus; C3, fulvic acid; and C4, tryptophan. DOM in high-Sb groundwater usually has a high humification index, low biological index, and low fluorescence intensity values. This result will help to understand the effect of DOM on the accumulation and migration of antimony in groundwater during biogeochemical cycling.

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Multi-spectroscopic investigation on the spatial distribution and copper binding ability of sediment dissolved organic matter in Nansi Lake, China

Cited by 31 publications

References 35 publications

Insight into the hetero-interactions of 4-nonylphenol with dissolved organic matter: multiple spectroscopic methods, ¹H NMR study and principal component analysis

Insight into the hetero-interactions of 4-nonylphenol with dissolved organic matter: multiple spectroscopic methods, ¹H NMR study and principal component analysis

Characterizing variations of dissolved organic matter (DOM) properties in Nansi Lake: an important reservoir along the eastern route of China’s South-to-North Water Diversion Project

Spatial Distribution and Sources of Dissolved Organic Matter in High-Antimony Shallow Groundwater in the Xikuangshan Mine, Hunan, China

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Multi-spectroscopic investigation on the spatial distribution and copper binding ability of sediment dissolved organic matter in Nansi Lake, China

Cited by 31 publications

References 35 publications

Insight into the hetero-interactions of 4-nonylphenol with dissolved organic matter: multiple spectroscopic methods, 1H NMR study and principal component analysis

Insight into the hetero-interactions of 4-nonylphenol with dissolved organic matter: multiple spectroscopic methods, 1H NMR study and principal component analysis

Characterizing variations of dissolved organic matter (DOM) properties in Nansi Lake: an important reservoir along the eastern route of China’s South-to-North Water Diversion Project

Spatial Distribution and Sources of Dissolved Organic Matter in High-Antimony Shallow Groundwater in the Xikuangshan Mine, Hunan, China

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Insight into the hetero-interactions of 4-nonylphenol with dissolved organic matter: multiple spectroscopic methods, ¹H NMR study and principal component analysis

Insight into the hetero-interactions of 4-nonylphenol with dissolved organic matter: multiple spectroscopic methods, ¹H NMR study and principal component analysis