![]() He W, Lee J, Hur J (2016) Anthropogenic signature of sediment organic matter probed by UV-Visible and fluorescence spectroscopy and the association with heavy metal enrichment. He X, Xi B, Wei Z et al (2011) Spectroscopic characterization of water extractable organic matter during composting of municipal solid waste. Habibul N, Chen W (2018) Structural response of humic acid upon binding with lead: a spectroscopic insight. Spectrochim Acta A Mol Biomol Spectrosc 104:280–286 Guo X, Yuan D, Jiang J (2013) Detection of dissolved organic matter in saline–alkali soils using synchronous fluorescence spectroscopy and principal component analysis. Chemosphere 48:59–68ĭave HN, Mashru RC, Thakkar AR (2007) Simultaneous determination of salbutamol sulphate, bromhexine hydrochloride and etofylline in pharmaceutical formulations with the use of four rapid derivative spectrophotometric methods. Environ Sci Technol 36(7):1377–1382Ĭhen J, Gu B, Leboeuf E, Pan H, Dai S (2002) Spectroscopic characterization of the structural and functional properties of natural organic matter fractions. Water Res 36(1):189–195īaker A (2002b) Fluorescence excitation-emission matrix characterization of river waters impacted by a tissue mill effluent. Atmos Chem Phys 9:5949–5962īaker A (2002a) Fluorescence properties of some farm wastes: implications for water quality monitoring. Environ Int 59:201–207īaduel C, Voisin D, Jaffrezo J (2009) Comparison of analytical methods for HULIS measurements in atmospheric particles. Bioresour Technol 102:4495–4500Īl-Reasi HA, Wood CM, Smith DS (2013) Characterization of freshwater natural dissolved organic matter (DOM): mechanistic explanations for protective effects against metal toxicity and direct effects on organisms. Talanta 80(2):880–888Īlbrecht R, Petit J, Gérard T (2011) Comparison between UV spectroscopy and nirs to assess humification process during sewage sludge and green wastes co-composting. The results of the present study demonstrate that UV-visible spectroscopy and SFS combined with 2D-COS are useful methods to characterize structural composition of DOM from urban black and stinky rivers so as to investigate their pollution status.Ībdelal A, El-Enany N, Belal F (2009) Simultaneous determination of sulpiride and its alkaline degradation product by second derivative synchronous fluorescence spectroscopy. The variation order in Huangnihe River was MHLF → PLF → FLF too, and the PLF was consistent with the carboxylic groups and aromatic groups. The variation order in Nanxiaohe River was MHLF → PLF → FLF, and the MHLF was consistent with the aromatic groups, phenolic groups, carboxylic groups, and microbial products. Based on the 2D-COS of the SFS and UV-visible spectra, the variation order of DOM fractions in Puhe River was PLF → MHLF → FLF, and the PLF was consistent with the phenolic groups, aromatic groups, and carboxylic groups, but the adverse trend with the microbial products. However, molecular mass of DOM in Puhe River was the lowest, followed by Huangnihe River and Nanxiaohe River. Humification degree of DOM was the highest in Puhe River, followed by Huangnihe River and Nanxiaohe River. The PLF and MHLF were dominated in DOM fractions in the rivers, and the average content of the PLF was the highest in Nanxiaohe River. DOM in three rivers was composed of protein-like fluorescent (PLF), microbial humus-like fluorescent (MHLF), fulvic-like fluorescent (FLF), and humic-like fluorescent components, which were relative to aromatic groups, phenolic groups, carboxylic groups, and microbial products. Water samples were collected from the mainstream and two tributaries (Nanxiaohe River and Huangnihe River). UV-visible spectroscopy and synchronous fluorescence spectroscopy (SFS) combined with two-dimensional correlation spectroscopy (2D-COS) were applied for extracting fluorescence components, tracing organic functional groups, and revealing variations of dissolved organic matter (DOM) in Puhe River.
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