2019
DOI: 10.3390/s19184016
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Fluorescence Characteristics of Dissolved Organic Matter (DOM) in Percolation Water and Lateral Seepage Affected by Soil Solution (S-S) in a Lysimeter Test

Abstract: : The composition and structure of dissolved organic matter (DOM) are sensitive indicators that guide the water infiltration process in soil. The DOM chemical composition in seepage affects river water quality and changes soil organic matter (SOM). In this lysimeter test study, fluorescence spectra and optical indices were used to examine the interaction between the percolation water (P-W) and leachate water (L-W) DOMs affected by the soil solution (S-S). The L-W DOM had a higher aromaticity (SUVA254), average… Show more

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Cited by 13 publications
(14 citation statements)
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“…Table 1 lists the values of SUVA 254 , BIX, and FI for bulk and size-fractioned AEOM solutions. The bulk AEOM optical indicators were within the ranges of reported values in the soil solution [2,[9][10][11]35,36,43]. The SUVA 254 is positively correlated with the aromatic content [27,28].…”
Section: Optical Indicatorssupporting
confidence: 62%
See 1 more Smart Citation
“…Table 1 lists the values of SUVA 254 , BIX, and FI for bulk and size-fractioned AEOM solutions. The bulk AEOM optical indicators were within the ranges of reported values in the soil solution [2,[9][10][11]35,36,43]. The SUVA 254 is positively correlated with the aromatic content [27,28].…”
Section: Optical Indicatorssupporting
confidence: 62%
“…The textures of the soil samples were classified as loam and silty loam soils. The basic soil properties of pH, EC, and CEC were similar to uncontaminated farmland soil but the TOC contents of the paddy soil were higher than those of uncontaminated farmland soil [4,[35][36][37][38][39]. The total Cu concentrations were analyzed with an aqua regia digestion method and measured by flame atomic absorption spectrometry (Hitachi, Tokyo, Z-2300).…”
Section: Soil Sampling Treatment and Measurementmentioning
confidence: 99%
“…The high δ 13 C DIC in the region also supported this view. BIX of cluster II could be used as an indicator of DOM traceability in water (Chiu et al, 2019), where high values (>0.8) corresponded to DOM of in situin-situ origin, while low BIX (<0.8) indicated allochthonous origin (Catalán, 2014). In this study, the blue clustering stations (S9-S16) were mainly concentrated in the southern bay, and the water samples of BIX between 1.1 and 1.19 were mainly distributed here (Figure S1), implying the that highest-value area of BIX was concentrated in the southern bay.…”
Section: Distributions Of Fluorescent Dissolved Organic Mattermentioning
confidence: 99%
“…The P I,n region is located at a short emission wavelength having loose, simple aromatic proteins. The P II,n region is located relative to a long emission wavelength having condensed simple aromatic proteins [52,53]. The HHS had a relatively high, short emission wavelength protein-like substance, but LHS had a relatively high, long emission wavelength protein-like substance.…”
Section: Fluorescence Eem and Fluorescence Regional Integration (Fri)mentioning
confidence: 99%