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Spectroscopic Characteristics of Dissolved Organic Matter in Afforestation Forest Soil of Miyun District, Beijing.

Gao SJ, Zhao C, Shi ZH, Zhong J, Liu JG, Li JQ - J Anal Methods Chem (2016)

Bottom Line: The results suggested that the texture of soil sample was sandy.It can be included that afforestation can improve the soil quality to some extent, which can be partly reflected from the indexes like TOC, TN, TP, K(+), MBC, and DOC.And the characterization of DOM implied that UV humic-like substances were the major fluorophores components in the DOM of the soil samples, which consisted of aliphatic chains and aromatic components with carbonyl, carboxyl, and hydroxyl groups.

View Article: PubMed Central - PubMed

Affiliation: College of Forestry, Beijing Forestry University, Beijing 100083, China; Key Laboratory of Urban Stormwater System, Beijing University of Civil Engineering and Architecture, Beijing 100044, China.

ABSTRACT
In this study, soil samples collected from different plain afforestation time (1 year, 4 years, 10 years, 15 years, and 20 years) in Miyun were characterized, including total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), available K (K(+)), microbial biomass carbon (MBC), and dissolved organic carbon (DOC). The DOM in the soil samples with different afforestation time was further characterized via DOC, UV-Visible spectroscopy, excitation-emission matrix (EEM) fluorescence spectroscopy, and (1)H NMR spectroscopy. The results suggested that the texture of soil sample was sandy. The extracted DOM from soil consisted mainly of aliphatic chains and only a minor aromatic component. It can be included that afforestation can improve the soil quality to some extent, which can be partly reflected from the indexes like TOC, TN, TP, K(+), MBC, and DOC. And the characterization of DOM implied that UV humic-like substances were the major fluorophores components in the DOM of the soil samples, which consisted of aliphatic chains and aromatic components with carbonyl, carboxyl, and hydroxyl groups.

No MeSH data available.


Related in: MedlinePlus

UV-Visible spectra of the soil samples.
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Related In: Results  -  Collection


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fig2: UV-Visible spectra of the soil samples.

Mentions: As an efficient tool, the UV-Visible spectroscopy is employed to evaluate the composition and structure of DOM [27, 28]. As illustrated in Figure 2, all the UV-Visible spectrum absorbance of the five samples decreased with the wavelength, which can be found in other studies [5, 24, 29, 30]. Some small shoulder peaks can be found in the region of 250–300 nm, which might be contributed by phenolic, aromatic carboxylic, and polycyclic aromatic compounds (π → π∗ transition) [31].


Spectroscopic Characteristics of Dissolved Organic Matter in Afforestation Forest Soil of Miyun District, Beijing.

Gao SJ, Zhao C, Shi ZH, Zhong J, Liu JG, Li JQ - J Anal Methods Chem (2016)

UV-Visible spectra of the soil samples.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4940562&req=5

fig2: UV-Visible spectra of the soil samples.
Mentions: As an efficient tool, the UV-Visible spectroscopy is employed to evaluate the composition and structure of DOM [27, 28]. As illustrated in Figure 2, all the UV-Visible spectrum absorbance of the five samples decreased with the wavelength, which can be found in other studies [5, 24, 29, 30]. Some small shoulder peaks can be found in the region of 250–300 nm, which might be contributed by phenolic, aromatic carboxylic, and polycyclic aromatic compounds (π → π∗ transition) [31].

Bottom Line: The results suggested that the texture of soil sample was sandy.It can be included that afforestation can improve the soil quality to some extent, which can be partly reflected from the indexes like TOC, TN, TP, K(+), MBC, and DOC.And the characterization of DOM implied that UV humic-like substances were the major fluorophores components in the DOM of the soil samples, which consisted of aliphatic chains and aromatic components with carbonyl, carboxyl, and hydroxyl groups.

View Article: PubMed Central - PubMed

Affiliation: College of Forestry, Beijing Forestry University, Beijing 100083, China; Key Laboratory of Urban Stormwater System, Beijing University of Civil Engineering and Architecture, Beijing 100044, China.

ABSTRACT
In this study, soil samples collected from different plain afforestation time (1 year, 4 years, 10 years, 15 years, and 20 years) in Miyun were characterized, including total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), available K (K(+)), microbial biomass carbon (MBC), and dissolved organic carbon (DOC). The DOM in the soil samples with different afforestation time was further characterized via DOC, UV-Visible spectroscopy, excitation-emission matrix (EEM) fluorescence spectroscopy, and (1)H NMR spectroscopy. The results suggested that the texture of soil sample was sandy. The extracted DOM from soil consisted mainly of aliphatic chains and only a minor aromatic component. It can be included that afforestation can improve the soil quality to some extent, which can be partly reflected from the indexes like TOC, TN, TP, K(+), MBC, and DOC. And the characterization of DOM implied that UV humic-like substances were the major fluorophores components in the DOM of the soil samples, which consisted of aliphatic chains and aromatic components with carbonyl, carboxyl, and hydroxyl groups.

No MeSH data available.


Related in: MedlinePlus