Details
| Original language | English |
|---|---|
| Pages (from-to) | 1668-1680 |
| Number of pages | 13 |
| Journal | Eurasian soil science |
| Volume | 54 |
| Issue number | 11 |
| Early online date | 29 Nov 2021 |
| Publication status | Published - Nov 2021 |
Abstract
Abstract: The soil organic matter (SOM) is searched for the biomarkers and specific features associated with the effect of wildfires by the case study of peat soil, Rheic Hemic Histosol (Lignic), in the south of the middle taiga of the Komi Republic. It is shown that fires considerably influence the peat organic matter. Pyrogenic activity is assessed according to the content of charcoal particles. SOM is examined using solid-state 13C-NMR spectroscopy to determine the concentrations of polycyclic aromatic hydrocarbons (PAHs) and benzene polycarboxylic acids (BPCAs). The used methods allow for diagnosing the effects of wildfires on the SOM composition. In the horizons with the signs of pyrogenesis, the share of carbon represented by aromatic fragments increases as well as the PAH concentration, mainly at the expense of naphthalene, phenanthrene, and chrysene. The carbon stock of pyrogenically modified compounds, amounting to 4.4 kg/m2, is for the first time assessed in the European north based on the BPCA content. The characteristics of pyrogenically changed organic compounds and their fragments obtained by different methods correlate well: the Pearson coefficient for the correlation of the carbon content in aromatic compounds (Caryl) with total BPCA content is R = 0.84 (p < 0.05) and with individual BPCAs, R = 0.81–0.90 (p < 0.05).
Keywords
- BPCAs, Histosols, NMR, PAHs, peat, PyC, wildfires
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Soil Science
- Earth and Planetary Sciences(all)
- Earth-Surface Processes
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In: Eurasian soil science, Vol. 54, No. 11, 11.2021, p. 1668-1680.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Comparison of the Methods for Determining Pyrogenically Modified Carbon Compounds
AU - Dymov, A. A.
AU - Startsev, V. V.
AU - Gorbach, N. M.
AU - Pausova, I. N.
AU - Gabov, D. N.
AU - Donnerhack, O.
N1 - Funding Information: The work was supported by the Russian Foundation for Basic Research (project no. 19-29-05111mk) and German Academic Exchange Service, DAAD (project no. 91760908).
PY - 2021/11
Y1 - 2021/11
N2 - Abstract: The soil organic matter (SOM) is searched for the biomarkers and specific features associated with the effect of wildfires by the case study of peat soil, Rheic Hemic Histosol (Lignic), in the south of the middle taiga of the Komi Republic. It is shown that fires considerably influence the peat organic matter. Pyrogenic activity is assessed according to the content of charcoal particles. SOM is examined using solid-state 13C-NMR spectroscopy to determine the concentrations of polycyclic aromatic hydrocarbons (PAHs) and benzene polycarboxylic acids (BPCAs). The used methods allow for diagnosing the effects of wildfires on the SOM composition. In the horizons with the signs of pyrogenesis, the share of carbon represented by aromatic fragments increases as well as the PAH concentration, mainly at the expense of naphthalene, phenanthrene, and chrysene. The carbon stock of pyrogenically modified compounds, amounting to 4.4 kg/m2, is for the first time assessed in the European north based on the BPCA content. The characteristics of pyrogenically changed organic compounds and their fragments obtained by different methods correlate well: the Pearson coefficient for the correlation of the carbon content in aromatic compounds (Caryl) with total BPCA content is R = 0.84 (p < 0.05) and with individual BPCAs, R = 0.81–0.90 (p < 0.05).
AB - Abstract: The soil organic matter (SOM) is searched for the biomarkers and specific features associated with the effect of wildfires by the case study of peat soil, Rheic Hemic Histosol (Lignic), in the south of the middle taiga of the Komi Republic. It is shown that fires considerably influence the peat organic matter. Pyrogenic activity is assessed according to the content of charcoal particles. SOM is examined using solid-state 13C-NMR spectroscopy to determine the concentrations of polycyclic aromatic hydrocarbons (PAHs) and benzene polycarboxylic acids (BPCAs). The used methods allow for diagnosing the effects of wildfires on the SOM composition. In the horizons with the signs of pyrogenesis, the share of carbon represented by aromatic fragments increases as well as the PAH concentration, mainly at the expense of naphthalene, phenanthrene, and chrysene. The carbon stock of pyrogenically modified compounds, amounting to 4.4 kg/m2, is for the first time assessed in the European north based on the BPCA content. The characteristics of pyrogenically changed organic compounds and their fragments obtained by different methods correlate well: the Pearson coefficient for the correlation of the carbon content in aromatic compounds (Caryl) with total BPCA content is R = 0.84 (p < 0.05) and with individual BPCAs, R = 0.81–0.90 (p < 0.05).
KW - BPCAs
KW - Histosols
KW - NMR
KW - PAHs
KW - peat
KW - PyC
KW - wildfires
UR - http://www.scopus.com/inward/record.url?scp=85120178893&partnerID=8YFLogxK
U2 - 10.1134/S1064229321110065
DO - 10.1134/S1064229321110065
M3 - Article
AN - SCOPUS:85120178893
VL - 54
SP - 1668
EP - 1680
JO - Eurasian soil science
JF - Eurasian soil science
SN - 1064-2293
IS - 11
ER -