Details
| Original language | English |
|---|---|
| Pages (from-to) | 24-31 |
| Number of pages | 8 |
| Journal | Environmental Science and Pollution Research |
| Volume | 3 |
| Issue number | 1 |
| Publication status | Published - Mar 1996 |
| Externally published | Yes |
Abstract
The behavior of 20 PAH in the organic layers of a L mull, an Of mull and a mor was assessed by a combined approach of a soil profile study, and the analysis of particle-size separates. Increasing PAH concentrations with depth in the mor profile (L, 866 μg kg-1; Of, 2902 μg kg-1; Oh, 10489 pg kg-1) were assigned to selective enrichment during organic matter decomposition. PAH were further highly enriched within the finer separates. For the L horizons, significant positive correlations were established between the enrichment of individual PAH (as observed from the decomposition gradient between the >2-mm fraction and the <0.05-mm fraction), and the KOW, for each compound. The slope of the regression line, m, described the degree of differentiation between low- and high-molecular PAH during litter decomposition. Since m was greatest in the most biologically active humus type (L mull, 0.33) and smallest in the most inactive (mor, 0.20), microbial breakdown was assumed as the dominating process for this differentiation. The results also indicated that decomposition processes had already taken place in the L horizons, leading to morphological and chemical changes of organic matter, and to an enrichment of high molecular PAH.
Keywords
- Forest soils, Microbial decomposition, Organic layers, PAH differentiation, PAH enrichment, Particle size separates
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Chemistry
- Environmental Science(all)
- Pollution
- Environmental Science(all)
- Health, Toxicology and Mutagenesis
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In: Environmental Science and Pollution Research, Vol. 3, No. 1, 03.1996, p. 24-31.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Polycyclic Aromatic Hydrocarbons (PAH) in Different Forest Humus Types
AU - Pichler, Martin
AU - Guggenberger, Georg
AU - Hartmann, Robert
AU - Zech, Wolfgang
PY - 1996/3
Y1 - 1996/3
N2 - The behavior of 20 PAH in the organic layers of a L mull, an Of mull and a mor was assessed by a combined approach of a soil profile study, and the analysis of particle-size separates. Increasing PAH concentrations with depth in the mor profile (L, 866 μg kg-1; Of, 2902 μg kg-1; Oh, 10489 pg kg-1) were assigned to selective enrichment during organic matter decomposition. PAH were further highly enriched within the finer separates. For the L horizons, significant positive correlations were established between the enrichment of individual PAH (as observed from the decomposition gradient between the >2-mm fraction and the <0.05-mm fraction), and the KOW, for each compound. The slope of the regression line, m, described the degree of differentiation between low- and high-molecular PAH during litter decomposition. Since m was greatest in the most biologically active humus type (L mull, 0.33) and smallest in the most inactive (mor, 0.20), microbial breakdown was assumed as the dominating process for this differentiation. The results also indicated that decomposition processes had already taken place in the L horizons, leading to morphological and chemical changes of organic matter, and to an enrichment of high molecular PAH.
AB - The behavior of 20 PAH in the organic layers of a L mull, an Of mull and a mor was assessed by a combined approach of a soil profile study, and the analysis of particle-size separates. Increasing PAH concentrations with depth in the mor profile (L, 866 μg kg-1; Of, 2902 μg kg-1; Oh, 10489 pg kg-1) were assigned to selective enrichment during organic matter decomposition. PAH were further highly enriched within the finer separates. For the L horizons, significant positive correlations were established between the enrichment of individual PAH (as observed from the decomposition gradient between the >2-mm fraction and the <0.05-mm fraction), and the KOW, for each compound. The slope of the regression line, m, described the degree of differentiation between low- and high-molecular PAH during litter decomposition. Since m was greatest in the most biologically active humus type (L mull, 0.33) and smallest in the most inactive (mor, 0.20), microbial breakdown was assumed as the dominating process for this differentiation. The results also indicated that decomposition processes had already taken place in the L horizons, leading to morphological and chemical changes of organic matter, and to an enrichment of high molecular PAH.
KW - Forest soils
KW - Microbial decomposition
KW - Organic layers
KW - PAH differentiation
KW - PAH enrichment
KW - Particle size separates
UR - http://www.scopus.com/inward/record.url?scp=0030047839&partnerID=8YFLogxK
U2 - 10.1007/BF02986810
DO - 10.1007/BF02986810
M3 - Article
AN - SCOPUS:0030047839
VL - 3
SP - 24
EP - 31
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
SN - 0944-1344
IS - 1
ER -