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| Web URL(s): | https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2002.4300
Last checked: 02/28/2024
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https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2002.4300
Last checked: 02/28/2024
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| Publication Type:
| Refereed |
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| Author(s): | Krauss, Martin;
Wilcke, Wolfgang |
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| Author Affiliation: | Institute of Soil Science and Soil Geography, University of Bayreuth, Bayreuth, Germany |
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| Title: | Sorption strength of persistent organic pollutants in particle-size fractions of urban soils |
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| Source: | Soil Science Society of America Journal. Vol. 66, No. 2, March/April 2002, p. 430-437. |
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| Publishing Information: | Madison, WI: Soil Science Society of America |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Sorption; Pollutants; Particle size; Urban soils; Pesticide degradation; Soil partition coefficient; Chemical properties of soil; Hydrocarbons
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| Abstract/Contents: | "The bioavailability of persistent organic pollutants in soils depends on their sorption strength that may vary among different pools. We hypothesized that polycyclic aromatic hydrocarbons (PAHs) and poly-chlorinated biphenyls (PCBs) had different soil organic C-water partition coefficients (KOC) among particle-size fractions. We determined the concentrations of 20 PAHs and 12 PCBs in coarse-sand, fine-sand, silt, and clay fractions of 11 urban topsoils (0-5cm). The KOC values were determined using sequential extraction with methanol-water mixtures (35 and 65% methanol) at 60° C. The Σ20 PAHs concentrations ranged from 0.3 to 186mg kg-1, the Σ12 PCBs concentrations from 1.2 to 158 μg kg-1. In most soils, the PAH concentrations decreased in the order, silt>clay≥fine sand>coarse sand, and those of the PCBs in the order clay>silt≥fine sand>coarse sand. The distribution of PAHs among particle-size fractions was more heterogeneous than reported in the literature because the soils received PAH-contaminated wastes (ashes, slags, rubble) with varying texture. In all soils, the proportions of two- or three-ring PAHs decreased with decreasing particle size, indicating that the PAH mixture was increasingly altered. The KOC values of the PAHs were three to 10 times higher than those of the PCBs with similar octanol-water partition coefficients (KOW). The mean KOC values of all individual PAHs were highest in silt. For all individual PCBs, mean KOC values were highest in clay. The KOC values of PAHs and PCBs varied up to a factor of 100 among the studied soils and particle-size fractions. Particle-size fractions with highest PAH and PCB concentrations also showed highest KOC values indicating low bioavailability." |
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| Language: | English |
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| References: | 36 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Krauss, M., and W. Wilcke. 2002. Sorption strength of persistent organic pollutants in particle-size fractions of urban soils. Soil Sci. Soc. Am. J. 66(2):p. 430-437. |
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| Web URL(s):
https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2002.4300
Last checked: 02/28/2024
Access conditions: Item is within a limited-access website
https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2002.4300
Last checked: 02/28/2024
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 590 .S65 |
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