TU Darmstadt / ULB / TUbiblio

Accumulation of polycyclic aromatic hydrocarbons in rural soils based on mass balances at the catchment scale

Gocht, T. and Ligouis, B. and Hinderer, Matthias and Grathwohl, P. (2007):
Accumulation of polycyclic aromatic hydrocarbons in rural soils based on mass balances at the catchment scale.
In: Environmental toxicology and chemistry, pp. 591-600, 26, [Article]

This is the latest version of this item.

Abstract

Polycyclic aromatic hydrocarbons (PAHs) are hydrophobic organic pollutants that are ubiquitously distributed in the environment at relatively high concentrations. In our study we investigated the long-term fate of atmospheric PAHs in soils of rural areas, resulting from diffuse pollution based on mass balances at the catchment scale. By determining PAHs in several environmental compartments, estimates of soil storages and water fluxes were made and compared with atmospheric deposition. The results indicate that more than 90% of the incoming PAHs remain in the catchments and accumulate in the topsoils. Furthermore, revolatilization of PAHs from soils and degradation in the soils is very limited, resulting in ongoing accumulation in topsoils, in particular for low-volatile PAHs. Combustion-derived carbonaceous particles were detected in atmospheric deposition as well as in the soil samples. Since these particles are very strong adsorbents, they are suspected to play a key role in the environmental fate of the diffuse distributed PAHs.

Item Type: Article
Erschienen: 2007
Creators: Gocht, T. and Ligouis, B. and Hinderer, Matthias and Grathwohl, P.
Title: Accumulation of polycyclic aromatic hydrocarbons in rural soils based on mass balances at the catchment scale
Language: English
Abstract:

Polycyclic aromatic hydrocarbons (PAHs) are hydrophobic organic pollutants that are ubiquitously distributed in the environment at relatively high concentrations. In our study we investigated the long-term fate of atmospheric PAHs in soils of rural areas, resulting from diffuse pollution based on mass balances at the catchment scale. By determining PAHs in several environmental compartments, estimates of soil storages and water fluxes were made and compared with atmospheric deposition. The results indicate that more than 90% of the incoming PAHs remain in the catchments and accumulate in the topsoils. Furthermore, revolatilization of PAHs from soils and degradation in the soils is very limited, resulting in ongoing accumulation in topsoils, in particular for low-volatile PAHs. Combustion-derived carbonaceous particles were detected in atmospheric deposition as well as in the soil samples. Since these particles are very strong adsorbents, they are suspected to play a key role in the environmental fate of the diffuse distributed PAHs.

Journal or Publication Title: Environmental toxicology and chemistry
Volume: 26
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Earth Science > Applied Sedimentary Geology
Date Deposited: 17 Jun 2015 06:51
License: [undefiniert]
Export:

Available Versions of this Item

  • Accumulation of polycyclic aromatic hydrocarbons in rural soils based on mass balances at the catchment scale. (deposited 17 Jun 2015 06:51) [Currently Displayed]

Optionen (nur für Redakteure)

View Item View Item