Beurteilung der Lebensraumfunktion von Böden anhand von Bodenwerten und ökotoxikologischen Labortests
type: CreativeWork
description: The goal of this work was the improvement of the assessment of the natural function of soils as a habitat for soil organisms. The first sub-goal was to derive soil values for the path ‘soil – soil organisms’. Using the DIBAEX-method soil values (HC5) were derived separately based on NOEC/EC0-20- and EC30-60-values for soil invertebrates, plants and microbial processes for 8 heavy metals and 4 organic compounds. The calculated values were checked for plausibility according to various parameters. For five of the heavy metals the calculated soil values were plausible for both effect levels, for another two metals the values were plausible with restrictions. For chrome the calculated values were regarded as not plausible and were not considered when further using the soil values in the course of the work. The soil values for the four organic compounds were all plausible with restrictions. The HC5 based on NOEC/EC0-20 data for BaP and the HC5 based on EC30-60 data for PAH were regarded as not plausible and were also not further considered. The second sub-goal was the application of ecotoxicological tests with earthworms and springtails as an example. First, dose-response tests were performed with zinc nitrate and tributyltin oxide in nine natural soils and OECD artificial soil and second, six contaminated soils from different legacy sites were assessed. Earthworm and springtail reproduction tests and earthworm avoidance tests were performed in the laboratory according to internationally standardized ISO guidelines. Additionally, in parallel and in comparison to the earthworm reproduction test the bait lamina method was used as a screening test. The results (e.g., EC50) of the dose-response tests differed between the different soils. The earthworm avoidance test was similar in sensitivity in the tests with zinc nitrate compared to the earthworm reproduction test while the latter was mostly more sensitive in the tests with TBT-O. The bait lamina test was comparable in sens…
abstract: The goal of this work was the improvement of the assessment of the natural function of soils as a habitat for soil organisms. The first sub-goal was to derive soil values for the path ‘soil – soil organisms’. Using the DIBAEX-method soil values (HC5) were derived separately based on NOEC/EC0-20- and EC30-60-values for soil invertebrates, plants and microbial processes for 8 heavy metals and 4 organic compounds. The calculated values were checked for plausibility according to various parameters. For five of the heavy metals the calculated soil values were plausible for both effect levels, for another two metals the values were plausible with restrictions. For chrome the calculated values were regarded as not plausible and were not considered when further using the soil values in the course of the work. The soil values for the four organic compounds were all plausible with restrictions. The HC5 based on NOEC/EC0-20 data for BaP and the HC5 based on EC30-60 data for PAH were regarded as not plausible and were also not further considered. The second sub-goal was the application of ecotoxicological tests with earthworms and springtails as an example. First, dose-response tests were performed with zinc nitrate and tributyltin oxide in nine natural soils and OECD artificial soil and second, six contaminated soils from different legacy sites were assessed. Earthworm and springtail reproduction tests and earthworm avoidance tests were performed in the laboratory according to internationally standardized ISO guidelines. Additionally, in parallel and in comparison to the earthworm reproduction test the bait lamina method was used as a screening test. The results (e.g., EC50) of the dose-response tests differed between the different soils. The earthworm avoidance test was similar in sensitivity in the tests with zinc nitrate compared to the earthworm reproduction test while the latter was mostly more sensitive in the tests with TBT-O. The bait lamina test was comparable in sens…
author: Jänsch, Stephan
language: ger
keywords: info:eu-repo/classification/ddc/570, Bodenmikrobiologie, Bodentiere, Bodenschutz, Deutschland / Bundes-Bodenschutzgesetz, Monitoring, Pflanzen, Umwelttoxikologie, Biowissenschaften, Biologie, Eisenia fetida, Folsomia candida, Köderstreifen, species sensitivity distributions
date published: 2010
date modified: 2026-07-30T19:43:35Z
provider: RWTH Aachen University
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Publikationsserver der RWTH Aachen University