PuSH - Publikationsserver des Helmholtz Zentrums München

Export: TXT Text RIS Endnote (RIS) BIB BibTeX
Folberth, C. ; Suhadolc, M.* ; Scherb, H. ; Munch, J.-C. ; Schroll, R.

Batch experiments versus soil pore water extraction--what makes the difference in isoproturon (bio-)availability?

Chemosphere 77, 756-763 (2009)
DOI PMC
Open Access Gold möglich sobald Verlagsversion bei der ZB eingereicht worden ist.
Two approaches to determine pesticide (bio-)availability in soils (i) batch experiments with "extraction with an excess of water" (EEW) and (ii) the recently introduced "soil pore water (PW) extraction" of pesticide incubated soil samples have been compared with regard to the sorption behavior of the model compound isoproturon in soils. A significant correlation between TOC and adsorbed pesticide amount was found when using the EEW approach. In contrast, there was no correlation between TOC and adsorbed isoproturon when using the in situ PW extraction method. Furthermore, sorption was higher at all concentrations in the EEW method when comparing the distribution coefficients (Kd) for both methods. Over all, sorption in incubated soil samples at an identical water tension (-15 kPa) and soil density (1.3 g cm-3) appears to be controlled by a complex combination of sorption driving soil parameters. Iso-proturon bioavailability was found to be governed in different soils by binding strength and availability of sorption sites as well as water content, whereas the dominance of either one of these factors seems to depend on the individual composition and characteristics of the respective soil sample. Using multiple linear regression analysis we obtained furthermore indications that the soil pore structure is affected by the EEW method due to disaggregation, resulting in a higher availability of pesticide sorption sites than in undisturbed soil samples. Therefore, it can be concluded that isoproturon sorption is overestimated when using the EEW method, which should be taken into account when using data from this approach or similar batch techniques for risk assessment analysis.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Scopus
Cited By
Altmetric
3.054
1.990
5
5
Tags
Anmerkungen
Besondere Publikation
Auf Hompepage verbergern

Zusatzinfos bearbeiten
Eigene Tags bearbeiten
Privat
Eigene Anmerkung bearbeiten
Privat
Auf Publikationslisten für
Homepage nicht anzeigen
Als besondere Publikation
markieren
Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter microbial availability; toc; in situ pesticide sorption; saturation of sorption sites; soil pore water; soil extraction; organic-matter; phenylurea herbicides; subcritical water; adsorption; sorption; mineralization; bioavailability; pesticides; desorptio
Sprache
Veröffentlichungsjahr 2009
HGF-Berichtsjahr 2009
ISSN (print) / ISBN 0045-6535
e-ISSN 1879-1298
Zeitschrift Chemosphere
Quellenangaben Band: 77, Heft: 6, Seiten: 756-763 Artikelnummer: , Supplement: ,
Verlag Elsevier
Verlagsort Kidlington, Oxford
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Soil Ecology (IBOE)
Institute of Biomathematics and Biometry (IBB)
POF Topic(s) 20402 - Sustainable Plant Production
30501 - Systemic Analysis of Genetic and Environmental Factors that Impact Health
Forschungsfeld(er) Environmental Sciences
PSP-Element(e) G-504400-002
G-503800-001
DOI 10.1016/j.chemosphere.2009.08.029
Scopus ID 70350547762
PubMed ID 19748113
Erfassungsdatum 2009-12-03
[➜Korrektur melden]