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Jiang, X.* ; Yediler, A. ; Yufang, S.* ; Sun, T.* ; Kettrup, A.

Effect of linear alkylbenzene sulphonate (LAS) on the mineralization, metabolism and uptake of 14C-phenanthrene in a model ecosystem (water-lava-plant-air).

Chemosphere 61, 741-751 (2005)
DOI
Open Access Gold as soon as Publ. Version/Full Text is submitted to ZB.
The aim of this work was to evaluate the effect of linear alkylbenzene sulfonate (LAS, 200 mg l−1) on the fate of phenanthrene in a model ecosystem “water–lava–hydrophytes–air”. The experiments were conducted using two closed cultivation chamber systems. Rushes (Juncus effesus) were selected as a representative hydrophyte. Five hundred micrograms per liter of phenanthrene in a culture solution containing a 14C-activity of 75 μCi per chamber was applied (i) to investigate the degradation of the labeled test substance and the transfer processes within the system; (ii) to determine the mass-balance possible and (iii) to detect the occurrence of volatile test substances, their volatile metabolites and the degradation end-product CO2 in the gas phase. Most of the applied 14C-activity was found in the plant (41–45%), in which ≈95% was associated with plant roots and ≈5% with shoots. The 14C-activity recovered in the form of VOCs and CO2 was measured in lava (18–29%, 8–11%), and in the culture solution (10–14% and 1%), respectively. Majority of the applied 14C-activity existed in two forms, i.e. (1) polar metabolites (26%), of which 91% were found in plant roots, and (2) un-extractable residues (23%), most of which were in plant roots (40%) and bounded to lava (58%). The presence of LAS significantly increased the volatilization of phenanthrene and its metabolites, inhibited its mineralization and decreased the level of 14C-activity in lava. Moreover, LAS reduced the phenanthrene level in plant roots.
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Publication type Article: Journal article
Document type Scientific Article
Keywords 14C-phenanthrene; Phenanthrene metabolites; LAS; Combined effect on translocation; Closed chambers; Mass-balance; Juncus effesus; Model ecosystem ‘water–lava–hydrophyte–air’
ISSN (print) / ISBN 0045-6535
e-ISSN 1879-1298
Journal Chemosphere
Quellenangaben Volume: 61, Issue: 5, Pages: 741-751 Article Number: , Supplement: ,
Publisher Elsevier
Publishing Place Kidlington, Oxford
Reviewing status Peer reviewed
Institute(s) Institute of Ecological Chemistry (IOEC)