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Open Access Gold as soon as Publ. Version/Full Text is submitted to ZB.
Fate of two Phenylbenzoylurea Insecticides in an Algae Culture System (Scenedesmus Subspicatus).
Chemosphere 26, 955-962 (1993)
The bioaccumulation, elimination and degradation of 14C-labelled diflubenzuron (DFB) and of 1-(2-chlorobenzoyl)-3-(4-chlorophenyl)urea (CCU) was studied in a laboratory algae culture system of scenedesmus subspicatus. Algae were exposed at an initial concentration of 200 μg/l for seven days. Neither substance had an inhibitory effect on the growth of algae. The half life of DFB and CCU was 3 and 1 days, respectively, as measured by HPLC. The distribution of 14C between medium and algae was measured. In the case of DFB radioactivity in algae increased steadily and levelled off at approximately 60% after 5 days. Due to algae growth BCF values decreased from 4310 to 889 for DFB and from 6719 to 304 for CCU during the exposure period. The relationship between algae density and bioconcentration could be correlated by an adsorption isotherm. Elimination of both compounds was rapid during the first hours.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Algae; Diflubenzuron; 1-(2-chlorobenzoyl)-3-(4-chlorophenyl)urea; Accumulation; Elimination; Degradation
Language
english
Publication Year
1993
HGF-reported in Year
0
ISSN (print) / ISBN
0045-6535
e-ISSN
1879-1298
Journal
Chemosphere
Quellenangaben
Volume: 26,
Issue: 5,
Pages: 955-962
Publisher
Elsevier
Publishing Place
Kidlington, Oxford
Reviewing status
Peer reviewed
Institute(s)
Institute of Ecological Chemistry (IOEC)
Scopus ID
0027522451
Erfassungsdatum
1993-12-31