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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
The dissipation, distribution and fate of a branched
14
C-nonylphenol isomer in lake water/sediment systems
Environmental Pollution, Volume 122, No. 2, Year 2003
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Description
A single tertiary isomer which is believed to be one of the major branched isomers of the isomeric nonylphenol was synthesized for use in investigations on its metabolism and estrogenicity in aquatic organisms. The physico-chemical properties of the isomer were determined to enable the prediction of its behaviour in aquatic environments. From laboratory investigations on its dissipation and distribution in lake water, which are reported in this paper, it was found that it had a half-life of dissipation of 38.1 days and 20.1 days in an open lake water and in an open lake water/sediment system, respectively, and to be rapidly partitioned in to sediment giving a high concentration factor of 1.76 after 28 days with an initial dose concentration of 2.52 ppm. The main dissipation route was found to occur through volatilization and co-distillation. The isomer was, however, found to be resistant to biodegradation in both the lake water and sediment, showing only a slight 9% loss (after 56 days) and 4.2% loss (after 28 days), of the 14C-residues in lake water and lake water/sediment systems, respectively, by microbial activity. Transformation to other more polar metabolites possibly by hydroxylation was also found to be minimal in both lake water and sediment samples after 14 days by HPLC analysis. After 7 days, only 2.25 and 7.4% transformation to a more polar metabolite was detected in lake water and sediment samples, respectively. © 2002 Elsevier Science Ltd. All rights reserved.
Authors & Co-Authors
Lalah, Joseph Owuor
Kenya, Maseno
Maseno University
Schramm, K. W.
Germany, Oberschleissheim
Helmholtz Center Munich German Research Center for Environmental Health
Henkelmann, Bernhard
Germany, Oberschleissheim
Helmholtz Center Munich German Research Center for Environmental Health
Lenoir, Dieter
Germany, Oberschleissheim
Helmholtz Center Munich German Research Center for Environmental Health
Behechti, Akbar
Germany, Oberschleissheim
Helmholtz Center Munich German Research Center for Environmental Health
Günther, Klaus
Unknown Affiliation
Kettrup, Antonius
Germany, Oberschleissheim
Helmholtz Center Munich German Research Center for Environmental Health
Statistics
Citations: 31
Authors: 7
Affiliations: 2
Identifiers
Doi:
10.1016/S0269-7491(02)00295-6
ISSN:
02697491
Research Areas
Environmental