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Title

Presence, biotransformation and effects of sulfophenylcarboxylic acids in the benthic fish Solea senegalensis

AuthorsÁlvarez-Muñoz, D.; Lara-Martín, Pablo A.; Blasco, Julián ; Gómez-Parra, Abelardo; González-Mazo, E.
KeywordsSurfactants
Linear alkylbenzene sulphonate
Sulfophynylcarboxylic
Estuaries
Biotransformation
Biomarkers
Flow-through system
Fish
Issue Date16-Nov-2006
PublisherElsevier
CitationEnvironment International 33(4): 565-570 (2006)
AbstractThe presence of linear alkylbenzene sulfonates (LAS) and their degradation intermediates, sulfophenylcarboxylic acids (SPCs), with concentrations up to 100 ppb has been found in surface waters taken from the estuary of the river Guadalete (Cádiz, SW of Spain). Higher concentrations were found at the sampling site located adjacent to the discharge outlet of a wastewater treatment plant (WWTP). The concentrations decreased downstream to a few ppb as a result of dilution, sorption, and degradation processes, which were taking place along the estuary. Once the presence of both xenobiotics was confirmed in the environment, an in vivo assay was conducted to study their biotransformation and effects in the benthic fish Solea senegalensis. A flow-through system was employed, consisting of an exposure phase (120 h) with environmental levels of the surfactant (200, 500 and 800 μg/L of 2ØC10LAS), followed by a depuration stage (72 h). The generation of SPCs has been quantified during these phases in both water and fish, with LAS biotransformation shown in all cases. The antioxidant enzymes catalase (CAT), glutathione peroxidase (GPX), glutathione reductase (GR), the phase II enzyme glutathione S-transferase (GST), and the phase III acid and alkaline phosphatases (AcP, ALP) were also estimated and utilized as biomarkers.
Description6 páginas, 5 figuras.
Publisher version (URL)http://dx.doi.org/10.1016/j.envint.2006.09.015
URIhttp://hdl.handle.net/10261/43488
DOI10.1016/j.envint.2006.09.015
ISSN0160-4120
E-ISSN1873-6750
Appears in Collections:(ICMAN) Artículos
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