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Presence of surfactants and their degradation intermediates in sediment cores and grabs from the Cadiz Bay area

AuthorsLara-Martín, P. A.; Petrovic, Mira; Gómez-Parra, Abelardo; Barceló, Damià ; González-Mazo, E.
KeywordsAnionic surfactants
Non-ionic surfactants
Vertical profiles
Issue Date23-Mar-2006
CitationEnvironmental Pollution 144(2): 483-491 (2006)
AbstractThe occurrence and distribution of the major surfactants e LAS, AES, APEOs and AEOs e and their degradation intermediates e SPCs, AP and APECs e in a marine-estuarine environment at Spain are presented. Results show that their concentration in surface sediments is clearly correlated with their usage and the existence of wastewater discharges. The degradation processes appear to lead to the formation of SPCs in the case of LAS, and to the shortening of the average ethoxylated chain length in the case of NPEOs, AEOs and AES. Vertical profiles for AEOs and AES are reported for the first time and present the highest values nearest the surface, followed by a sharp decrease with depth for all surfactants, as well as the appearance of degradation intermediates in deeper sedimentary layers. Shorter LAS homologues and SPCs tend to be present in pore water while strongly non-polar intermediates like NP are firmly attached to the sediments.
The presence of vertical and longitudinal distribution of the major surfactants and their intermediates in sediments and pore water is reported for the first time.
Description9 pages, 6 figures, 1 table.-- PMID: 16551487 [PubMed].-- Printed version published Nov 2006.-- Issue title: Passive Air Sampling of Persistent Organic Pollutants - Passive Air Sampling of Persistent Organic Pollutants.
Publisher version (URL)http://dx.doi.org/10.1016/j.envpol.2006.01.033
Appears in Collections:(IDAEA) Artículos
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