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@ARTICLE{Babay:61335,
      author       = {Babay, P. A. and Ale, E. E. R. and Itria, R. F. and
                      Becquart, E. T. and Thiele, B. and Batistoni, D. A.},
      title        = {{S}implified determination of lipophilic metabolites of
                      nonylphenol ethoxylates: method development and application
                      in aqueous samples from {B}uenos {A}ires, {A}rgentina},
      journal      = {Journal of environmental monitoring},
      volume       = {10},
      issn         = {1464-0325},
      address      = {London},
      publisher    = {Royal Society of Chemistry},
      reportid     = {PreJuSER-61335},
      pages        = {443 - 452},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {In the present work we have developed an analytical
                      methodology for the determination of nonylphenol (NP) and
                      nonylphenol mono- and di-ethoxylates (NP1EO and NP2EO) in
                      water samples. The applicability of this methodology was
                      proved by means of the analysis of environmentally relevant
                      aqueous samples from Buenos Aires. This constitutes a
                      starting point for a rigorous assessment of the incidence of
                      NPnEO surfactants in Argentina, as only very few,
                      qualitative or semi-quantitative data on the occurrence of
                      these compounds in local systems were available up to this
                      time. Enrichment of the analytes was carried out by
                      solid-phase extraction on a C-18 sorbent, followed by
                      elution with ethyl acetate. Normal-phase high performance
                      liquid chromatography on an amino-silica column and
                      fluorescence detection at excitation-emission wavelengths of
                      230-300 nm were employed for separation and quantification
                      of the analytes. Confirmation of peak assignment in selected
                      real samples was performed by off-line coupling HPLC with
                      GC-MS analysis. A non-polar GC capillary column was used,
                      and a characteristic peak pattern was obtained for the alkyl
                      chain isomers of each ethoxylated homologue and NP. GC-MS
                      analyses yielded in all cases purity levels higher than
                      $80\%$ for the HPLC collected fractions. The elevated
                      concentrations found for the estrogenic metabolites of NPnEO
                      are in accordance with an unrestricted use of this class of
                      non-ionic surfactants in the country.},
      keywords     = {Argentina / Chromatography, High Pressure Liquid /
                      Environmental Monitoring: methods / Ethylene Glycols:
                      analysis / Gas Chromatography-Mass Spectrometry / Solid
                      Phase Extraction / Surface-Active Agents: analysis / Water
                      Pollutants, Chemical: analysis / Ethylene Glycols (NLM
                      Chemicals) / Surface-Active Agents (NLM Chemicals) / Water
                      Pollutants, Chemical (NLM Chemicals) / terics (NLM
                      Chemicals) / J (WoSType)},
      cin          = {ICG-3},
      ddc          = {333.7},
      cid          = {I:(DE-Juel1)ICG-3-20090406},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Chemistry, Analytical / Environmental Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:18385865},
      UT           = {WOS:000254648300007},
      doi          = {10.1039/b717942a},
      url          = {https://juser.fz-juelich.de/record/61335},
}