This title appears in the Scientific Report :
2008
Please use the identifier:
http://dx.doi.org/10.1039/b717942a in citations.
Simplified determination of lipophilic metabolites of nonylphenol ethoxylates: method development and application in aqueous samples from Buenos Aires, Argentina
Simplified determination of lipophilic metabolites of nonylphenol ethoxylates: method development and application in aqueous samples from Buenos Aires, Argentina
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...
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Personal Name(s): | Babay, P. A. |
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Ale, E. E. R. / Itria, R. F. / Becquart, E. T. / Thiele, B. / Batistoni, D. A. | |
Contributing Institute: |
Phytosphäre; ICG-3 |
Published in: | Journal of environmental monitoring, 10 (2008) S. 443 - 452 |
Imprint: |
London
Royal Society of Chemistry
2008
|
Physical Description: |
443 - 452 |
PubMed ID: |
18385865 |
DOI: |
10.1039/b717942a |
Document Type: |
Journal Article |
Research Program: |
Terrestrische Umwelt |
Series Title: |
Journal of Environmental Monitoring
10 |
Subject (ZB): | |
Publikationsportal JuSER |
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. |