TY  - JOUR
AU  - Babay, P. A.
AU  - Ale, E. E. R.
AU  - Itria, R. F.
AU  - Becquart, E. T.
AU  - Thiele, B.
AU  - Batistoni, D. A.
TI  - Simplified determination of lipophilic metabolites of nonylphenol ethoxylates: method development and application in aqueous samples from Buenos Aires, Argentina
JO  - Journal of environmental monitoring
VL  - 10
SN  - 1464-0325
CY  - London
PB  - Royal Society of Chemistry
M1  - PreJuSER-61335
SP  - 443 - 452
PY  - 2008
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - Argentina
KW  - Chromatography, High Pressure Liquid
KW  - Environmental Monitoring: methods
KW  - Ethylene Glycols: analysis
KW  - Gas Chromatography-Mass Spectrometry
KW  - Solid Phase Extraction
KW  - Surface-Active Agents: analysis
KW  - Water Pollutants, Chemical: analysis
KW  - Ethylene Glycols (NLM Chemicals)
KW  - Surface-Active Agents (NLM Chemicals)
KW  - Water Pollutants, Chemical (NLM Chemicals)
KW  - terics (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:18385865
UR  - <Go to ISI:>//WOS:000254648300007
DO  - DOI:10.1039/b717942a
UR  - https://juser.fz-juelich.de/record/61335
ER  -