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Validation of an enzyme-linked immunosorbent assay (ELISA) for the determination of 4-nonylphenol and octylphenol in surface water samples by LC-ESI-MS

AuthorsCéspedes, Raquel; Skryjová, K.; Raková, M.; Zeravik, J.; Fránek, M.; Lacorte Bruguera, Silvia; Barceló, Damià
Liquid chromatography–mass spectrometry (LC–MS)
Issue Date15-Nov-2006
CitationTalanta 70(4): 745-751 (2006)
Abstract4-Nonylphenol (NP) and octylphenol (OP) were measured by direct ELISA in both laboratory-fortified and surface water samples collected monthly from 10 rivers. In this procedure, samples were concentrated by solid phase extraction (SPE) using Lichrolut RP-18 sorbent with good recoveries obtained for both LC–MS and ELISA, giving a low level of detection (LOD) at the range of low μg L−1 and good reproducibility. Analysis of 40 surface water samples demonstrated that the ELISA may be a useful screening tool for the determination of the alkylphenols in surface water matrices. The concentration of NP and OP in surface waters ranged from 0.11 to 6.58 μg L−1. A good correlation of results obtained by ELISA and LC–MS within the concentration range of 0.08–6.86 μg L−1 was found in the river samples [R2 = 0.924, n = 39]. The influence of various factors on assay determination was also discussed
Description7 pages, 3 figures, 3 tables.
Publisher version (URL)http://dx.doi.org/10.1016/j.talanta.2006.07.001
Appears in Collections:(IDAEA) Artículos
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