Journal of Chromatography A 2012 DOI: 10.1016/j.chroma.2011.12.109 View full text
Caixiang Zhang, Robert P. Eganhouse, James Pontolillo, Isabelle M. Cozzarelli, Yanxin Wang

Abstract: 4-Nonylphenols (4-NPs) are known endocrine disruptors and by-products of the microbial degradation of nonylphenol polyethoxylate surfactants. One of the challenges to understanding the toxic effects of nonylphenols is the large number of isomers that may exist in environmental samples. In order to attribute toxic effects to specific compounds, a method is needed for the separation and quantitation of individual nonylphenol isomers. The pre-concentration methods of solvent sublimation, solid-phase extraction or…

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