Mass spectrometry, ethoxylate metabolites

Reversed phase liquid chromatography-mass spectrometry was applied to extracts of Jamaica Bay (New York) water to determine 1-300 xg/l amounts of nonyl phenol ethoxylates and their metabolites [213]. 

Ferguson P.L., C.R. Iden, and B.J. Brownawell (2000). Analysis of alkylophenol ethoxylate metabolites in the aquatic environment using liquid chromatography-electrospray mass spectrometry. Analytical Chemistry 72 4322-4330. 

Petrovic M and Barcelo D (2001) Analysis of ethoxylated non-ionic surfactants and their metabolites by liquid chromatography-atmospheric pressure ionization mass spectrometry. Journal of Mass Spectrometry 36 1173-1185. 

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