Alkylphenol ethoxysulfonate surfactants

Benomar, S. H., Clench, M. R., and Allen, D. W., The analysis of alkylphenol ethoxysulfonate surfactants hy high-performance liquid chromatography, liquid chromatography-electrospray ionisation-mass spectrometry and matrix-assisted laser desorption ionisation-mass spectrometry. Anal. Chim. Acta, 445, 255-267, 2001. 

Some sulfur compoimds such as alkylphenol ethoxysulfonate surfactant formulations can be detected by MALDI-MS. Benomar et al. [19] concluded that the MALDI-MS technique has been shown to be an useful tool for the analysis of these compounds. 

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