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DETERMINATION OF SURFACTANT SODIUM LAURYL ESTHER SULFATE BY ION PAIRING CHROMATOGRAPHY WITH SUPPRESED CONDUCTIVITY DETECTION
Citation:
Ye, M., R. Walkup, AND K. Hill. DETERMINATION OF SURFACTANT SODIUM LAURYL ESTHER SULFATE BY ION PAIRING CHROMATOGRAPHY WITH SUPPRESED CONDUCTIVITY DETECTION. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-95/018.
Description:
A method for the determination of the anionic Steol CS-330 surfactant is described. S-330 is a complex mixture of oligomers due to the various sizes of fatty alcohols and the number of moles of the ethoxylation. he main component of CS-330 is sodium lauryl ether sulfate (SLES). ince a SLES molecule has a hydrophilic sulfate head and a hydrophobic alkyl ethoxyl tail, it is very difficult to separate these molecules with conventional reverse phase chromatography with suppressed conductivity detection. he separation of oligomers in CS-330 is achieved. LES sensitive. uppressed conductivity detection technique significantly increases sensitivity and a quantitation limit of 56.60 ppm is achieved.