Analysis of Anionic Surfactants Using the RF-20A Fluorescence Detector

In the analysis of anionic surfactants, of which standard values are specified by the water quality standards in the Japanese Water Supply Act, 250 mL of test water is subjected to 250-fold concentration using a solid phase extraction cartridge. The surfactants are then detected with a fluorescence detector after separation utilizing a reversed phase separation column.
In this case, a C18 column, which uses the octadecyl silyl group (C18) as the solid phase, was used. Anionic surfactants C10 to C14, which are subject to analysis, include branched chains. Thus, approximately 20 isomers are separated.