Abstract
The newly developed Solid Phase Reagent (SPR) permits the conductivity detection of various alkylsulfonates and alkylsulfates. In its present version, SPR is an aqueous suspension of submicron particles of a polymeric cation exchange material in the hydrogen form. The SPR is pumped into the eluent stream coming from the separation column. The post-column reaction transforms the tetrabutylammoinium alkyl sulfate or sulfonate into the corresponding free acid. This changes the analytes into more conductive species. At the same time the tetrabutylammonium borate eluent is converted to the low conducting boric acid. Both types of post-column reactions greatly increase the sensitivity of detection by conductivity. The conductivity detection method with the help of SPR also makes it possible to employ gradient elution for separations of complex mixtures of alkylsulfates or sulfonates. Such gradient separations are preferably carried out on silica based reversed-phase columns, rather than on polymeric based reversed-phase columns. The latter type of columns shows better tolerance to increase levels of the organic solvents as well as higher separation efficiency.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
