초록 ▼

A permselective ion-exchange membrane, preferably comprising hollow fiber(s) immersed within a regenerant, is used to selectively neutralize or suppress the conductivity of electrolyte in a stream of eluent also containing chromatographically separated ions. The invention particularly specifies a ch

A permselective ion-exchange membrane, preferably comprising hollow fiber(s) immersed within a regenerant, is used to selectively neutralize or suppress the conductivity of electrolyte in a stream of eluent also containing chromatographically separated ions. The invention particularly specifies a chromatographic separating column useful with an electrolyte eluent solution to separate ionic species by elution chromatography, wherein the effluent of the separator column is treated by the described membrane to suppress the conductivity of the electrolyte but not that of the separated ions.

대표청구항 ▼

Apparatus for ion analysis comprising an eluent reservoir, a chromatographic separating means in communication with said reservoir for receiving eluent therefrom, said separating means comprising a separating medium useful for separating ionic species of a sample eluted therethrough using eluent com

Apparatus for ion analysis comprising an eluent reservoir, a chromatographic separating means in communication with said reservoir for receiving eluent therefrom, said separating means comprising a separating medium useful for separating ionic species of a sample eluted therethrough using eluent comprising an electrolyte in solution, suppressor means communicating with said separating means for treating effluent eluted therefrom, the suppressor means being comprised of a regenerant, and an ion-exchange membrane partitioning said regenerant from the effluent of the separating means, the membrane being preferentially permeable to ions of the same charge as the exchangeable ions of said membrane, the exchangeable ions of said membrane being in the ion form needed to convert said electrolyte of the eluent to a weakly ionized form, and a detector means suitable for detecting resolved ionic species communicating with the suppressor means for receiving the treated effluent therefrom.