Two-membrane eluent generator and chromatography detection apparatus

A two-membrane eluent generator, comprising a first eluent generator, wherein the first eluent generator comprises:

• a stock solution channel, a stock solution in the stock solution channel supplying anions or cations for an eluent;
• an eluent channel, water that has passed through the eluent channel forming the eluent, a first ion-exchange membrane set being arranged between the eluent channel and the stock solution channel, the first ion-exchange membrane set comprising at least one ion-exchange membrane, the ion-exchange membrane being a cation-exchange membrane or an anion-exchange membrane, cations or anions in the stock solution passing through the first ion-exchange membrane set to enter the eluent channel;
• a regenerant solution channel, the eluent that has been used entering the regenerant solution channel to serve as a regenerant solution, a second ion-exchange membrane set being arranged between the eluent channel and the regenerant solution channel, the second ion-exchange membrane set comprising a bipolar membrane, hydrogen ions or hydroxide ions generated at the bipolar membrane from electrolysis of the regenerant solution allowed to enter different sides of the bipolar membrane respectively, the bipolar membrane being configured for preventing impurity ions that are not the hydrogen ions or the hydroxide ions from passing through the bipolar membrane and entering the eluent channel.