| 摘要 |
PURPOSE:To make it possible to perform measurement in a low pH region and to expand specimens to be applied, by using carbonate solution or hydrogen carbonate solution of ion reagent as an eluant. CONSTITUTION:An eluant 1 incorporating carbonate or hydrogen carbonate of ion reagent is sent into a separating column 4, a cation exchange film suppressor 5 and a conductivity detector 8 through an injection valve 3 art a constant speed with a constant quantity pump 2. H2SO4 solution 7 is always sent to the outside of the cation exchange film in the suppressor 5 with a constant quantity pump 6. Therefore, the solution is always regenerated as an H<+> type in the suppressor 5. The eluate which is sent into the suppressor is transformed into H2CO3 through cation exchange. Therefore, background conductivity which is measured by using a conduction detector 8 is decreased. Thus, the increase in conductivity owing to the elution of a specimen component which is injected through the valve 3 is detected with the detector 8 highly accurately at high sensitivity. |
