High Sensitive Detection Method for Anions (I-524A)
When anion standards are analyzed using an anion analysis column for non-suppressor method, IC I-524A, the eluent of octanesulfonic acid / boric acid is suitable for high sensitive analysis. The background of the eluent is low and baseline drift is small even when a large sample volume, up to 200 μL, is injected. The table below shows the detection limit of each anion. Please refer to 'Anion Standards (8) (Eluent : Octanesulfonic Acid and Boric Acid)'.
(Preparation of eluent) 1) Put 0.195g of reagent grade sodium 1-octanesulfonate and 1.22g of reagent grade boric acid into a volumetric flask. 2) Dilute with purified water to make up a 1 liter solution. 3) Dissolve using an ultrasonic vibrator. 4) Pass through a 0.2μm membrane filter before use.
( ) : Concentration of detection limit at 200μL injection