The figure shows calibration curves of IC NI-424 (an anion analysis column for non-suppressor method) for three kinds of anions. The calibration curves for chloride and nitrite ions exhibit linearity in a range between 0.01 and 100 mg/L. For phosphoric acid ion which has low sensitivity, the calibration curve exhibits linearity in a range between 0.1 and 100 mg/L.
Sample : 50µL
Column : Shodex IC NI-424 (4.6mmI.D. x 100mm) Eluent : 2.1mM Phthalic acid + 2.9mM Amino-n-capronic acid + 6mM Phenylboronic acid aq. Flow rate : 1.0mL/min Detector : Non-suppressed conductivity Column temp. : 40°C