EDTA and NTA were separated with the ion chromatography column NI-424.The calibration curve derived from the chromatograms for the concentrations 20mg/L,50mg/L,100mg/L showed a good linearity.
Sample : 100µL
1. 20mg/L Ethylenediaminetetraacetic acid, EDTA
2. 20mg/L Nitrilotriacetic acid, NTA,
Column : Shodex IC NI-424 (4.6mmID*100mm)
Eluent : 2mM H2SO4 aq.
Flow rate : 1.0mL/min
Detector : UV(210nm)
Column temp. : 40°C
