Calibration Curves for Low Concentration F^-

IC NI-424 permits measurement of fluoride ion on the order of micro-g/L in analyzing ultra pure water by the direct injection method specified in JIS(Japanese Industrial Standard) K 0556.


Sample : 1mL
F^-

Column       : Shodex IC NI-424 (4.6mmID*100mm)
Eluent       : 8mM 4-Hydroxybenzoic acid + 2.8mM Bis-Tris + 2mM Phenylboronic acid + 0.005mM *CyDTA aq.
Flow rate    : 1.0mL/min
Detector     : Non-suppressed conductivity
Column temp. : 40deg-C

^* CyDTA: trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid