Calibration Curves for Low Concentration F- (NI-424)

IC NI-424 (an anion analysis column for non-suppressor method) permits measurement of fluoride ion on the order of μg/L in analyzing ultra pure water by the direct injection method specified in JIS(Japanese Industrial Standard) K 0556.


Sample : 1 mL
F-


Column       : Shodex IC NI-424 (4.6 mm I.D. x 100 mm)
Eluent       : 8 mM 4-Hydroxybenzoic acid + 2.8 mM Bis-Tris + 2 mM Phenylboronic acid 
               + 0.005 mM *CyDTA aq.
Flow rate    : 1.0 mL/min
Detector     : Non-suppressed conductivity
Column temp. : 40 °C
* CyDTA: trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid

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