Anion Standards (18) (NI-424)

Because of good separation of IC NI-424, nitrite ion can be separated and quantitatively determined even if the concentration of chloride ion is high.

Sample : 100micro-L
1. Cl^–
2. NO₂^–

 Column : Shodex IC NI-424 (4.6mmID*100mm)
 Eluent : *18mM 4-Hydroxybenzoic acid + 2.8mM Bis-Tris 
 + 2mM Phenylboronic acid + 0.005mM *2CyDTA(pH4.2)
 Flow rate : 1.0mL/min
 Detector : Shodex CD
 Column temp. : 40°C

^*1 The prescribed pH can be obtained by mixing the reagents in the composition described here.
^*2 CyDTA: trans-1,2-Diaminocyclohexane-N,N,N’,N’-tetraacetic acid