Sodium Azide (1) (I-524A)

Sodium azide was analyzed using IC I-524A (a column for anions analysis).

(Preparation of eluent(pH4.0))
(1) Put 0.415g of reagent grade phthalic acid and 0.278g of reagent grade tris(hydroxymethyl)aminomethane into a 1 liter messflask.
(2) Dilute with purified water to make up a 1 liter solution.
(3) Dissolve using an ultrasonic vibrator.
(4) Pass through a 0.2microm membrane filter before use.


Sample : Sodium azide, 30micro-L
1. N₃^-, Azide ion 10ppm
2. Cl^-

Column       : Shodex IC I-524A (4.6mmID*100mm)
Eluent       : 2.5mM Phthalic acid(pH4.0 adjusted by Tris(hydroxymethyl)aminomethane)
Flow rate    : 1.2mL/min
Detector     : Shodex CD
Column temp. : 40deg-C