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Rain Water (NI-424)

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Four kinds of anions in rain water were analyzed using IC NI-424 (an anion analysis column for non-suppressor method).


Sample : Rain water, 100μL
1. Cl-
2. NO2-
3. NO3-
4. SO42-
Column       : Shodex IC NI-424 (4.6mmI.D. x 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. : 40°C
* CyDTA: trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid