Sample : 50micro-L
1. 40.0mg/L HCO3–
2. 4.0mg/L H2PO4–
3. 0.3mg/L F–
4. 0.5mg/L Cl–
5. 1.2mg/L NO2–
6. 2.0mg/L Br–
7. 2.0mg/L NO3–
8. 2.0mg/L SO42-
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