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Milk (I-524A)

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Anions in milk were analyzed using IC I-524A (an anion analysis column for non-suppressor method). Milk contains a considerable amount of proteins and fats, and therefore should be pretreated. 100-fold dilution with pure water was made and then treated by an solid phase extraction cartridge for reversed phase chromatography.


Sample : 100-fold diluted Milk, 50μL
2. HCO3-
3. Cl-
6. NO3-
7. HPO42-

Sample : Anion Standards, 50μL
1. F- 5mg/L
2. HCO3- 30mg/L
3. Cl- 5mg/L
4. NO2- 5mg/L
5. Br- 10mg/L
6. NO3- 10mg/L
7. HPO42- 10mg/L
8. SO42- 10mg/L
Column       : Shodex IC I-524A (4.6mmI.D. x 100mm)
Eluent       : 1.5mM p-Hydoxybenzoic acid + 1.7mM N,N-Diethylethanolamine + 10% CH3OH
Flow rate    : 1.5mL/min
Detector     : Non-suppressed coductivity
Column temp. : 40°C