Sample : 5 μL
10 μg/L each for ClO₃^-, BrO₃^-
100 μg/L each for MCAA, DCAA, TCAA
in Tap water containing sodium thiosulfate 0.3 w/v%

1. ClO₄^-, Perchlorate
2. TCAA, Trichloroacetic acid
3. ClO₃^-, Chlorate
4. DCAA, Dichloroacetic acid
5. NO₃^-, Nitrate
6. MCAA, Chloroacetic acid
7. BrO₃^-, Bromate
8. Br^-, Bromide
9. Cl^-, Chloride
10. SO₄^2-, Sulfate
11. S₂O₃^2-, Thiosulfate

Sample: 5 μL
Tap water containing
sodium thiosulfate 0.3 w/v%

1. ClO₄^-, Perchlorate
2. TCAA, Trichloroacetic acid
3. ClO₃^-, Chlorate
4. DCAA, Dichloroacetic acid
5. NO₃^-, Nitrate
6. MCAA, Chloroacetic acid
7. BrO₃^-, Bromate
8. Br^-, Bromide
9. Cl^-, Chloride
10. SO₄^2-, Sulfate
11. S₂O₃^2-, Thiosulfate


 

Column       : Shodex RSpak JJ-50 2D (2.0 mm I.D. x 150 mm)

Eluent       : (A); 200 mM HCOONH4 aq./(B); CH3CN

               Linear gradient (High pressure);

               85 % B (0 min) → 85 % B (8 min) → 50 % B (9 min) → 50 % B (20 min)

Flow rate    : 0.3 mL/min

Detector     : ESI-MS/MS (MRM Negative) for ClO3-, BrO3-

               ESI-MS (SIM Negative) for ClO4-, TCAA, DCAA, NO3-, 

                                         MCAA, Br-, Cl-, SO42-, S2O32-

Column temp. : 50 ℃