使用LC/MS/MS进行溴酸盐的高灵敏度分析 (JJ-50 2D)
时间:2024-12-04 阅读:105
Sample : 5 μL
Standard solution
1. ClO3-, Chlorate 0.01 mg/L
2. NO3-, Nitrate 0.1 mg/L
3. BrO3-, Bromate 0.01 mg/L
4. Br, Bromide 0.1 mg/L
5. Cl-, Chloride 0.1 mg/L
6. SO42-, Sulfate 0.1 mg/L
Sample : 5 μL
Tap water
1. ClO3-, Chlorate
2. NO3-, Nitrate
3. BrO3-, Bromate
4. Br-, Bromide
5. Cl-, Chloride
6. SO42-, Sulfate
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 % (14 min)
→ 85 B % (15 min) → 85 B % (20 min)
Flow rate : 0.3 mL/min
Detector : ESI-MS/MS (MRM Negative) for ClO3-, BrO3-
ESI-MS (SIM Negative) for NO3-, Br-, Cl-, SO42-
Column temp. : 50 ℃