With the system, all samples can be analyzed within 5 min. The on-line HPLC-FRSD system has low limits of
detection (0.001–0.010 mg mL1) and quantification (0.005–0.020 mg mL1), excellent recovery rate
(90.44–115.72%), stability (RSD < 15.80%), reproducibility (RSD < 2%), and precision (RSD < 2%)