Fig. 4: Chromatograms of SO42− standards tested at a flow rate of 25 μL min−1 (n = 3).
The inset shows the calibration plot. Eluent: 4-mM p-HBA containing 2.5% methanol (pH=8.5). Injection: 0.5μL. Detection: ambient
Fig. 4: Chromatograms of SO42− standards tested at a flow rate of 25 μL min−1 (n = 3). | Microsystems & Nanoengineering
