Fig. 6: Comparing chromatographic separation of PAHs in commercial & portable instruments.

Overlay of PAH mix runs for the portable (green line) and Agilent1260/90 (blue line) systems monitored at 230 ± 2 nm. Arrowheads indicate identified peaks. a For Zorbax column runs operating, flow rates were 238 ± 0.35 μL min⁻¹ and 236.5 ± 3.3 μL min⁻¹ for chromatographic runs on the Agilent1260/90 and portable systems, respectively. b For Poroshell column runs, flow rates were 131 ± 0.22 μL min⁻¹ and 131 ± 0.18 μL min⁻¹ for chromatographic runs on the Agilent1260/90 and portable systems, respectively. b Full-spectrum chromatograms ‘heatmaps’ are shown below each 2D trace. Further tabulated results of the PAH mix separation for the portable and Agilent1260/90 systems can be found in the ESI (n = 3) and show the portable system compares favourably. Open and closed arrowheads indicate injection and analyte peaks, respectively.