Quantification of Sterol and Triterpenol Biomarkers in Sediments of the Cananéia-Iguape Estuarine-Lagoonal System (Brazil) by UHPLC-MS/MS

Figure 4

Plot of coprostanol/(coprostanol + cholestanol) ratios against coprostanol/cholesterol ratios for all sedimentary core samples that presented quantifiable concentration of these sterols. The lines inside the graph represent the regions that are considered contaminated or uncontaminated by the diagnostic ratios.