Fig. 7: Intermediate-scale validation of the nano reporter.
From: A nano-structured reporter for high-sensitivity contaminant detection in groundwater

a Schematic of the sand tank used for the test. b Spatial distribution of FPOC from digital image. c Mass distribution of FPOCs mapped by electrical resistivity tomography (ERT). d Comparison of FPOC saturation (Sn) determined by the nano reporter and by ERT. The solid line shows the 1:1 relationship, and the shaded area represents the 99% confidence interval for the correlation. e Comparison of vertical FPOC profiles based on the nano reporter vs. ERT in regions A and B.