Fig. 3: H2S detection at high concentration using INTEN method.
From: Femtomolar hydrogen sulfide detection via hybrid small-molecule nano-arrays
a PL images of serial NaHS concentration in 10 pM, 100 pM, 1 nM, 10 nM, 100 nM, and 1 μM in the 5 × 5 nano-assay. The images of other concentrations (from 0.1 fM to 1 pM) are shown in Supplementary Fig. S12. Scale bar, 5 μm. b The working curve of NaHS tested on the nanoarray using the INTEN method. The black line shows the fitting result by the 4-parameter logistic regression model. The blue dotted line represents the background levels, which are defined as the mean luminescence intensity of negative controls with a three-fold standard deviation. The fitting parameters are listed in Supplementary Table S1. The blue dash line shows the linear regression after logit transformation of the method. Error bars indicate the standard deviation from three replicate experiments.
