Fig. 4From: Quantitative analysis of galactose using LDI-TOF MS based on a TiO2 nanowire chipSelectivity test of the OPD reaction with galactose concentration under the interference of glucose. a Mass spectra of OPD assay products with different concentrations of galactose and a fixed concentration of glucose (541.0 μg/mL). b Mass spectra of OPD reaction products with different concentrations of glucose and a fixed concentration of galactose (33.4 μg/mL)Back to article page