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. 2018 Aug 24;23(9):2130. doi: 10.3390/molecules23092130

Figure 9.

Figure 9

The response peak current of Cu2O-ErGO/GCE for 1 × 10−5 mol/L sunset yellow (SY) in the presence of interfering substances (n = 3). The concentration of glucose, benzoic acid (BA), citric acid (CA), Na+, K+, Fe3+, were 1 × 10−3 mol/L. The concentrations of Tartrazine, quinoline yellow (QY) were 1 × 10−4 mol/L.