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. 2018 Feb 1;8(2):81. doi: 10.3390/nano8020081

Figure 7.

Figure 7

Linear correlation between Hg2+ concentrations (0, 50, 250, 500, 1000 and 1500 nM) and ΔE values in tap water samples. On the basis of the ΔE plot, the detection limit of 22.4 nM was obtained (n = 3).