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. 2017 Jun 21;7:3966. doi: 10.1038/s41598-017-04359-4

Figure 7.

Figure 7

(A) UV-Vis response of the AuNPs upon the addition of Mg2+ (0.530 μmol L−1) to the solution containing a mixture of the metal ions, (B) The curve of the AuNPs absorbance intensity at 620 nm vs. urine samples spiked with Mg2+ was tested in the in the range of 0.1 to 0.45 µmol L−1, (C) The curve of the AuNPs absorbance intensity at 620 nm vs. artificial serum samples spiked with Mg2+ was tested in the range of 0.1 to 0.35 µmol L−1.