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. 2018 May 17;18(5):1595. doi: 10.3390/s18051595

Figure 2.

Figure 2

Transmission electron microscope (TEM) images of (a) AuNPs with 2.0 mg/L metsulfuron-methyl; (b) AuNPs with 2.0 mg/L metsulfuron-methyl and 2.0 mg/L melamine; (c) AuNPs with 2.0 mg/L melamine, the particle size distributions images of (d) AuNPs with 2.0 mg/L metsulfuron-methyl and 2.0 mg/L melamine; and (e) AuNPs with 2.0 mg/L melamine (acetate buffer solution: 10 mM, pH 3.5, 0.2 mL).