FIGURE 2.
Colloidal gold UV–visible scanning curve. There was only one maximum absorption value at 520 nm, which is the characteristic absorbance peak for colloidal gold.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.