Figure 7.
¹H NMR depth profiles for Noto stone (a), Manciano stone (b), and Black limestone (c) after the application of Sepiolite, Agar CTS, and Agar Bresciani at 3% concentration for 30 min.
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.