Fig. 7.
a–d Comparison of sorption capacities towards Cu(II) (a, b), Cd (c, d) and Pb(II) (e, f) on kraft lignin before (open points) and after (solid points) modification
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.