Fig. 2.
Effect of extraction time (a), adsorbent mass (b), additional NaCl (c), eluent type (d), and elution volume (e) on the extraction efficiency of PAHs.
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.