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.
GCxGC-TOFMS chromatograms of flowback water. (A) Example from a gas well in Connelsville, PA. (B) Magnified portion of A as indicated by white rectangle. (C) Example from a gas well in Kittanning, PA. (D) Magnified portion of C as indicated by white rectangle. General compound classes are illustrated in panels. Unresolved complex mixture (UCM) concentrations are relative to each panel, but increase in concentration from cool (e.g., blue) to bright (e.g., red) color.
