Figure 3.
LC–MS/MS chromatograms of target analytes and internal standards spiked in: (A) blank hair; and (B) blank nail samples.
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.