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.
Post-column infusion chromatograms. Indicated by the arrows are the retention times of OSC t R1 = 1.88 min and OS t R2 = 3.20 min. The major drops in the XIC signal (for OS m/z 313+ → 225 and OSC m/z 285+ → 138) are due to ion suppression of eluting matrix compounds at the beginning of the gradient and due to a sudden change in solvent composition after ∼3.4 min
