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.
Dependence of the peak area of the DPPH radical on its concentration measured at different wavelength. Chromatographic conditions: column—a Zorbax Eclipse XDB-C18 (4.6 × 150 mm, 5 μm), mobile phase—methanol/water (80:30, v/v), flow rate—1 mL/min. The presence of the trace content of DPPH-H (2,2-diphenyl-1-picrylhydrazine) at each measured sample is illustrated in red.
