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.
Van Krevelen diagrams from the detailed chemical characterization of bio-oil by GC × GC-FID/TOF-MS. Nonaromatic and aromatic oxygenates by group type identified in pinewood-based bio-oil (a, d), wheat straw-based bio-oil (b, e), and rapeseed cake-based bio-oil (c, f).
