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.
Principal component analysis (PCA) of normalized ATR-FTIR spectra of plant-based biochars. A) Score plots of PC1 and PC2, B) PC loadings against the wavenumber indicating the bands that mostly contributed to the separation of biochar groups in the PCA.
