Figure 4
Chromatogram of Sample 1 (reference birch bark) after hydrolysis. I.S.1: internal standard hexadecane, I.S.2 internal standard tridecanoic acid and *instrument contamination.
Figure 4 | Heritage Science
Chromatogram of Sample 1 (reference birch bark) after hydrolysis. I.S.1: internal standard hexadecane, I.S.2 internal standard tridecanoic acid and *instrument contamination.
