Two New Reference Materials Based on Tobacco Leaves: Certification for over a Dozen of Toxic and Essential Elements

Table 4

Information values for INCT-OBTL-5.

Element	Concentration	Unit
Au	3.0	ng g^−1
Be	81.2	ng g^−1
Cl	0.772	wt%
Cr	6.30	mg kg^−1
Dy	184	ng g^−1
Fe	0.149	wt%
Gd	243	ng g^−1
Ho	34.5	ng g^−1
Li	19.3	mg kg^−1
Lu	16.7	ng g^−1
Na	435	mg kg^−1
Pr	321	ng g^−1
Ti	80.7	mg kg^−1
Tl	51.3	ng g^−1
Tm	13.6	ng g^−1
U	113	ng g^−1
Y	963	ng g^−1