Research Article
Two New Reference Materials Based on Tobacco Leaves: Certification for over a Dozen of Toxic and Essential Elements
Table 3
Certified values for INCT-OBTL-5 (
).
(a) Major and minor elements |
| Element | Concentration (wt%) |
| Al | | Ca | | K | | Mg | | P | | S | |
|
|
(b) Trace elements (1ā1000āmg kgā1) |
| Element | Concentration (mg kgā1) |
| B | | Ba | | Bra | | Cd | | Ce | | Cu | | La | | Mn | | Nd | | Ni | | Pb | | Rb | | Sr | | V | | Zn | |
|
|
(c) Trace elements (below 1āmg kgā1) |
| Element | Concentration (ng gā1) |
| Ag | | As | | Co | | Cs | | Era | | Eu | | Hfa | | Hg | | Mo | | Sb | | Sca | | Sm | | Taa | | Tb | | Th | | Yb | |
|
|
aCertified on the basis of results by single analytical method.
|