Table 2 Isotopes and internal standard elements for the target elements
Element | Mass (amu) | Internal standard element |
|---|---|---|
Mg | 25 | Sc |
Al | 27 | Sc |
V | 51 | Sc |
Cr | 52 | Sc |
Mn | 55 | Sc |
Fe | 57 | Sc |
Co | 59 | Sc |
Ni | 60 | Sc |
Cu | 65 | Y |
Zn | 66 | Y |
As | 75 | Y |
Se | 78 | Y |
Rb | 85 | Y |
Sr | 88 | Y |
Mo | 95 | Y |
Cd | 111 | In |
Sn | 120 | In |
Sb | 121 | In |
Ba | 137 | In |
W | 184 | Tb |
Tl | 205 | Bi |
Pb | 208 | Bi |
U | 238 | Bi |