Element | Concentration/ng·dm3 | ||||
Procedure A | SDa | Procedure B | SDa | ||
La | 4.7 | 0.11 | 7.4 | 3.0 | |
Ce | 3.6 | 0.10 | 4.7 | 1.0 | |
Pr | 0.8 | 0.04 | 0.9 | 0.2 | |
Nd | 3.4 | 0.15 | 7.9 | 2.9 | |
Sm | 1.7 | 0.06 | 4.1 | 1.5 | |
Eu | 0.4 | 0.02 | 0.4 | ||
Gd | 2.1 | 0.17 | 3.2 | 1.6 | |
Tb | 0.4 | 0.02 | 0.4 | ||
Dy | 2.0 | 0.04 | 2.4 | 0.5 | |
Ho | 0.5 | 0.02 | 0.5 | 0.2 | |
Er | 1.9 | 0.05 | 2.3 | 0.4 | |
Tm | 0.3 | 0.01 | 0.4 | 0.1 | |
Yb | 1.6 | 0.06 | 2.3 | 0.6 | |
Lu | 0.3 | 0.01 | 0.4 | 0.1 | |