| ? |
La2O3
3N
|
La2O3????? 3.5N
|
La2O3
4N
|
| TREO |
98.00
|
98.00
|
99.00
|
|
LaO2/TREO
|
99.90
|
99.95
|
99.99
|
|
Fe2O3
|
0.010
|
0.005
|
0.002
|
|
SiO2
|
0.040
|
0.010
|
0.005
|
|
CaO
|
0.050
|
0.030
|
0.010
|
|
SO42-
|
0.050
|
0.050
|
0.010
|
|
Cl-
|
0.050
|
0.050
|
0.010
|
|
Na2O
|
0.010
|
0.005
|
0.005
|
|
PbO
|
0.005
|
0.005
|
0.002
|
