Table 3.
The results of EDX analysis on the product after first leaching in a HCl solution with pH=2.0 and precipitated at pH pH 6–11 (P03_02). The products were calcinated at 1000 °C prior to measurements.
|
Alkali precipitation pH range |
|
Al−K |
P−K |
Ti−K |
Fe−L |
Zr−L |
La−L |
|---|---|---|---|---|---|---|---|
|
4–5 (P02_01) after HCL wash |
Average wt % |
0.288 |
10.13 |
0.186 |
0 |
64.127 |
25.256 |
|
wt % error |
±0.02 |
±0.186 |
±0.132 |
0 |
±1.221 |
±0.397 |
|
|
Average atomic % |
1.304 |
25.665 |
0.327 |
0 |
55.268 |
17.434 |
|
|
Atomic% error |
±0.07 |
±0.473 |
±0.233 |
|
±1.096 |
±0.247 |
|
|
6–11 (P02_02) |
Average wt % |
2.433 |
0.071 |
0.402 |
0.239 |
0.076 |
96.779 |
|
wt % error |
±0.068 |
±0.071 |
±0.148 |
±0.053 |
±0.286 |
±0.658 |
|
|
Average atomic % |
11.198 |
0.278 |
1.043 |
0.522 |
0.10.3 |
86.856 |
|
|
Atomic% error |
±0.313 |
±0.289 |
±0.383 |
±0.118 |
±0.392 |
±0.59 |