Table 4. Results for the crystals M2 and M3 (grown from arc-fusion feeds) of the chemical investigations performed by ICP-OES and µ-XRF in p.p.m. by weight.
The results of µ-XRF are shown in parentheses.
| Sample | Al | Ca | Cr | Fe | Mn | Ti | V | Zn |
|---|---|---|---|---|---|---|---|---|
| M2 (close to the seed) | 45 ± 0.9 | (198 ± 12) | 15 ± 0.07 (26 ± 1) | 36 ± 0.09 (94 ± 4) | 6 ± 0.053 (11 ± 2) | < 4.8 (3 ± 1) | 13 ± 0.42 (32 ± 1) | < 4.2 (< LOD) |
| M2 (close to the end of the crystal) | 68 ± 0.53 | (95 ± 3) | < 12.3 (5 ± 1) | 39 ± 0.16 (31 ± 0) | 4 ± 0.05 (3 ± 2) | < 4.8 (0) | < 9.3 (3 ± 0) | < 4.2 (< LOD) |
| M3 (XRF: 2–3 mm after the seed ICP-OES: 4–5 mm after the seed) | 97 ± 0.9 | (116 ± 10) | < 12.3 (9 ± 1) | 21 ± 0.45 (25 ± 2) | 3 ± 0.154 (2 ± 2) | < 4.8 (2 ± 2) | < 9.3 (4 ± 2) | < 4.2 (n.d.)† |
| M3 (15–16 mm after the seed) | – | (147 ± 26) | (8 ± 0) | (24 ± 2) | (2 ± 1) | (1 ± 1) | (5 ± 1) | (< LOD) |
| M3 (close to the end of the crystal) | 300 ± 0.8 | (138 ± 5) | <12.3 (6 ± 0) | 26 ± 0.38 (23 ± 1) | 3 ± 0.036 (1 ± 1) | 8 ± 0.07 (1 ± 1) | 11 ± 0.37 (6 ± 2) | < 4.2 (n.d.)† |
†
Not detectable due to the appearance of an interfering Bragg peak.