| BCR 025-050a | LGC 6135a | LGC 6141a | NCSDC | Recoveryb(%) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Found | Certified | Found | Certified | Found | Certified | Found | Certified | ICP-OES | HR-CS AAS | ||||
 | ICP-OES | HR-CS AAS |  | ICP-OES | HR-CS AAS |  | ICP-OES | HR-CS AAS |  | ICP-OES | HR-CS AAS |  |  |  |
Cd | 340 ± 45.0 | 383 ± 76.0 | 369 ± 46.3 | - |  | - | - | - | - | 2.50 ± 0.5 | 2.40 ± 0.2 | 2.45 ± 0.3 | 97 ± 17 | 101 ± 15 |
Co | 4.00 ± 0.80 | 3.98 ± 0.80 | 4.07 ± 0.93 | 19 ± 3 | 16 ± 4 | 20 ± 4 | - | - | - | 17.1 ± 1.5 | 17.0 ± 2.0 | 16.5 ± 1.8 | 99 ± 16 | 94 ± 20 |
Cr | 448 ± 41.0 | 403 ± 34.0 | 441 ± 50.1 | 349 ± 12 | 344 ± 30 | 336 ± 28 | 120 ± 20 | 115 ± 20 | 130 ± 31 | 88 ± 5 | 105 ± 6 | 90 ± 8 | 99 ± 10 | 100 ± 11 |
Cu | 8.35 ± 1.68 | 9.62 ± 1.60 | 7.76 ± 1.68 | 100 ± 5 | 102 ± 11 | 105 ± 5 | 52.2 ± 0.8 | 52.3 ± 7.5 | 51.1 ± 13 | 54 ± 5 | 51 ± 2 | 53 ± 6 | 102 ± 14 | 105 ± 12 |
Ni | 12.0 ± 3.25 | 12.9 ± 1.80 | 12.2 ± 3.54 | 240 ± 16 | 275 ± 27 | 227 ± 13 | 50 ± 5 | 50 ± 5 | 49 ± 13 | 34 ± 6 | 30 ± 3 | 32 | 103 ± 17 | 106 ± 11 |
Pb | 1448 ± 108 | 1454 ± 188 | 1447 ± 203 | 400 ± 21 | 395 ± 10 | 391 ± 16 | 75.1 ± 12 | 74.1 ± 10 | 75.8 ± 16 | 78 ± 5 | 75 ± 5 | 79 ± 12 | 100 ± 10 | 99 ± 10 |
Zn | 55.0 ± 8.14 | 60.6 ± 11.05 | 51.8 ± 8.29 | 316 ± 18 | 339 ± 26 | 316 ± 41 | 167 ± 30 | 168 ± 30 | 169 ± 39 | 248 ± 38 | 245 ± 24 | 251 | 101 ± 14 | 105 ± 14 |