Table 2.
Accuracy determined by analysis of certified reference materials (Mean ± standard Deviation).
| μg/g | CTA-VTL-2 (n=20) |
CTA-VTL-2 Target |
CTA-OTL-1 (n=20) |
CTA-OTL-1 Target |
1S3 n=20 |
Previous Report24 |
INCT- OBTL-5 |
OBTL-5 Target |
INCT-PVTL- 6 (n=10) |
PVTL-6 Target |
|---|---|---|---|---|---|---|---|---|---|---|
| As | 1.044 ± 0.071 | 0.969 ± 0.072 | 0.613 ± 0.055 | 0.539 ± 0.060 | 0.314 ± 0.028 | 0.317 ± 0.041 | NR | NR | ||
| Be | 0.094 ± 0.017 | NA | 0.109 ± 0.019 | NA | 0.044 ± 0.006 | 0.039 ± 0.001 | NR | NR | ||
| Cd | 1.70 ± 0.17 | 1.52 ± 0.17 | 1.29 ± 0.15 | 1.12 ± 0.12 | 1.51 ± 0.11 | 1.51 ± 0.11 | NR | NR | ||
| Cr | 0.437 ± 0.035 | 0.429 ± 0.026 | 0.930 ± 0.102 | 0.879 ± 0.039 | 1.39 ± 0.10 | 1.30 ± 0.07 | NR | NR | ||
| Cr | 1.76 ± 0.21 | 1.87 ± 0.16 | 2.23 ± 0.45 | 2.59 ± 0.32 | 3.63 ± 0.39 | 3.75 ± 0.21 | NR | NR | ||
| Hg | 0.044 ± 0.001 | 0.048 ± 0.009 | NR | NA | 0.023 ± 0.002 | NR | 0.019±0.001 | 0.021±0.001 | 0.021±0.001 | 0.024±0.002 |
| Mn | 93.8 ± 7.3 | 79.7 ± 2.6 | 431 ± 37 | 412 ± 14 | 391 ± 21 | NR | NR | NR | ||
| Ni | 2.08 ± 0.13 | 1.98 ± 0.21 | 5.75 ± 0.55 | 6.32 ± 0.65 | 2.48 ± 0.16 | 2.73 ± 0.20 | NR | NR | ||
| Pb | 20.1 ± 2.1 | 22.1 ± 1.2 | 3.95 ± 0.38 | 4.91 ± 0.80 | 1.98 ± 0.25 | 1.91 ± 0.10 | NR | NR |
NA: Not available, NR: Not Run